GH4 Preference? Cinema 4k vs Consumer 4K

A

alexmeadeint

Member
One is the cinema standard with a 17:9 aspect and the other scales scales to 1080p for better post work.

Now that we have both options in the GH4 what's everyone's preference?

If your stuff is going to be screened in a theater then distributed online would DCI be the best bet?
Seems Vimeo handles both aspect ratios but 4K TVs haven't been using the DCI standard.
 
Personally if I'm going to shoot 4K I'm going to use the DCI version and crop later if needed. Otherwise I'll just shoot in 1080p.
 
I plan to use C4K exclusively for a couple reasons.

1. it is slightly less CROPPED than the UHDTV size

2. somehwere I ran across a video where some guy CLAIMED the C4K is closer to senor pixel size, thus, finer detail. I have not seen this anywhere else but the potential theory is sound. I have yet to test this myself, but will be printing sharpness charts tomorrow for more testing.

And I plan to Aspect to 2.40:1 anyway
 
It's only less cropped on the width - the height is the same (C4K is a wider frame than UHD)

Both formats are pixel to pixel so there is no difference in sharpness/detail - C4K just adds pixel to the sides.

If you plan to output at 2.40:1 - yeah I'd go with C4K, you'll be throwing away slightly less pixels.

I just wish we had a choice of frame rates instead of being locked into 24fps (25fps would solve some flicker issues here)
 
I do see on the LCD the image size changes tween C4k and 4k norm... does that mean it is BAYERing different pixels, maybe? Or is that just displayed different in the LCD?
 
On our RED the 4x1080 mode (what you guys are mistakenly calling "consumer mode") was always the sharpest when downrezzed to 1080.
 
And still I'd shoot 4096, and crop horizontally in post: it's basically free (no downside other than HD space), and you can solve any minor mistakes you make.

Does it record 4096 internally, or only 3840?
 
Emanuel said:
It does internally and internacionally ; ) It is a cinema camera, Samuel :-)
Click to expand...
Cool, thanks.
For some reasons I thought it could only record 3840 internally, and 4096 had to be recorded externally. No idea how my brain got there.
 
Any changed thought on this choice? I'm wondering especially when mixing with std HD ftg. Also, when shooting edge critical material, choosing cinema might cause (out of) framing issues once converted. Unless the monitor can overlay UHD frame outline. Yes..can be manipulated, to fix..but maybe better to just shoot the UHD for better frame matching and no surprises.
 
I'm shooting my first "real" (wink wink) production in UHD at 30p so I can render it to 60p in the end way easier, and playback on more gear. I couldn't upload 4096 to YOUTUBE in a test. :( I still prefer C4K for the extra pixels and less crop, and will do that in the future at 24p.
Probably for simplest compatibility UHD is the way to go.
I hope to go Digital Cinema Package in the future so I still push for C4k.
 
It's mostly a test bracing for the future frame rates. I'm one of those weirdos that LOVES higher frame rates, and although double 30 isn't REALLY 60p, it does make smoother looking video to the eye. It still has shutter smear like normal movies, but less flicker.
 
Rowy said:
I just wish we had a choice of frame rates instead of being locked into 24fps (25fps would solve some flicker issues here)
Click to expand...

Doesn't changing you shutter angle to 172.8* (or shutter speed to 1/50th) solve most flicker issues? 30% of my work happens in countries with 50 Hz Mains Frequency so I'm genuinely curious.

I occasionally get burnt by flicker from some of the most evil LEDs but rarely by other sources. Wish the GH4 had a built-in waveform monitor as it seems the quickest & most accurate tool for spotting flicker, especially if it's not global & only in accent lights.

On a side note I recently shot stills with the electronic shutter & in one series I got a bit of scrolling bands from commercial LED lighting. Luckily it was easy to spot in playback.
 
wwjd said:
It's mostly a test bracing for the future frame rates. I'm one of those weirdos that LOVES higher frame rates, and although double 30 isn't REALLY 60p, it does make smoother looking video to the eye. It still has shutter smear like normal movies, but less flicker.
Click to expand...
+1 I'm in the exact same boat. I shoot every thing in UHD 30p. I really dislike 24p but that's another discussion altogether. Sorry to digress :)

Cheers,
Pete
 
You must log in or register to reply here.
Back
Top