u/oliyann

Those who use a Speedbooster (mine is viltrox) on their p4k, are you getting that bloomy glow effect from highlights in the background (esp sky) and from other light sources?

Is it because of the fact that the glass in Speedbooster scattering the light before it reaches the sensor?

Will it not happen if I use native m43 lenses?

I use a Sigma 24-70mm f/2.8 with my viltrox Speedbooster. But when I mount the same lens in any other camera, I don't see the glow effect.

Using ND (0.9 and 1.2) reduces this, at the cost of reducing the entire exposure of the scene. Is there any other way to reduce this glowy effect without affecting the overall exposure?

I know this is a weird ask. I've been shooting with p4k for years and for almost all projects I tend to play around with CSTs and LUTs (I don't follow a standard grading recipe for all the shoots that I do with p4k).

And this has got complex over the time because it's hard for me to maintain colour consistency across all clips with non native CSTs.

I shoot at 12:1 BRAW, with "film dynamic range".

I want to exactly replicate the colors/exposure that I see at the back of my camera monitor (the default one). And I want to start my grading on that. What will be the correct CST node for that? (I can't use managed colour spaces in resolve settings because I work with multiple cameras like FX3, A7 IV in my timeline)

Also another quick question: What's the purpose of the LUTS menu in p4k? Will it be baked in the output? Since I'm shooting braw - I don't think that the LUTS are applied? Or how do I effectively use that for my use case?