Originally Posted by isamu
Does anybody know the native resolution of celluloid film?
Depends strongly on film, particularly its sensitivity, camera quality, filming conditions.
Also, depends which resolution we're looking for:
1) Scanning resolution that loses no detail in the film
2) Smallest resolvable black and white feature size
3) Required pixel count for equal sharpness
The first is high, about 5K-6K, but of little value to the end user.
The second is the most meaningful definition. Great film with great lenses, on a reasonably distant scene in bright daylight, will resolve about 3.5K. Same quality hardware in a dark scene, maybe 1.5K. Good film, just over 2K in daylight and less than 1K in the night.
On the third metric, a perfect 2K digital image, drawn, rendered or downsampled from a very high-res, will generally be sharper than 35mm film. But it will also be sharper than a 3K digital sensor; it takes fewer display pixels to render an image than sensor pixels to capture it.