Kodak Releases NEW Film Scanner

[Ted Striker]

Thanks for the great explanation. Another question: What is the reason scanners still use CCD's while cameras have moved over to CMOS sensors?

 

[bmattock]

Thanks for the great explanation. Another question: What is the reason scanners still use CCD's while cameras have moved over to CMOS sensors?

I can't say that I have any particular knowledge of the technical reasons, but my thoughts are that one of the virtues of CCD over CMOS is that the resulting scan is less noisy and requires less processing. Camera makers typically put a lot of time and investment into the processors in the cameras, which deal with the complexities of removing noise from signal. Scanners tend to be lower complexity, with minimal to no real computing power; they're more industrial in that sense, and a CCD works well for that, needing much less processing power.

CMOS uses less power than CCD, which makes them more suitable for a portable environment like a camera, where battery life is important, and less useful to a scanner, which is typically drawing power from local current sources.

I am told that CCD sensors also have individual lenses, and have relatively higher depth-of-field and less focus type issues; again, this favors CMOS for cameras and CCD for scanners.

Just some thoughts - I do not claim any kind of expertise here. I could well be quite wrong and welcome correction.

 

[Ted Striker]

I can't say that I have any particular knowledge of the technical reasons, but my thoughts are that one of the virtues of CCD over CMOS is that the resulting scan is less noisy and requires less processing. Camera makers typically put a lot of time and investment into the processors in the cameras, which deal with the complexities of removing noise from signal. Scanners tend to be lower complexity, with minimal to no real computing power; they're more industrial in that sense, and a CCD works well for that, needing much less processing power.

CMOS uses less power than CCD, which makes them more suitable for a portable environment like a camera, where battery life is important, and less useful to a scanner, which is typically drawing power from local current sources.

I am told that CCD sensors also have individual lenses, and have relatively higher depth-of-field and less focus type issues; again, this favors CMOS for cameras and CCD for scanners.

Just some thoughts - I do not claim any kind of expertise here. I could well be quite wrong and welcome correction.

Well, your answer sure seems logical. Thanks for the thoughts. Very helpful. Now if you could only teach me SilverFast!!! I am so bad at that software.

 

[dmr]

but the overall dark-to-light ability to capture and retain detail. An image sensor with low dmax will tend to block up dark bits and blow out light bits rather than capture the detail present in the original.

In this case, would it help to do a bracket-hdr type scan, or set of scans with the DSLR?

 

[bmattock]

In this case, would it help to do a bracket-hdr type scan, or set of scans with the DSLR?

I could imagine that this could work - with the caveat that you'd want a rock-solid base to avoid vibration, maybe even a mirrorless camera.

Just a guess on my part - I have not yet tried a single frame of DSLR scanning, I'm well behind the adoption curve on this.

 

[Ted Striker]

In this case, would it help to do a bracket-hdr type scan, or set of scans with the DSLR?

My Plustek scanner has a multi exposure mode that does two scans of a negative at different exposures in order to boost dynamic range. I'm not sure how good it works though since I am so bad at SilverFast.

 

[bmattock]

My Plustek scanner has a multi exposure mode that does two scans of a negative at different exposures in order to boost dynamic range. I'm not sure how good it works though since I am so bad at SilverFast.

Vuescan has a multi-exposure mode and I've played with it, but never seen any improvement in the resulting scans. I'm not sure if it plays with the exposure settings or not.

 

[dmr]

Vuescan has a multi-exposure mode and I've played with it, but never seen any improvement in the resulting scans. I'm not sure if it plays with the exposure settings or not.

IIAC it just re-scans at the same exposure.