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"Sigma SD1 Merrill not good for scanning negatives/slides"

Started Sep 10, 2018 | Discussions thread
FDecker Senior Member • Posts: 2,344
Re: "Sigma SD1 Merrill not good for scanning negatives/slides"

D Cox wrote:

FDecker wrote:

D Cox wrote:

Negatives have a lower contrast (...than slides) and single exposures are fine.

Isn't that the other way round? (note: I added the text in bold to give the complete context after snipping away most of the text).

Negatives have a max. DR of 12 (density 3.6) and slides are around 8 (density 2.4).

Maybe I am wrong....

Slide films are designed to have greater contrast (a steeper characteristic curve) than negatives or larger format positives. This is to counteract ambient light when they are projected.

You may be confusing contrast with density range.

https://www.kodak.com/uploadedfiles/motion/US_plugins_acrobat_en_motion_newsletters_filmEss_06_Characteristics_of_Film.pdf

Thank you for the explanation, makes sense to me. Still, even after steeping-up the contrast curve, insn't the maximum DR given by fully transparency/max. density? That means, the slide may have enhanced contrast but the negative has more DR.

Seams I have to think about it once again. As you say, it can be confusing...

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