Super 8mm Scan at 6464x4852 workflow

I have a quick workflow question, I've have 8mm footage scanned at 6464x4852 ProRes 4444 and was wondering an appropriate workflow is to crop in, would it be work in the timeline resolution of the scan export and resize image? or work in say a 4k timeline setting and adjust the crop.

Scanned Image:


Cropped Image:


Your help is much appreciated.

Best,
Barry

Man, I've done hundreds of hours of Super 8mm scanning, and I'm not even sure it has 2K of resolution in there. Why do it at 6K? It's a square format, so I think some variation of 2048x1556 (standard full-ap 16mm/35mm size) would be fine.

I think at best, the reversal stocks used in S8 are barely HD, mainly because the 1-perf-per-frame stabilization in the camera is so loose. I also don't think the lenses are capable of resolving anything near that kind of sharpness.

I'd concede that if you had the best-maintained Super 8 camera in the world, had great lenses, used modern Super 8mm negative, exposed it well, and scanned it on the world's greatest scanner, you might get more than 1K resolution out of it. But standard stock Super 8? No.

6K is going to tax most systems, particularly once you start running with NR, scratch-removal, dirt removal, and so on. That will be rough.

I appreciate your comment, to offer some insight I was offered the resolution, so I took it. There was no cost increase involved, I have a beefed up Mac Pro and Vega Pro Duo card. That said, im looking for a good workflow, so I guess what you are telling me I can just export this in a 4k timeline and export 1080p format.

[DavidS]

If you look at vision 3 Kodak negative stock it's down to about 10% modulation at 100 line pairs per mm in red, greens at about the same at 200 line pairs per mm.

Super 8mm is 5.79 mm wide in image area so we might just about achieve something barely visible at 2K on brand new super 8mm in red and better than that in green.

Black and white stock however is a different kettle of fish and has quite a bit extra

I can only speak about scanning stills film but it's not about the resolving power of the film but having enough scan resolution to accurately render the grain which does not look nice if it's done with insufficient resolution - look up 'grain aliasing'.

[DavidS]

It's a fair point but...

2K on S8mm would be equivalent to scanning 35mm stills film at 12.7K x 8.5K resolution or using a 107 Megapixel camera. Not sure many stills scanners are up there in terms of resolution.

doing it at 6464 would be equivalent to scanning 35mm stills film at just under 1 Gigiapixel. I've never heard of a sensor up there.

Plus an uncompressed 10 bit DPX image at that resolution for a 35mm still would be 4 Gigabytes per frame and double that if you want 16 bits!