Help with colour calibration of negative scans

[Henry Ambrose]

There aren't any "real" color profiles for color negative film.

A particular software might refer to some setting it possesses as a "profile" but that does not mean its an ICC Profile (a real profile).

The Silverfast settings for color negative do work well, but they're still not icc color profiles.

[Tyler Boley]

Ted, perhaps we have a rhetorical disconnect here, and I don't want to belabor the point, but the presets for negative film in scanner software bear no resemblance in use, or creation, to icc profiles. Silverfast, high end scanner software, or otherwise. Scanner icc input profiles created and made for positive reflective or transparency use, and a color managed workflow, are very different animals, honest.
I don't mean to suggest neg presets they are any less useful for their intended purpose..
As a color management guy, this stuff drives me a bit nuts... sorry.
Tyler

[JonathanPerkins]

Just a quick update - tried the demo version of Silverfast Ai last night, it does what I want. The attached image is not a direct comparison between Silverfast (top) and Vuescan, but its good enough to see a significant improvement which I'm sure can only get better once I've learned how to drive Silverfast

Thanks,

Jonathan

[pherold]

Tyler,
Thank-you for your comments. People reading this thread would have gotten the wrong impression about the Silverfast profiles without your input.
-Patrick Herold

[Ted Harris]

Tyler not disagreeing at all .... not when you add icc in front of the word profile .

[Tim Lookingbill]

So when you use the negative tweaked settings and call that a profile what profile gets assigned or embedded after the scan? Are these tweaked settings applied on top of a canned Silverfast profile?

I thought scanning the neg as positive and using a custom profile for positive filem was the way to go. Then you assign the profile in Photoshop, neutralize the mask and invert or vice versa.

[Bruce Watson]

So when you use the negative tweaked settings and call that a profile ...

Stop right there. In a color managed workflow the word "profile" means ICC profile. Any other use of the term will only lead to confusion as we've already seen in this pretty short thread. So please don't call "negative tweaked settings" a profile:

Oh, that way madness lies; let me shun that. -- Shakespeare, King Lear, Act 3 scene 4.

Sorry, can't help it, it's one of my favorite plays.

[BennehBoy]

VueScan has the ability to sample the base colour of each roll of film you scan, it's a little slower than selecting a preconfigured 'film profile', but it gives quite accurate results.

I recently wrote a blog article about this here -> http://benneh.net/blog/index.php/200...-with-vuescan/

Hopefully it might be useful.