[Gary Huff]

[Bouke Vahl] “But, afaik, you cannot fix 60Hz flicker on 25 FPS by setting the the shutter to 1/60.”

I absolutely can. I can fix the flicker of MacBook Pro with Retina display keyboard backlights at 23.98 by setting the shutter to 1/50-ish.

[Gary Huff]

You can copy and paste whatever you want, I’m telling you that you [i]will[/i] fail a blind test between 1/50 and 1/60 and, since you cannot tell a difference of any sort, you should always film at 1/60 regardless of whether you are shooting in 23.98 or 29.97 because you will eliminate the chance that a light source will flicker on you at 1/50 and you won’t notice that until you get into post. If you’re willing to count on luck to avoid that, great.

[Gary Huff]

[Bouke Vahl] “The flicker comes from a mismatch between framerate and light flickering.”

That’s entirely not correct. It comes from a mistmatch of the how the light is “oscillating” (for lack of a better term) and [i]shutter speed[/i]. Period.

[Gary Huff]

[Warren Eig] “This is how it’s done to emulate a180 degree shutter. 1/50 is 178 degrees. It’s as close to 180 degrees and 1/48 as you can get.”

Hey, if you’re fine with flicker, that’s great. You wouldn’t be able to differentiate 1/50 24p vs 1/60 24p in a blind test. You would fail that.

[Gary Huff]

[Warren Eig] ” In the US if you want to shoot 24p on a dslr you Shoot 1/50. Do this here in Hollywood.
“

You should really shoot 1/60, not 1/50. Less chance of flicker, especially from uncontrolled sources.

You would fail a blind test between 1/50 and 1/60.

[Gary Huff]

[Warren Eig] “I meant 1/50. “

I know you did, that’s exactly what I’m responding to. You should not shoot 1/50 in North America as a general rule.

[Gary Huff]

[Bill Davis] “Does that mean others here without advanced CS degrees also get the same?”

Having an advanced CS degree is a far cry from simply not being a “programming moron”.

[Gary Huff]

[Warren Eig] “If you are trying to shoot 24fps, make sure the shutter is 1/50.”

If you don’t have 1/48 or a 180 degree shutter, you should shoot in 1/60 in North America. You really should shoot 1/60 for 24fps anyway, the difference is negligible and 99% of everyone would fail a blind test between the two.

[Gary Huff]

[jimmy joe roche] “Does this mean that the 80d shoots at a higher bitrate than these other cameras? “

That’s exactly what it means.

[jimmy joe roche] “How does the 35mm sensor relate to this ( if at all).”

It does not relate to that at all.

[jimmy joe roche] “assuming that all these files are being compressed in ALL-I what does the bitrate correlate to? “

All of those files are not being compressed in “ALL-I”, so asking what the bitrate correlates to has no meaning.

[jimmy joe roche] ” How does the codex relate to the bitrate?”

Codec. The codec doesn’t relate to the bitrate at all. Instead, the bitrate relates to the codec.

[Gary Huff]

[Bill Davis] “I don’t know. I’m a programming moron.”

Full stop.