Digital camera Raw to capture colour-negative

SilverFast DCPro (digital camera)

Pixeldetail
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Digital camera Raw to capture colour-negative

Postby Pixeldetail » Sun Sep 16, 2007 3:28 pm

Hallo,

I wish I could use a plugin to convert captured (with digital camera) 6x6 cm and larger colour negatives to a positive photograph. With a faster workflow than our Microtek Artixscan.

Present trials have been with Canon ef 50mm macro lens.
White balance set to artificial light.
Even light coming from a Durst Colour enlarger without filter use.
Raw file.
Corverting in Photoshop cs2 Raw into 16 bit Photoshop file.
And an Photoshop Plugin from CF systems

Sometimes it come close, but often it is not usefull.

Any better system with your products, or am I just adding something to your TODO messages and wishlist??

thanks,

Pixeldetail
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RAG
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Postby RAG » Tue Sep 18, 2007 9:15 pm

Hallo Pixeldetail,

Am I understanding you correctly, you are using a Durst Color Enlarger to illuminate 6x6 cm and larger color negatives and are then using a Canon camera with a 50mm macro lens to capture the images, is this correct?

If this is correct, aren't you able to use the same photo management/editing software that you use for any other images you capture with your Canon camera?
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Pixeldetail
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Re: Digital camera Raw to capture colour-negative

Postby Pixeldetail » Fri May 29, 2009 12:21 pm

The raw conversion in Photoshop cs2 and now I bought CS4 Extended; is not able to convert the orange mask to a perfect positive image. Your knowledge with this could be valuable to create a piece of software which does ther job.

Maybe helpful is the startingpoint from the universal DNG files.

Did I overlook such an app from your prent site?

regards,

Pixeldetail
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LSI_Ketelhohn
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Re: Digital camera Raw to capture colour-negative

Postby LSI_Ketelhohn » Wed Jun 03, 2009 8:14 am

Dear Pixeldetail,

have you tried our SilverFast DCpro or HDR demo?
As long as a NegaFix profile is available the conversion should work right away.
If no Profile is present these versions offer the possibility to create your own profiles from a similar film profile.

kind regards
Arne Ketelhohn

tsaf001
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Re: Digital camera Raw to capture colour-negative

Postby tsaf001 » Thu Dec 23, 2010 4:40 am

This is a complex issue, on camera accessories, I recommend that you use all of the above

heinzk
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Re: Digital camera Raw to capture colour-negative

Postby heinzk » Mon Dec 12, 2011 7:56 pm

I am using a similar method to capture negatives.
I use a Besler Slide Duplicator + Canon + 80mm enlarger lens
virtually your setup only upside down.

I have found that the best way to neutralize the orange cast of any film base is to shoot a series of images changing the C-M-Y filter settings on your color head, while using a software such as Lightroom or Photoshop which has an eydropper measuring tool for RGB

While measuring through the film edge (unexposed film) adjust your C-M-Y setting until you get a reading on your eydropper sampler that has R-G-B values in balance ie close to the same number each.
This basically "neutralizes" the orange film base cast and allows fine tuning the color space with enough blue headroom (blue - orange) complement.

You must go through this process of "neutralizing" the orange cast for each film type you have. Basically you are creating a film profile for various manufacturers and different film types within a given manufacturer because each of them will have a slightly different orange cast for the film base.

I then use Adobe Camera Raw to reverse/contrast/color tweak the image. But Silverfast Negfix can also be used.

Hope this helps
Heinz


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