Scarlet-W sensor or chromatic aberration issue?

[Brent G Miller Jr]

Just shot this for a documentary on ancient records - all natural lighting. Need to know if this is a RED sensor issue like the "black hole sun" issue sometimes seen with Blackmagic cameras, or a lenses issue, i.e. extreme chromatic aberration? This was shot with a Scarlet-W (standard OLPF) at 5K@24 with a 50mm Zeiss ZF lens. Since it's along the edge, it seems to me that's its CA, but I just wanted to be sure.



Thanks everyone!!!

 

[Matthew Quinn]

Looks like CA, what stop was this shot at?

 

[Sabovic Adis]

And what color space developed in?

 

[jussi rovanpera]

Can you post a still r3d?

 

[Brent G Miller Jr]

It was a quick and dirty scene so it was recorded directly to 2K Prores (Redcolor 4, Redgamma 4) and the Zeiss ZF was at F.2.8... and yes, after looking at it more today, it definitely seems to be CA.

 

[Nick Morrison]

Looks like CA

 

[jordan levy]

did it look like that while you were shooting? obviously it's way over exposed.

 

[Jan Balster]

Looks like CA and that is a classic situation for to CA show up.

 

[Jason Mavrokefalos]

If it's the Zeiss ZF 50mm 1.4 it's probably CA. This lens is notoriously bad in this aspect, although at 2.8 one would expect it to be a bit more subtle.

As others noted this is a difficult scene, if you check the lower left part of the flame which has less contrast due to the oil lamp in the background being better exposed thanks to the flame, there is almost no CA.

p.s. Focusing is a big part of it, if you focused closer to the flame instead of the fingers, I believe CA wouldn't be so exaggerated.

 

[Brent G Miller Jr]

All good points about it being CA and I totally agree. Just never had a shot with it looking this bad before, but this was indeed a difficult scene. Probabaly should have added additional room light and not had the flame in such focus. At the time though I wasn't thinking about CA issues so I didn't notice in until post. Amateur mistake. Thanks everyone!

 

[Stacey Spears]

Looks like a DC2/RC4 issue. Try using RC3 or Dragon Color and see if it goes away. Could also be CA.

 

[Dean Butler]

I have that lens. Pretty much don't use it at 1.4 unless I absolutely have to due to softness and CA. Usually from f2.0 it's pretty sweet though. If I've had problems at 2.8 they've been very subtle and I haven't noticed. Does look like CA though... (I'm on Scarlet MX though)

 

[Stacey Spears]

Also, if you plan to shoot ProRes only, I would recommend that you capture using RedLogFilm or Log3G12 instead of Redgamma so that you capture more dynamic range. Assuming you plan to grade later.