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batch resize csr and irfan query

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shawn

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Mar 14, 2010, 5:25:17 PM3/14/10
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Hi folks.

I had a pc running WINDOWS 7. Photoshop CS3. Set up a batch resize to
1024*680 and had a file size around 120kb which I was happy to upload to
Flickr. Then I sold the pc and brought a laptop. Transferred CS3 to the
laptop and set up the same batch routine, but my file sizes now are aroundf
550kb!!! So I tried to batch resize using Irfanview and I get file sizes
of around 550kb. Whats going on? I need images around 120kb but I don't
want them looking tiny on the screen thats why I want them at 1024*680.
Please help. Thanks.

Ofnuts

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Mar 14, 2010, 5:41:54 PM3/14/10
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Final file size is a function of both pixel count and compression ratio
(aka "quality"). I suspect you also need to tune this.

--
Bertrand

shawn

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Mar 14, 2010, 6:38:53 PM3/14/10
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"Ofnuts" <o.f.n...@la.poste.net> wrote in message
news:4b9d5821$0$10477$426a...@news.free.fr...


Cheers. It worked. I wish I knew why I had not thought of that. It was
staring me right at me!

Chris Malcolm

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Mar 15, 2010, 6:28:44 AM3/15/10
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It's also a function on how much apparent fine detail is in the
image. Softly focused low ISO images will compress a lot smaller than
sharply focused ones with high detail. Very noisy high ISO images will
give you the largest jpeg file sizes.

--
Chris Malcolm

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