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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

a bit disappointed with the 4K coming from the Scarlet

Les Dittert said:
Correct, I removed the optical low pass filter and replaced it with an IR Filter.
You will get a lot of aliasing with this method using ordinary postprocessing so be prepared for that.
The optical low pass filter is designed for a certain pixel spacing on the sensor and not the resolution of the picture coming out of the camera. Its purpose is to spread the light just a very small amount To avoid aliasing problems. Red chose a filter that guarantees absolutely no aliasing for motion picture use. They selected on the conservative side for aliasing reasons.
I am prepared to do the trade off and postprocess using some special techniques to get rid of most, if not all of the aliasing.
Click to expand...

Any chance for a tutorial (from replacing the OPLF with a IR, to your aliasing-removal)? I'm very interested.
 
Michel Rabe said:
The OLPF is designed to perform best for 5K motion (probably with downsample to 4K in mind). That's 60% more pixel to tame compared to 4K. Would it be a 4K sensor, the OLPF would definately be lighter than how the actual OLPF performs now when sensor is windowed to 4K.

Chris, thanks, yes probably IR/UV inside OLPF. I might take it off and do some tests.
Click to expand...

Michael,

1K, 2K, 3K, 4K, 4.5K, 5K, it does not matter as long as you are windowing/cropping the sensor to achieve the change in resolution and frame size. Also, a 5K sensor requires a weaker OLPF, not a stronger one, than does a 4K sensor of the same size.
 
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