Re: Not understanding professional resolutions

No need to guesstimate - the Arri study at the top of the thread measures the ideal 35mm exposure on a 200 ASA stock, saying that the smallest resolvable detail is .006mm large on the negative...

Super 16mm is 12.35mm x 7.42mm or 2058 x 1237 "points"
Super 35mm is 24.92mm x 18.67 or 4153 x 3112 "points"
65mm is 52.48mm x 23.01 mm or 8746 x 3835 "points"

and Imax would be 69.95mm x 52.48mm (if the aspect ratio is 1.5 on the neg) so something like 13119 x 8746 "points".

but since the grains move around, the digital grid should be twice as fine... so 20k is an overestimate for 35mm film, but there's definitely a difference between 4K, 8K, and potentially 10K scans...

But my understanding is that digital IMAX projection is just two 2K projectors overlapping...so certainly not an equivalent to IMAX film projection...

KC

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