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Old Jul 15, 2003, 6:09 AM   #1
Fly
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Default JPG-compression fine / super-fine any difference?

Hi

I've tryed experimenting a bit in jpg-compression on my A70.
I can't see any difference in picture quality
I've compared pictures taken with a tripod, zooming in and out in Photoshop, unable to decide which one was the best picture!

Any similar experiences?
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Old Jul 15, 2003, 1:47 PM   #2
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Fly, I use a Canon G2 and like you, saw little loss of resolution in the various resolutions, until I began shooting in RAW format. What a difference. RAW formats are used as are negatives. I keep the RAW format shots in a separate file, and edit, convert to .jpg, resize, etc., before saving them to other files for printing or just viewing.
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Old Jul 15, 2003, 7:10 PM   #3
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I agree with Janet. RAW files are a little larger than JPGs, but they let you modify some of the parameters like sharpness, white balance and saturation during the conversion process.

I use BreezeBrowser to do the conversion.
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Old Jul 15, 2003, 7:16 PM   #4
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I use Paint Shop Pro. Keep meaning to take a look at Photoshop because so many folk use it, but I'm very satisfied with PSP.
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Old Jul 30, 2003, 5:43 AM   #5
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Default There ARE a difference !!!

Hi again!

Now I see the difference!

I've made a new test, to see if there is any difference between the compression-levels on the A70.

Here are my pictures: http://www.geocities.com/flynge/compression.html

Judge for yourself.

IMO the "normal" compression is only to be used in rare occations. The "fine" is allmost as good as "superfine". But there ARE difference. Espacially visible at the LEGO-box pictures.

Cheers!
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Old Jul 30, 2003, 11:14 AM   #6
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If there is a difference in quality between superfine and fine, I really can't tell untill my effective monitor size is over three feet wide. I would rather be able to store twice as many images in "fine".
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Old Jul 31, 2003, 3:52 AM   #7
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OK Streets!

I use "Fine" too allmost all the time.

I had to go to 300% to see the difference between Fine and Superfine!!!

On vacations I use Fine to be able to get more pictures

BTW: The pictures are allso available at:
http://www.pbase.com/lynge/a70_compression

(Som problems with geocities traffic-limits).

Cheers!
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Old Aug 1, 2003, 6:02 AM   #8
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Default Photos moved to Fotopic.net

Photos moved to Fotopic.net:
http://gallery15600.fotopic.net/show...n.php?id=38856

(my 30 days free pbase has expired!).

Cheers
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