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Weekly Chatter:Win XP Service Pack 2
Monday September 13, 2004
by Imaging Revue Experts and Staff

Each and every week, Imaging Revue offers non-members a tantalizing taste of the information available in our forums. Make sure to check out the entire list.

Unsharp Mask Demystified
Thursday September 9, 2004
by Ellen Anon

"Ask any number of digital photographers the settings they use in Photoshop’s Unsharp Mask filter (USM) to sharpen their images and that’s the number of different responses you are likely to get. Because of this a significant number of people turn to plug-ins to do their sharpening for them. However once you understand the basic principles involved in using the USM it is fairly easy to make it work predictably and effectively."

Weekly Chatter:External hard drive recommends
Tuesday September 7, 2004
by Imaging Revue Experts and Staff

Each and every week, Imaging Revue offers non-members a tantalizing taste of the information available in our forums. Make sure to check out the entire list.

ImagePrint 6 Notes
Thursday September 2, 2004
by Mitch Alland

I am pleased to see that the new ImagePrint manual for v6 is a great improvement over earlier versions and is, in fact, excellent. The extensive Troubleshooting Guide section is a good addition. Also, as program installation has been simplified, I believe that most questions on IP problems that come up on online forums can now be answered by suggesting, in the best Unix tradition, that the user "look it up in the manual...." These notes are based on ImagePrint 6 build 1.08. If you are using a later build some of the issues and glitches discussed below may have been fixed, as ColorByte is aware of all of them.

Weekly Chatter:Canon i9900 Profile
Monday August 30, 2004
by Imaging Revue Experts and Staff

Each and every week, Imaging Revue offers non-members a tantalizing taste of the information available in our forums. Make sure to check out the entire list.

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Business Issues > Burning Issues and Expert Opinions > Restoration: blotchy prints

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AuthorSubject: Restoration: blotchy prints   [Go to Bottom of Page]
Steve Fisk
Posted on Sat Oct 18, 2003 6:31 PM

I am working on several old photos that are very blotchy in appearance. It's not half-tone moire or dust. Under magnification the emulsion is deteriorated and the entire print is covered with irregular light and dark blotchy areas. It's not obvious whether it is some sort of fungus/mold, or whether it is due to moisure and/or just deterioration over time.

One of the prints (a standing portrait) is also very faded so the detail in dark areas (the man's trousers) is largely lost, and the light background area is just a mass of dappled blotchy areas.

I have applied a Levels Adjustment Layer and also a Channel Mixer Layer. That has overcome quite a bit of the loss of detail due to fading, but I am still faced with cleaning up the blotchy areas. Trying to do the cleanup with the Clone and Healing tools would be a major undertaking and would also probably smudge a lot of clothing detail and make the image look artificial.

The blotches are too big to deal with via a Gaussian Blur filter. I also tried the Float & Move procedure on the background. That helped a little but did not really eliminate the problem. Virtually every part of the image is affected, including the man's face and hands, his clothing, nearby props, and the background.

I see this occasionally in old photos. Is there any way to deal with this sort of thing effectively and quickly yet still maintain reasonable image detail? I could sure use some help on this.

Katrin, any thoughts?


... this thread contains expert advice from Katrin Eismann.




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