take a look on the attackment its scanned from a film not a print i also have others with the same results what have a lot more noise
what lead me to the pentax doesnt use the full sensor like a lot cameras according to others notice this for others cameras and that the video isnt supported for 4 k instead you can make 4 k timelaps
what also leaded to the question if the pentax got enough cpu power or speed to solve a 4 k video
both lead to the same problem if you take 400x400 pixels only or you crop it and take 400x400 from a picture both give bad results
the thing with the noise is also in the software codecs search for this
there are many methods what are software based to downscale downsample ect. pictures or films
but here is 1:
Datei:Interlaced Animation.gif ? Wikipedia
having more pixels means you have more information you can use
here is problem the problem when you look the power or photons coming to a sensor they look constand
but having more size allowed more pixels to read from the scene
now you have a 4000 pixel picture with noise and a 400 pixel picture with noise
when you now step back as long you dont have more noise then normal pixels the quality gets better every step
both are suffering image quality and the noise but since we do this anyway becaues we have 8268 x 6200 instead of 1920x1080 what is our target for a video the downscaleing is the winner here
i didnt understand what you mean with the second post sorry can you clear it up ? 40,96 mm is no medium format ?
or the iso what you can see even on a 200 iso picture if you step 1 time back the noise gets less
noise in that case is just the standard deviation of pixel values downscale does reduce that effect
if i can back what i wrote in the other forum i might bring it here it got deleted for a reason