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A modern 35mm film scanner for home

(www.soke.engineering)
251 points QiuChuck | 1 comments | 11 Nov 25 19:48 UTC | HN request time: 0.001s | source
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gtm1260 ◴[11 Nov 25 21:21 UTC] No.45893048[source]▶
The fact that there is still no sample scans has me heated - instead of showing us all these specs, how about some sample images!!
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anonymousiam ◴[12 Nov 25 00:15 UTC] No.45894734[source]▶
It doesn't seem to exist yet. The specifications are not specifications, they are design goals. I don't see how they can get the color coverage they're claiming with RGB LEDs.

Seems about as credible as a lot of the crowdfunded stuff.

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atomicthumbs ◴[12 Nov 25 01:43 UTC] No.45895442[source]▶
The Coolscans used RGB LEDs.
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ChrisMarshallNY ◴[12 Nov 25 02:27 UTC] No.45895730[source]▶
Can confirm. I used to write software for them.

The issue with LEDs, is very pure colors. That’s actually a bit of a problem, with film scanners. You need a smooth curve, and it needs to extend out a bit. You don’t want areas of color being missed.

The Coolscans had a light color response (think the “levels” screen, in Photoshop) that looked like three steep hills, with minimal overlap, but they were able to make them wider than a “pure” LED. Coherence is a feature of LED lighting.

Most previous light sources used filters over a white light, and they looked “sloppier,” with a lot more overlap, so there was more coverage. We had to correct for the unusual color coverage of LEDs.

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1. kamranjon ◴[12 Nov 25 04:51 UTC] No.45896478[source]▶
One of the things that the Coolscan did well from a hardware perspective was that it made the transport sprocketless which allowed damaged film to be easily scanned, and it also allowed non-standard formats to be scanned easily as well. I’m curious if they have a sprocket driven system for this or if it utilizes a similar system as the Coolscan - I’ve used many scanners and the Coolscan is still the best/most convenient because of being able to just sequentially scan an entire roll of negatives.