[filmscanners] RE: Thumbnails looking flat

["Alex Zabrovsky" <alexz@zoran.co.il>]

This is correct approach indeed. I follow this rule as well.
I built already (and continue actually to do it) some image archive where
the images are stored in their final condition thus after sharpening.
The web gallery utilizes the images from this archive thereby eliminating
the need for additional sharpening (as I think).
Perhaps the better approach would be using fresh scanned images duplicating
image for archive-targeted editing (smallest Unsharp Mask amount if needed)
and web processing sharpening the original image more.
Unfortunately, the second approach is impossible for the images from current
archive (have no spare several weeks to rescan this stock), however, the
next scan run waiting for me (around 400-500 slides) will be subject for
this approach.

Regards,
Alex Z

-----Original Message-----
From: filmscanners_owner@halftone.co.uk
[mailto:filmscanners_owner@halftone.co.uk]On Behalf Of Henk de Jong
Sent: Thursday, September 19, 2002 2:19 PM
To: alexz@zoran.co.il
Subject: [filmscanners] Re: Thumbnails looking flat


> In fact I apply unsharp mask routinely after scanning (not for all the
> images though - only these needed), so I do not do it again for images
> prepared for web (thumbnails and 800x600).
Rule of thumb is that sharpening should only be applied as the last step in
image processing.

> Do you think it is necessary to increase the amount of Unsharp Mask as
> the image is getting smaller ?
I never use sharpening within VueScan or afterwards on the output file.
I always use sharpening only as the last step after resizing and before
saving the image.


> I suspect probably there might be something inherent into Save for Web
> processing of the images to reduce the sizes further downgrading the
> quality in some way.
> I'll try regular resize and Save instead to see the difference.
Better try an Unsharp Mask as the last step before saving the image :-)

With kind regards,
Henk de Jong







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