Odyssey Luts for Low light

S

Scim

Member
Hey all, I recently took the plunge and now own a 7q+ to go with my FS700. I think I have most things figured out, but I still have some questions about low light. I shoot almost entirely in college basketball gyms and ice rinks, so am normally stretching the iso to 2000, 1/250th and iso 3.2-3.5. In these situations, I value low light over DR, and have never had a problem with the standard profile. With Iso locked at 2000, I'm not sure if I can overexpose by 1-2 stops in these situations to use slog2. ITU709 plain appears to be a good option?

Per an old article on the CD website, "The standard ITU709 (REC709) signal is not currently supported as Convergent Design considers the signal made available by the ITU709(800%) to be superior and capturing the greater range of the camera’s abilities." If I'm not mistaken it is now.

I'm sure it's been discussed before but in my couple hours of research I'm still a bit lost. Of course I'll do some test shots before my first shoot with it, just wanted a starting point and to clear up some questions about itu709 vs itu709 800% in use with 2017 firmware.

Thanks!
Shawn
 
Dear Shawn,

Is this a well lit basketball court?

Since you do not need wide dynamic range, you can shoot in Rec. 709 800% and record in the Odyssey in Apple ProRes 422.

Rec. 709 800% just extends the highlights, without changing the shadow details and mid-range.

Do you need to shoot at 1/250th shutter? Are you attempting to obtain clean stills from the motion footage?

Please feel free to call me.

Seven One Nine --- Nine Three Zero --- One Three Seven Six

Respectfully,


Dan Keaton
Convergent Design
 
yeah, S Log 2 isn't ideal for low light, low DR scenes.

REC709 800 would be fine.
 
Luckily the court is fairly well lit, I am trying to do high frame rates (up to 240) and keep a higher shutter for 2k prores slow motion.

Does 709 800% need to be exposed any differently than a standard profile? It still looks rather flat with the extended highlights, which is fine as I'll be doing grading, just wondering if a monitoring Lut is reccomended when shooting 709 800% as is slog2.

Thank you very much for your great service, and if a phone call works better for you I can certainly call.

Shawn

Edit: Just did some tests and the shadows are rather noisy (color noise) with 709 800% with a normal histogram. Slog 2 looks great in the shadows but I don't have enough light for it so the entire image is dark.
 
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