April 6, 2014

NAB 2014: Sony Officially Announces 4K A7s Camera, as Well as Firmware Version 4.0 for F5 & F55

a7sWe've been anxiously waiting for Sony's press conference today from NAB, since word is they'll officially announce their brand new 4K camera. Well -- no more waiting. Introducing Sony's A7s, which boasts ultra-high sensitivity up to ISO 409,600, high color fidelity, 4K HDMI video output, and 120fps/720p recording. Not only that, but Sony has also released the details about what firmware version 4.0 has to offer F5 and F55 users.

The A7s

Well, there was much speculation, but the "s" in A7s stands for "sensitivity", a kind that is unparalleled at this level. The full-frame, palm sized camera boasts many exciting features that will not only be desirable for low-budget filmmakers, but professional-level shooters and photographers as well. Here's a list of a few key features of the A7s:

  • Wide ISO sensitivity setting from 50 to 409600 and unprecedented dynamic range
  • World’s first full-frame sensor capable of full pixel read-out without pixel binning process for movie and 4K (QFHD: 3840 x 2160) HDMI video output
  • Professional video functions including XAVC S Full HD recording at 50Mbps, time code and optional XLR audio inputs
  • High ISO sensitivity range allows faster shutter speeds during low light shooting
  • α Mount System compatible with a wide range of high quality lenses, including power zoom lens ideal for movie shooting
  • Improved Fast Intelligent AF performance in light as low as EV-4
  • Ultra compact, light-weight body for comfortable pro-style operation

Sony A7s

Den Lennie of F-Stop Academy was asked by Sony to shoot some test footage with the A7s, and though we can't embed them here, you can check out the videos on his blog.

F5 & F55 Updates

Sony made several significant announcements during their press conference at NAB, one of which was particularly exciting. Sony has announced firmware version 4.0 for their F5 and F55 cameras, which includes picture cache recording and user-generated LUT support, but what's really exciting is the introduction of the ENG-style/documentary docking unit, which will allow users more mobility when shooting out in the field.

Sony reports that these upgrades were made and decided upon with user feedback in mind. They've announced that users will now be able to upgrade their F5 cameras to an F55. Not only that, but they're also offering users an optional hardware upgrade that will add 3rd party codecs, including Apple ProRes and Avid DNxHD.

Stay tuned for more big announcements from NAB.

Link: Sony A7s

[via DP Review]

Your Comment

75 Comments

[ https://www.youtube.com/watch?v=dEA_8A9TBGM#t=87 ] pretty video but the camera is nailed to a spot.

April 6, 2014 at 6:36PM, Edited September 4, 11:56AM

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DLD

So it does not record 4K internally, correct?

April 6, 2014 at 6:40PM, Edited September 4, 11:56AM

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Brian

No it only does 4k external and Renee forgot the most important spec from her copy and paste article.

This camera is only 8bit internal and externally which us a deal breaker , the only hope it had was 120fps and its only 720

Unless this camera is under 1,200 then it will stay on shelves , nice try Sony

April 7, 2014 at 6:12AM, Edited September 4, 11:56AM

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jaye

April 7, 2014 at 9:21AM, Edited September 4, 11:56AM

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Don

Well, they fucked up. Very good 1080P camera, inferior 4K camera.

No internal 4K.
Only 4K with external recorder and then just 8-bit 4:2:2.

Also, this is 2014, so 50 Mbit/sec is not really that hot anymore...

April 6, 2014 at 6:41PM, Edited September 4, 11:56AM

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Juhan-i

I must agree with you Juhan.
If it doesn't come in at a low price point (which I doubt)
the low light capabilities would have to be absolutely out of this world.

April 6, 2014 at 6:46PM, Edited September 4, 11:56AM

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Den Lennie's BTS just got posted, in which he notes that the only way they could record 4k was to haul around an AC power generator running a Blackmagic external recorder. Brilliant, Sony...

http://www.fstopacademy.com/blog/sony-alpha-7s-first-hands-on-shooting-r...

April 6, 2014 at 6:58PM, Edited September 4, 11:56AM

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I think they could have also used a HDMI-to-SDI converter and then anything that takes SDI. Or they could have had a beta version of something that's about to be announced.
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Anyway - only 8-bit out. It looks like an intentionally crippled product that is designed to protect their future FS 700 replacement or something based on Alpha 99.
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specs - http://www.sony.net/Products/di/en-us/translation_img/products/vq5f/over...

April 6, 2014 at 7:04PM, Edited September 4, 11:56AM

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DLD

Probably because there isn't a dedicated 4k recorder on the market yet. I'm sure there will be one soon.

The Blackmagic isn't meant for portability, it's just the only option right now.

April 6, 2014 at 7:12PM, Edited September 4, 11:56AM

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Sam

"this combination at under $5K is the most compelling video solution on the market today. Like the Samurai and Ninja Blade, Shogun allows the recording of pristine, 422 10-bit images straight from the camera sensor captured using 4K/HD ProRes, Uncompressed RAW Cinema DNG or Avid DNxHD codecs"

www.cinema5d.com/news/?p=24676

April 6, 2014 at 8:28PM, Edited September 4, 11:56AM

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So, Johnny says it's 10-bit HDMI out. Or is it 8-bits in a 10-bit wrapper? Does this help in grading or not?
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PS. If, as he says, Shogun is priced around $2,000 (kind of like Q7) and the combo runs $5,000, then A7s is ~ $3,000. Internal 4K @ 100Mbps on GH4 is still $1,699.

April 6, 2014 at 8:44PM, Edited September 4, 11:56AM

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DLD

8-bit in a 10-bit wrapper

but still: even with internal 8-bit recording and slog2, I see no banding anywhere

it looks like a winner to me
probably my next camera

April 7, 2014 at 5:01AM, Edited September 4, 11:56AM

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any word on the af system used? would be nice if it is on par with the a6000 ... such wow. much want

April 6, 2014 at 6:44PM, Edited September 4, 11:56AM

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Whispers

April 6, 2014 at 6:45PM, Edited September 4, 11:56AM

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Juhan-i

T_T Thank you

April 6, 2014 at 6:54PM, Edited September 4, 11:56AM

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Whispers

April 6, 2014 at 6:52PM, Edited September 4, 11:56AM

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Juhan-i

Oh look, its a Sony C300

April 6, 2014 at 6:49PM, Edited September 4, 11:56AM

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Joey Mama

and a second rate one at that

April 6, 2014 at 6:56PM, Edited September 4, 11:56AM

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Joey Mama

It's more of a C100 with external 8-bit 4K, but keep in mind: for under $2000!!!

April 7, 2014 at 5:03AM, Edited September 4, 11:56AM

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No internal 4K, no fast auto focus to match their own A6000 or GH4.
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Have to wait for the 4K HDMI recorders now. I assume a bunch of them will be released or announced in the next few days. A7s will serve its purposes though... depending on its price.

April 6, 2014 at 6:55PM, Edited September 4, 11:56AM

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DLD

Well, put high quality compact fixed 50mm Sony / Zeiss lens there and you have rich mans ultimate compact "street photography" tool there.

If it is any merit, this new Sony will probably produce one of the best still images ever, considering the size of the complete camera+lens package.

April 6, 2014 at 7:02PM, Edited September 4, 11:56AM

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Juhan-i

I wouldn't dismiss it (once again, depending on the price). 8-bit or not, the picture is pretty gorgeous. One may have to shoot it with a baked-in look without further grading though, whereas GH4 is far more flexible in this regard. Quad HD does make it more of a consumer toy but I am sure someone will rig something to make it a pro cam. C500 is also 8-bit but it's found its way into the hands of some top pros.

April 6, 2014 at 7:11PM, Edited September 4, 11:56AM

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DLD

Also not mentioned in article , no high iso for external 4k or 1080p only high iso for crappy internal 8 bit compressed video

April 7, 2014 at 6:14AM, Edited September 4, 11:56AM

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jaye

April 6, 2014 at 6:57PM, Edited September 4, 11:56AM

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Interesting (mistake ? or "lets hope Sony did not intentionally crippled the final version" ... ):

http://www.fstopacademy.com/blog/sony-alpha-7s-first-hands-on-shooting-r...

"It does 4K too…

We flew to Japan last week for 5 days to shoot the 4k film. The sensor reads out fully at 4k and via micro HDMI you can record 10 bit uncompressed to a 4k recorder. We used the Blackmagic Design Ultra studio Pro that records Ultra HD. Unfortunately this is only AC powered and so we had to confine our shooting locations to being able to plug into a generator or mains."

April 6, 2014 at 7:09PM, Edited September 4, 11:56AM

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Juhan-i

Ya, the spec sheet says 8-bit HDMI out. Could it be upgraded via firmware to 10-bit at some point? It's possible, I guess.

April 6, 2014 at 7:15PM, Edited September 4, 11:56AM

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DLD

205meg - 3840x2160 download link to sample footage

https://app.box.com/s/oku7qva6jvsu6a2x8vox

looks damn good and I am sure the original is better - all for $1699?

Well done Sony

April 6, 2014 at 7:14PM, Edited September 4, 11:56AM

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Zeiss Fan

If it's priced at under $2,000 (A7 is $1,699 and A7r is $2,299), as some are speculating, it'll still be popular. A full shooting rig will run around $4K, I reckon.

April 6, 2014 at 7:27PM, Edited September 4, 11:56AM

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DLD

i hope someone announces a 4k external recorder through hdmi/mini...at a price of 1500...then i WOULD pick this boy...
bt there is also KINEFINITY i wil luv to see what footage they wil bring from KINEMAX...HAHA..frm the specs,tht one is a bad boy wit an option of ALEXA lik ISO setting or the canon lik ISO setting...you choose which fits you liking ...can't wait kinemax6k

April 6, 2014 at 8:03PM, Edited September 4, 11:56AM

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mathenge

if only gh4 had S-Log2 and better iso

April 6, 2014 at 8:04PM, Edited September 4, 11:56AM

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sebastian roland

GH4 has Cine D&V features, which give you a flat picture profile and, of course, there's no way an MFT sensor gives you the same DR and ISO as a full frame sensor.
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That said, both are crippled products. GH4 should have had the internal 4K recording @ 200 Mbps (it does record 1080p at that rate) but Panasonic obviously decided to market the $2,000 upgrade with its YAGH attachment. Sony A7s should have had at least 4K instead of Quad HD, 100 Mbps internal 4K recording (it has 1080p at 50 Mbps) and a 10-bit clean HDMI out. Allowing for the extra set of features, GH4 then could have been priced at $1,999 and A7s at $2,299. The corporate decision to spare its higher tier products from cannibalization however doesn't account for other manufacturers honing onto the same price point. If Sony's protecting its future FS700 replacement, then it received a nice jolt today from AJA, which announced a fully capable 4K pro camera for $9,000. Canon and Nikon must also be readying their products for an expected release.

April 6, 2014 at 8:37PM, Edited September 4, 11:56AM

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DLD

NAB 2014-4K Combination from
ATOMOS and SONY..
Atomos 7” Shogun external recorder, records throught HDMI...great solution for sony A7s and the Panasonic GH4K...for under 2k...

April 6, 2014 at 8:42PM, Edited September 4, 11:56AM

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mathenge

Just to get away from the shallow A7S discussion: that F5 upgrade is fantastic. Sony are really going at Canon and Alexa with those F cameras. Unbelievable flexibility for the price.

Re the A7S: love this idea - recording 4K internally in that size body? Concentrate on the image quality - let someone else record it. Putting S Log 2 in it makes it almost a no-brainer as a B/C cam for me. And if you think Atomos are going to be the only small 4K recorder in the game you're mad. They better get that Shogun shipping QUICK.

April 6, 2014 at 8:53PM, Edited September 4, 11:56AM

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marklondon

Send the techno-dripfeeders at Sony a strong message by avoiding yet another piece of under specified crap. No internal 4k...WTF? Buy a $2000 external add-on just to record 4k? At 8 bits? Give me a fucking break!

At least Panasonic are making an effort with the GH4. Sony (and Canon) on the other hand must really consider low end/DSLR customers as idiots...

April 6, 2014 at 9:11PM, Edited September 4, 11:56AM

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SonySkeptik

Someone need a Kit Kat?

April 7, 2014 at 2:17PM, Edited September 4, 11:56AM

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Bill

While I am already pre-sold on the GH4, this Sony A7S might be interesting for dynamic-range and low-light work.

I'll wait to see how the 1080p image compares to the GH4, especially when checking for rolling-shutter issues.

April 6, 2014 at 9:19PM, Edited September 4, 11:56AM

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Guy McLoughlin

You're kidding, right? GH4 1080p bitrate is 200mbps; this thing tops out at 50mbps...

April 6, 2014 at 9:28PM, Edited September 4, 11:56AM

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SonySkeptik

You do understand Sony's use of xavc right?

April 7, 2014 at 3:40AM, Edited September 4, 11:56AM

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Greg P.

I absolutely hate when companies promo cameras with videos that are shot entirely on sticks. Give me real-world application demos !!!! GRRRR.

April 6, 2014 at 10:14PM, Edited September 4, 11:56AM

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Pat

Not only on sticks, the camera itself is motionless - no panning or tilting. Furthermore, there are no fast moving objects going through the shot. Now, compare it with their newest AX 100 camera. It also looks great while shooting stationary objects. Otherwise, it has horrific rolling shutter effects.

April 7, 2014 at 1:13AM, Edited September 4, 11:56AM

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DLD

I agree with the majority of the comments, it should be internal but still, nice to have options

April 7, 2014 at 1:12AM, Edited September 4, 11:56AM

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Stephen Herron

The footage is absolutely breathtaking, much better than the one coming from the GH4. Very curious of the pricing.

April 7, 2014 at 1:43AM, Edited September 4, 11:56AM

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Álex Montoya

[ https://www.youtube.com/watch?v=ysNc3OVFJ6s ]
This is the most recent GH4 footage. Watching it in 1440p, especially the sunset shots at the end, and it looks fabulous. The question remains whether the above footage is 100 Mbps internal or via the mini-HDMI to an external piece. There's no info here. I believe the earlier clips were with the YAGH unit and into AJA Ki Pro in 4-2-2 10-bit via the 3G-SDI cables.
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PS. I hope that the presence of A7s nudges Panasonic into upping the internal 4K recording to 200 Mbps. I believe their previous excuse was the unavailability of the fast enough media.

April 7, 2014 at 2:30AM, Edited September 4, 11:56AM

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DLD

Watching it with my 2,5K monitor, still like the Sony footage a lot more. WIth the Sony there's more DR and more resolution. The GH4 video has been sharpened a lot, where in the Sony footage it feels like real, organic detail.

April 7, 2014 at 4:30AM, Edited September 4, 11:56AM

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Álex Montoya

Sony also issued a new update for the FS700 codenamed 'Tumbleweed'.

April 7, 2014 at 1:46AM, Edited September 4, 11:56AM

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Having done extensive grading on FS700 S-Log footage at 120fps in the internal 28MBps AVCHD codec, I'm not the least bit worried about topping out at 50MBps XAVC S. Sure, more is always nice, but I've done great work with less, especially considering how thinly 28MBps gets stretched at 120fps.

For my money, S-Log is the standout feature here. If the camera handles moire and aliasing and rolling shutter as well as the FS700 as opposed to Sony's other still cameras, this will be a great budget camera for plenty of applications. Since it is a still camera, I'll wait until they are in the wild, but given the need for a camera like this to make some compromises, I'm happy with the ones Sony has chosen to make.

April 7, 2014 at 2:53AM, Edited September 4, 11:56AM

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Will

Words of wisdom.
I don't want bit depth, bitrate, or resolution. I want a nice image, and the A7s has that.

April 8, 2014 at 10:06AM, Edited September 4, 11:56AM

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I'm likewise unconcerned about the lack of internal 4k. If you need 4k and can't afford at least a recorder (but really, a camera better suited to the task of recording 4k) then you're probably doing something wrong. I've never had a client demand 4k, and when I've shot 4k or more, it was with a true cinema camera. To say nothing of the fact that films like Gravity, Prisoners, and Nebraska seem to do just fine shooting digitally in less than 4k resolution. It's nice to have and fine to want, but if you're using a camera like this, your money is better spent on lenses, proper support, and proper crew than on pixels that won't be seen by, in all likelihood, anyone but you, your editor, and your colorist.

April 7, 2014 at 3:32AM, Edited September 4, 11:56AM

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Will

Only once have I found myself wishing I had shot in 4K: I was stabilizing a shot and the end result was soft, then I had to scale another one to add some VFX and it was soft too.
For regular stuff, sharp and clean 1080p is all I need.

April 8, 2014 at 10:10AM, Edited September 4, 11:56AM

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http://www.eoshd.com/content/12458/panasonic-gh4-gets-arri-film-look
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From Andrew Reid at EOSHD :
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"4K from the Panasonic GH4 grades amazingly well. Normally I like to use Film Convert to give quick ‘looks’ to my footage. I much prefer this to twiddling with colour wheels all day in Resolve. However there’s no profile for GH4 material yet, so it requires some special sauce to get it to work properly. The key is to find the non-GH4 camera profile that gives you proper colour saturation, proper colour temperature and doesn’t crush the blacks or burn the highlights too much. It turns out that camera profile is the Arri Alexa in Rec.709!"
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There are Vimeo clips included in the article. I think the Kodak Film look is superb with GH4. On the positive side, Andrew seemed to be able to grade 4:2:0 8-bit without much problem, artifacts and all. Maybe A7s's 8-bit 4:2:2 will hold up as well.

April 7, 2014 at 4:27AM, Edited September 4, 11:56AM

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DLD

Wow, IMO the footage from the article doesn't do any favor to the GH4.

April 7, 2014 at 4:33AM, Edited September 4, 11:56AM

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Álex Montoya

99.2% agree (the car and the ferris wheel were fine).

April 7, 2014 at 9:32AM, Edited September 4, 11:56AM

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Brian

I have to agree, he really trashed a lot of that footage,

April 7, 2014 at 10:44AM, Edited September 4, 11:56AM

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Brian

Like I said, given the stationary, motionless shots, A7s will come out ahead with its bigger sensor and the DR. But, given how the promotional A7s and AX 100 footage has been handled, gives me an inkling that A7s will break up when either in motion or shooting moving subjects. As to the above shots, the Porsche and the boat shots were fine with me. Now, as the streaming media moves into the next stage of 30-50 Mbps - or even further up, into the 100 Mbps range, since the technology for that improvement already exists - one might see significant difference between the low priced GH4 and the higher prices Red Dragon, F65 and their replacements. At the present, with the shooters aware of their camera's limitations, the footage is very pleasing to the eye.
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@Richard - S-Log2 is supposed to give similar DR to F65, or ~ 14 stops. GH4 reps say theirs is at 11 "conservatively". A lot depends on the power of the processor inside the respective bodies. GH4 is a physically bigger unit that can record up to 200 Mbps internally. Sony can only record at 50, with its reps citing danger of the the heat build-up from a more powerful processor. What difference that will make under the actual shooting conditions is yet to be determined. I suspect it might have blurring problems with motion. We'll see.

April 7, 2014 at 11:23AM, Edited September 4, 11:56AM

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DLD

I bet we'll see Canon releasing cameras that are obsolete before they hit the showroom floor as well. 4K with 8-bit video is garbage. I'd still rather have a hacked 5D MKIII with 1280p RAW @ 23.976 fps.

April 7, 2014 at 9:19AM, Edited September 4, 11:56AM

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Harry Pray IV

Any more information/details on the "unprecedented dynamic range?" Are we looking at possibly higher DR than say...the Red Dragon?

April 7, 2014 at 10:50AM, Edited September 4, 11:56AM

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No way.
From Sony's rethoric ("1300% of REC709"), it should be the same as in the F5 and F55. Which is A LOT. But not like the Dragon.

April 8, 2014 at 10:12AM, Edited September 4, 11:56AM

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It's funny how people dismiss 8bit 4:2:2 as useless nowadays, it seems like most readers of this blog are employed in Hollywood... it's even funnier that many "professionals" compare different recording formats solely in terms of higher bit-rate numbers... the higher the better, like megapixels, yeah whatever...
Anybody happy about the option to (truly )use it as an APS-C as much as a full-frame camera?

April 7, 2014 at 11:33AM, Edited September 4, 11:56AM

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demetris

Not just happy to have the APS-C option, I'd be happy with a cheaper APS-C version of the camera. Super35 covers my needs well and gives me access to a wider variety of lenses in the long run.

For me, this would be an inexpensive way to deliver highly gradable, high quality HD footage on the cheap. Comments about the lack of internal 4k (and especially the complaint that it is quadHD Instead of cinema 4k, as if that makes the slightest difference) really seem misplaced to me. Yes, it would be great to have cinema-ready 4k in any camera, but it's so rarely necessary or useful it seems odd to complain about when a.) it can be added on so cheaply and b.) the features that are in the camera (s-log and 50mbps xavc s) are so useful on every project one might use this camera on.

It seems like the metrics-focused world of still cameras, thankfully mostly dead now, has really taken hold in the motion picture world, I'm guessing from people who don't exactly do this for a living but aspire to. While a higher number (resolution, bitrate, dynamic range metric) is always better, people seem to fret an awful lot about differences that in the real world make no difference. Yes, you can do more with 4k than 2k; yes, you can grade 100mbps footage more heavily than 50mbps (though in the case of this camera and the gh4, I think some folks don't know how much more efficient xavc's 50mbps are than the gh4's 100 or 200, narrowing that difference significantly), and yes, you'd always rather have 14 stops of dr than 13.5... But in the real world, these differences aren't going to be terribly noticeable. The sensor size of the a7s (and I'm no great champion of ff sensors) is going to make way more of a difference than the gh4's bitrate, and on all but cinema-bound projects, 4k is going to be a waste of hard drive space.

April 7, 2014 at 1:14PM, Edited September 4, 11:56AM

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Will

Personally I would rather see a super35 sensor that FF, don't know of too may cine primes that have an image circle covering FF but they all cover super35.

Somehow I am getting the impression this camera was a 'knee jerk' reaction to the release of the GH4 which came shortly after the A7R, and left Sony floundering without a 4K camera to compete, or am I becoming too cynical in my old age! The lack of internal 4K recording I find disappointing, to qualify.. I shoot mainly underwater doco so adding an external recorder to an underwater housing is no easy exercise, plus for even 'dry' doco production, traveling light is essential unless you have a BBC Nature budget.

Cinemas are a long way off screening 4K but shooting doco in 4K is future proofing, particularly when there are organisations like NetFlix which are now streaming 4K, which is why I am once again going down the upgrade path. And having a compact, multipurpose 4K system which I can use all my Nikon glass on is very attractive, let alone shaving 15kgs off the weight of the current system's underwater housing!

Is this camera a 'stop gap' measure to tease, so people have second thoughts about the GH4?... Possibly
Are we going to see an firmware upgrade to allow 4K internal recording? .... Dreaming... yet it could be quite possible.
Is it simply a means for Sony to read consumer sentiments before the next half baked model? ... I actually like Sony and own 5 different Sony cameras and the specialist ones are well thought out from day one like the HXR-MC1

I just wish they would release a 'complete' camera which didn't have to be replaced every 6 months!

April 8, 2014 at 7:00AM, Edited September 4, 11:56AM

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H-Mungus

I think it all looks pretty good for a cheap camera. 4K from a Fullframe sensor !!! Awesome. And the footage online looks good. Seems to have great DR and nice High Light rollof. Looks very organic and natural to me.
But how the hell are we going to connect the Atomos Shogun to it with that very very tiny Micro HDMI connection ?????? That shout for a solution like the GH4 brick !!

April 7, 2014 at 1:02PM, Edited September 4, 11:56AM

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All this talk of the Shogun, but look at the Ninja Star with this: $300 more for ProRes HD with S-Log makes this a real competitor to many bigger cameras, provided the moire, aliasing, and rolling shutter is as well controlled as Sony had shown with their motion picture, as opposed to still, cameras.

Who needs 4k? HD ProRes with S-Log at this cost with this sensor could really make for an amazing combination of features at a ridiculously low price.

I just hope the motion rendering is what Sony CAN do, instead of what they have done with their still cameras in the past.

Looking at the image control variables on this camera (inherited from the F5, not the last still camera) I'm hopeful that they've gotten this right. What a great combination of tools this could be!

April 7, 2014 at 3:15PM, Edited September 4, 11:56AM

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Will

Does the "full-frame sensor capable of full pixel read-out without pixel binning process" means that aliasing and moire is avoided?

April 7, 2014 at 3:44PM, Edited September 4, 11:56AM

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Carvo

The idea, at any rate, is that the sensor feeds the processor full pixel reads, and the final image is generated from those reads. So, it seems, the 4k is true pixel, and the HD is a processor-generated down convert of the 4k image. In theory this should fix moire and aliasing difficulties to a large degree; whether it does or not remains to be seen. As for rolling shutter, this process will have little effect on that phenomenon, and the sensor itself (and more importantly it's read times) will dictate that result. We can only wait to see because, as many have noted, the test footage offers little indication one way or another what the rolling shutter characteristics are (but the avoidance of shots where that could be measured might indicate a poor result).

I'm hopeful, but cautiously so. I want this to be a usable camera, because the other features are really great.

April 7, 2014 at 4:00PM, Edited September 4, 11:56AM

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Will

April 8, 2014 at 7:53AM, Edited September 4, 11:56AM

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Gene

Subjective

April 9, 2014 at 8:20AM, Edited September 4, 11:56AM

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Stephen

Wow, A7s is what I have been waiting for - been wanting a full frame for stills as well as 4K video. Thinking now of cancelling my GH4 order even though I already have all the glass for it. Was that official Sony video with 4K images captured on an external 4K recorder? Does one even exists already? The low light footage looks so clean and without aliasing/moiré! Just wondering how the lower megapixel stills will stack up to other full frame cameras?

April 8, 2014 at 11:43PM, Edited September 4, 11:56AM

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The 4K video with the sakuras was recorded with and external recorder... that needs to be plugged to a mains outlet. You want the new Atomos Shogun instead.

April 9, 2014 at 9:28AM, Edited September 4, 11:56AM

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Anyone know if A7s is internal and 4.2.2 or is it 4.2.0? 8 or 10 bit internal?

No one is discussing rolling shutter or IR pollution (as all sony cameras suffer from it). My take on Rolling shutter since readout is faster it will be diminished.

Also is the internal 50mbs variable or constant? If so motion is sure to affect the final recorded image

April 9, 2014 at 12:32PM, Edited September 4, 11:56AM

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DMW

I don't have a 4K monitor yet but on my 40" Sony HD TV it looks fantastic. I can not wait to see how it does with camera movement on rolling shutter, jello cam ect ect. If it does well on those issues this could be my next camera, especially if a canon EF adapter lets me use the glass I already own.

April 9, 2014 at 11:07PM, Edited September 4, 11:56AM

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Gary

The A7s internal recording is 8 bit 2.2.0. micro-HDMI port with 4:2:2 8-bit 4K or 1080 video output. I wish the HDMI were 10 bit but 8 bit is what I read. Also of interest:
"The α7S camera is also equipped with S-Log2 gamma. Common to Sony's range of professional video cameras, S-Log2 expands the dynamic range by up to 1300% to minimize clipped highlights and loss of detail in shadows. Additionally, for the first time ever in a Sony α camera, the α7S adopts the workflow-friendly XAVC S recording format in addition to AVCHD and MP4 codecs. XAVC S format allows for full HD recording at a data rate of 50 mbps with lower compression for improved video quality."

April 10, 2014 at 2:39AM, Edited September 4, 11:56AM

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Thanks Samuel for news about Atomos Shogun external recorder. The specs and features are fantastic!

April 10, 2014 at 2:42AM, Edited September 4, 11:56AM

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side of your story. I was surprised you are not more popular since you surely have the gift.

June 19, 2014 at 11:29AM, Edited September 4, 11:56AM

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IMHO this shooter missed the point. He shot this under what looks to me like un-challenging, overcast skies. Probably shot this for his demo reel. Or was paid by Sony Japan to shoot pretty pictures for them...

Is this quality unknown with other small cameras currently available, under the same light?

I'd like to see just how well it does in clear, bright skies. Or at least in early morning or late afternoon which, by the way, I feel would have made the whole clip would look better anyway...

This particular test does not induce me to buy.

June 20, 2014 at 12:09PM, Edited September 4, 11:56AM

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wsmith

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August 24, 2014 at 7:13PM, Edited September 4, 11:56AM

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