January 23, 2015 at 4:36AM

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A short GH4 test in the beautiful Hawaii!

Here is a short test of the GH4 I did in Hawaii a few months ago. Shot with a nikon 70-200 with a Metabones speedboster. Did not grade properly, only tweaked a few curves. This test is aimed to show how the GH4 performs in a "real" documentary shoot. Used profile is the EOS HD profile 1. Music courtesy to: On Tour. You could find them on FMA.
Here is the link: https://www.youtube.com/watch?v=skDGbFcDEAI
Some brief thoughts on the image: Though it is sharp, it feels too sharp straight out of the camera without profile tweaking. Turing the sharpness down really saves the image and makes it more "Filmic". The colours are fine, though not really accurate. The codec is surprisingly robust in post!
What do you guys think?

4 Comments

What were your camera settings ?

Did you use ND filters for the daylight shots ?

...Some of your shots are really nice, but other shots look "flat" with what looks like the kind of "hazy" details you can get from stopping your lens down too much ( closing down more than f/8.0 ) so that lens diffraction makes things mushy.

As for color, it all depends on camera settings. You have to either take a reading off a neutral color target, or set the color temp using a degrees Kelvin setting. Also be careful when using the CineD profile, as you can mess up color by setting the contrast lower than zero, or by using the hilight and shadow controls. ( CineD requires most imaging settings to be set to zero and automatic imaging controls turned off )

Digital color converters like FilmConvert are also very handy in eliminating the "video" look from your footage.

January 23, 2015 at 10:05AM

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Guy McLoughlin
Video Producer
31326

As I said, I did not grade the footage properly. Not LUTs or Resolve work. I aimed to show what the camera interprets straight out of the camera. I used the Cine V with some minor adjustments, my profile is the EOS HD 1 profile. I did not use a ND which is the cause of some problems. Thanks for your feedback!

January 26, 2015 at 12:08AM

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George Du
Student, Filmmaker
244

>>>I aimed to show what the camera interprets straight out of the camera.

Which means you have to be ready to keep changing your settings to match your shooting environment. I use four profiles when I shoot with my GH4, and consciously select the profile that best matches what I'm trying to shoot.

From high-contrast to low-contrast, the profiles I use are...

CineV ( camera contrast set to -5 ) : High contrast profile for low-contrast subjects

Standard ( camera contrast set to -5 ) : Medium contrast profile for medium contrast subjects

Natural ( camera contrast set to -5 ) : Medium contrast profile for medium-contrast subjects

CineD ( camera contrast set to 0 ) : Low contrast profile for high-contrast subjects

...I also carry a neutral color target with me to set color temperature when I shoot.

Lastolite EZYBalance Collapsible 18% Grey/White Balance 20 Inch Disc : $40
http://www.bhphotovideo.com/c/product/375202-REG/Lastolite_LL_LR2050_EZY...

January 31, 2015 at 10:55AM

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Guy McLoughlin
Video Producer
31326

>>> I use four profiles when I shoot with my GH4, and consciously select the profile that best matches what I'm trying to shoot.

...I forgot to mention why I use four different profiles with the GH4, so here's a few thoughts.

The GH4 internally records in 8-bit 4:2:0 color space, which does not give you much room to manipulate your image in post. The GH4 image is largely "baked-in" when you shoot. If you shoot everything with just one camera profile your recorded images will be great under certain contrast/lighting conditions, but terrible under different conditions. For example: shooting under bright sunlight with the CineD profile, and then shooting under flat overcast lighting with the same CineD profile. The sunlight footage will look great, but the overcast footage will be flat as can be and difficult to fix in post without creating other problems in your image.

So to make up for this GH4 limitation you can adjust your camera settings while shooting to compensate for the contrast range of your subject and end up with footage that is a lot easier to work with in post.

Things might be different once Panasonic release their V-log feature for the GH4, as you might be able to make a lot more corrections in post and still have an image that holds up well. ( I am hoping that V-log comes out before NAB this year )

February 2, 2015 at 5:29PM

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Guy McLoughlin
Video Producer
31326

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