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07-10-2009, 06:46 AM   #16
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Slide film dynamic range, not so great.

QuoteOriginally posted by Cosmo Quote
Checking the DXO site, it says all MF sensors give greater dynamic range than anyAPS-C sensor.
Just to be clear, it's due to the size of the individual photo site area, not the size of the sensor itself. Larger photo sites capture more photons, more photons = more potential dynamic range. Generally speaking, a larger total sensor area is going to have larger individual photo sites but not necessarily. Pixel density is really what matters.

Slide film has a much greater dynamic range then digital, though not all scanners can suck all the detail out of the highlights and shadows.
I think you might be confusing the optical density range of the film emulsion itself vs. it's ability to capture the dynamic range of a scene. Actually slide/transparency film has one of the SMALLEST dynamic ranges, several stops less than either color negative film or most digital cameras (DSLRs or better). The film itself has a wide *optical density range* (> 3.0 normally) which is why it's difficult to capture on a CCD scanner, but the film's ability to capture a scene with a wide dynamic range or contrast ratio is really pretty limited compared to digital.

Terry Wyse

Last edited by tlwyse; 07-10-2009 at 09:46 AM. Reason: grammar, spelling

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