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gh4 and shogun color issue

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Rick D'Elia
gh4 and shogun color issue
on Jul 22, 2016 at 10:39:01 pm

We have been pairing our GH4 with an Atomos Shogun a lot lately, recording directly to the Shogun. The other day we noticed that the color we were seeing in the GH4 was not what was recorded/displayed on the shogun.

We were shooting in CINE-D and it was relatively flat (for the gh4) but what was being record to the Shogun was pretty crunched down. We double check to make sure no lut was being applied in the shogun. We ripped a few clips to the gh4 directly and through the shogun to compare.



Our AC sat in for a quick test. Not the greatest clips but you can clearly see a more baked in look in the Shogun.

We sent the Shogun out for possible repair, but their people found in there tests it was fine. And we did too, when we got it back. We ran it with an A7Sii and there was no difference between the two clips.

Clearly, something was up with our GH4s. I've been searching the web and forums to see if anyone else had experienced this. But nothing similar turned up.

We began troubleshooting. Resetting the cameras and testing along the way. Still finding a major difference between the the two clips. One thing we tried that seemed to have helped was switching the luminance level from 0-255 to 16-235. There is a subtle difference, but only on keen scrutinizing.

Not sure how this may affect other parts of the recording or what kind of issues this will cause in post. Some forums say that matching footage with two different luminance levels isn't hard, others said it causes major and time taking problems.

Oddly in this struggle to figure out the color discrepancy, we saw that that the image in the shogun also rotates by a degree (so it isn't exactly level), and punches in slightly as well (and only on the gh4, it didn't do that with the A7S but on both our gh4s.

Curious if anyone else have experienced any these or have some insights on fixes.


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