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scanning film with sd quattro

Started Mar 11, 2017 | Questions thread
MOD Kendall Helmstetter Gelner Forum Pro • Posts: 20,587
Re: scanning film with sd quattro

Artemka wrote:

<...>

My question towards the technically minded people here:

1. How big would be the advantage of replacing the Fuji X-E1 with Sigma SD (H) Quattro?

It would be higher resolution for sure, but if you are already stitching I don't know how much that would matter... I would think the colors would be better, especially if you profile the camera.

2. How big is the importance of a quality macro optic. Sigma SA is surprisingly hard to find over here (in Europe), so I've narrowed my choices to Sigma 105/2.8 APO or something like Nikkor 55mm/2.8 AIS with adapters (Nikon F->M42, M42->SA).

That would be pretty important but there should be a range of macros that would work.  The 70mm is quite good, the 105mm as you noted is good.  Maybe even the 50mm macro would work?  Not sure if that's too wide.

3. Inverting negatives requires a linear raw file which can be inverted before gamma is applied. Is there any way to get a raw linear file from a Sigma? No option in SPP as far as I know. Since I am interested in Luminocity only, there might be third party converters that can do a decent job?

You can get the data from a program called RawDigger.  But I'm not sure how usable the raw data would be for you, even in monochrome - since it's three layers how would you invert it, or use it once inverted?  You could possibly just use the top layer but it might be kind of noisy, that would be the main danger I could see.

 Kendall Helmstetter Gelner's gear list:Kendall Helmstetter Gelner's gear list
Sigma 70-200mm F2.8 EX DG OS HSM Sigma 8-16mm F4.5-5.6 DC HSM Sigma 24-70mm F2.8 EX DG HSM Sigma 50-500mm F4.5-6.3 DG OS HSM Sigma 85mm F1.4 EX DG HSM +4 more
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