On Sun, 11 Jun 2006, Gunlaug Sørtun wrote:
You've learned the wrong lesson, I think :-)
Georg,
Not surprising as this is far from how I make my living.
It is *not* a function of color-depth, but the transparent bit/layer in
an 8 bit png, or ordinary gif, that is understood and handled correctly
- even by IE.
When I compare your transformation with my original .png, 'identify' shows
only a difference in file size (8k original, 3k transformed), while the GIMP
tells me the original's display type is RGB color and the transformed's
display type is indexed color (16 bits). Is that what makes the transparent
bit binary rather than graded?
A jpg has no transparency, so it will cover up the background just like
before.
I find this unclear: by covering the background, do you mean that the jpg
will display as a filled rectangle on IE rather than as an ellipse?
This is what you can do with 8 bit pngs with a single transparent
bit/layer...
<http://www.gunlaug.no/contents/wd_additions_05.html>
...and that's usually good enough for comfort - even in IE.
Very interesting and visually appealing.
Most of my graphics work over the years involved correcting brightness and
contrast on digital photographs taken as part of project work. Satellite
imagery I manipulate with other software. So I'm far from an expert on
anything graphical (including design); I learned decades ago that's not where
I have much in the way of skills.
Thanks,
Rich
--
Richard B. Shepard, Ph.D. | The Environmental Permitting
Applied Ecosystem Services, Inc.(TM) | Accelerator
<http://www.appl-ecosys.com> Voice: 503-667-4517 Fax: 503-667-8863
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