S-log for shooting RAW - affects the raw file?

So I learned that using S-log in camera will provide better video footage that preserves as much dynamic range as possible. I thought I’d apply it so that my jpg preview on the camera gives me a better idea what the raw file will look like.

I used to believe no matter what setting you put your camera in, it only affects the JPG preview. Well it looks like this one affected the raw file as well? I’d like to know what on earth happened here :frowning:




The images are shot with the same exposure/aperture/iso setting seconds apart with only the s-log setting changing; the lighter ones have it disabled, the darker enabled. Here are the links to the raw files and the pp3

1
1pp3
2
2pp3
3
3pp3
4
4pp3

Update:
Did some more experimenting and turns out that once you set it to s-log the mix ISO becomes 800. I am however experiending something weird when shooting two consecutive images with same settings at ISO 800. It seems to save the raw file shot with s-log with a different gamma somehow baked into it. Can I change that in RT settings?


A
App3
B
Bpp3

In every system I’ve ever used, the jpeg effects the metering your camera does. For stuff like picture profiles or film simulations, etc etc, that change in metering is relatively small.

For S-log, I assume you’re just getting a massive underexposure.

two images shot at ISO800, 1/1600 and same aperture, should provide the same raw file regardless of s-log or not. right? at least that’s what I’d think.

See also Sony picture profile affects raw

Basically, this changes the base sensitivity (ISO) of the camera.

2 Likes

So basically useless as a more accurate depiction of the raw data. Oh well I was hoping :stuck_out_tongue: