Comments on: Revolutionary Metabones Speed Booster Makes Your Lenses Wider, Brighter, and Sharper

By: kicap

kicap — Tue, 29 Jan 2013 16:47:33 +0000

I am confused. Would it be beneficial to use this Speed Booster on the BMCC EF Mount. Just to eliminate the extreme crop factor purpose?

By: Scepticist

Scepticist — Sat, 19 Jan 2013 23:45:12 +0000

Here are some numbers from an online DOF-Calculator:

http://www.dofmaster.com/dofjs.html

We see that indeed the DOF remains about the same (there is some difference, because the APS-C crop factor is about 1.54, which is a bit more than the inverse focal reduction factor (1 / 0.71 = 1.41), but only, if combined with the smaller sensor.

Canon 5D – FF-Sensor 36×24 mm, Crop-Factor 1

FF-Sensor, aspect ratio 3:2
50mm
f-stop = 2
Dist = 10 m
DOF = 5.06 m

FF-Sensor
35 mm
f-stop = 1.4
Dist = 10 m
DOF = 7.84 m

Sony NEX-5 – APS-C-Format 23.4 x 15.6 mm Senso, Crop-Factor 1.54

APS-C Sensor, aspect ratio 3:2
35 mm
f-stop = 1.4
Dist = 10 m
DOF 4.86 m

By: Hampus

Hampus — Fri, 18 Jan 2013 21:47:05 +0000

of course, I’m getting on for my GH2 and pre-ordered BMCC whenever the hell that will be, haha. But for those who wait… :)

By: Heiko

Heiko — Thu, 17 Jan 2013 23:05:45 +0000

There will always be whiners – but you have to admit until now the weird sensor size of the BMCC was a real concern for many people, not just whiners.
And I don’t mean because the sensor is “too small”, I mean because it is very non-standard so you can’t use 16mm or 2/3″ lenses, but the next best standard sensor size (4/3) is also quite a bit larger and so there are no real wide angle lenses for the BMCC.

With this adapter, this will not be an issue anymore. The people still whining will continue doing so because they just like being miserable! ;)

By: Heiko

Heiko — Thu, 17 Jan 2013 22:57:55 +0000

Hmmm, if this works on a Black Magic Camera, it just made the whole camera look a lot better to me. My major concern was the weird sensor size of the BMCC and that are hardly any wide angle lenses for it. With this kind of adapter, all these problems could be solved.

When I first read the headline, I thought it must be a joke, how can an adapter make a lens sharper and faster – everyone knows adapters always take away sharpness and light. But then they tell you how it works and it actually makes sense! :)

By: mike

mike — Thu, 17 Jan 2013 03:01:19 +0000

Canon is a crap company that only cripples their products. The 5d “revolution” was a mistake and they need to lower prices on their cameras. Only thing that keeps people stuck with them is that they have invested so much money in EF glass.

By: Luke

Luke — Wed, 16 Jan 2013 15:26:01 +0000

You can’t use this for an ef lens onto an ef mount. It has to be from a lens with a large flange distance to a mount with a small flange distance.

By: Johan Malmsten

Johan Malmsten — Wed, 16 Jan 2013 11:37:19 +0000

Sooooooo… can they make it anamorphic while they’re at it? :)

By: shayne

shayne — Wed, 16 Jan 2013 05:39:21 +0000

What a great product and killer price for a product that does multiple things. I just wish there was a Nikon version. Or maybe a Nikon to Canon adapter would do the trick?

By: Marcus

Marcus — Wed, 16 Jan 2013 03:24:03 +0000

Not sure I understand Quobetah’s response.

By: Quobetah

Quobetah — Wed, 16 Jan 2013 00:58:45 +0000

No. RED should make a mount with the focal reducer built in. Otherwise, you cant put it on top of an ef mount.

By: Rob

Rob — Wed, 16 Jan 2013 00:07:57 +0000

Canon should come out with a camera that that can use this adapter. In other words a camera with a Sony-like mount/flange distance, so with this Booster their Canon lenses can be used on a Canon camera and take advatage of this phenomenon.

By: Marcus

Marcus — Tue, 15 Jan 2013 22:51:15 +0000

Does this mean that you can use these on RED products if you have an EF mount for your Epic?

By: Luke

Luke — Tue, 15 Jan 2013 15:22:58 +0000

That would have the same effect as a macro tube, and prevent focus to infinity (alongside making the FOV wider and adding a stop, of course).

By: Hampus

Hampus — Tue, 15 Jan 2013 14:48:51 +0000

revenge of the “shit” :P

By: Hampus

Hampus — Tue, 15 Jan 2013 14:47:17 +0000

All the whine? Now people will complain that the sensor is only s35-ish xD

By: Ed David

Ed David — Tue, 15 Jan 2013 14:43:28 +0000

With the Micro 4/3 BMC – this is huge. Awesome work, Internet!

By: Marco Boerner

Marco Boerner — Tue, 15 Jan 2013 12:51:37 +0000

Hmm, are you sure? Like can’t you use a good EF lens, that usually covers a full frame sensor, on a lower end Canon DSLR that has a smaller sensor? Even though it won’t have the same effect it would be an improvement of the lens after all.

By: Raphael Wood

Raphael Wood — Tue, 15 Jan 2013 12:46:51 +0000

“And this is how Full Frame dies, with thunderous applause.”

Kudos to anyone who gets the reference.

By: BornCorrect

BornCorrect — Tue, 15 Jan 2013 12:44:49 +0000

Phillip Bloom recommends adding it to you Canon DSLR to improve the speed of the lens. EF to EF mount funny no scientific evidence just speculation.