Vuescan question about TIFF compression (and hopefully my last one for awhile)

[Roger Covalt]

In Vuescan, under the files tab, is there any disadvantage to saving
the file as TIFF using the TIFF compression option, or would it be
better to save all my scans without using this compression option?
What is the best format to save your scanned slides in Vuescan?

Just another humble question

Thanks

Roger C. Covalt
iwear...@bigfoot.com

"I am not over-fond of resisting temptation." William Beckford

[Charlie]

Roger,

the tiff compression used in Vuescan is LZW compression, and as such,
non-lossy. I tired it and decided the increased loading time was not
worth the modest space saving, so I keep compression turned off. But
if the loading time for a compressed image isn't a problem for you....

--
Charlie Hoffpauir
http://freepages.genealogy.rootsweb.com/~charlieh/
(Note: all messages from hotmail or yahoo accounts will be delayed in
delivery because I filter them due to heavy SPAM from these ISPs.)

[Mac McDougald]

In article <3a6ce5b4...@News.CIS.DFN.DE>, iwear...@bigfoot.com
says...

> In Vuescan, under the files tab, is there any disadvantage to saving
> the file as TIFF using the TIFF compression option, or would it be
> better to save all my scans without using this compression option?
> What is the best format to save your scanned slides in Vuescan?

The TIFF compression method is LZW, which compresses the files to various
degrees, depending on the nature of the pixels (more of the same color in
an image and smaller the file, etc.) Same option when saving a TIFF in
PhotoShop. Unlike JPEG at whatever resolution, LZW is NOT lossy in any
way.
The only possible drawbacks are:
1. The file tends to open slower in imaging programs
2. Some imaging programs *used to* not be able to open LZW compressed
Tiffs, but I haven't kept up, maybe most all of them do now.

Asssuming you always want the best original rendition of a scan for
archiving, TIFF a great choice. I NEVER "start" with a JPEG.

--
Mac
www.doogle.com