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Old May 12, 2005, 8:43 PM   #11
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DGC wrote:
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I just printed a 16X20 and it is excellent. I'm quite confident that I could increase this significantly and still get good quality.

I created a 16X20 file at 300dpi which is close to 40mb. The real secret to producing large images, at least in Photoshop, is to blow them up to your desired size in exactly 10% increments. Never take your file from current to final in one step.

Sounds a little strange but it works. Try it and you'll see.
how did you "create" a 300dpi file @ 16x20? interpolation? have you tried printing 16x20 from the FZ20 with just the pixels from the camera (2560x1920)? i'd be interested to know how such a print would look, with <150 ppi... i don't have photoshop yet, so interpolating images is not a process i can do...


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Old May 12, 2005, 9:24 PM   #12
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squirl you can use Irfanview, Fast Stone etc. to interpolate. Use 10% steps up to the size you want.. Check this out

http://www.interpolatethis.com/

What program do you use for editing?
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Old May 13, 2005, 12:08 AM   #13
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nooner wrote:
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squirl you can use Irfanview, Fast Stone etc. to interpolate. Use 10% steps up to the size you want.. Check this out

http://www.interpolatethis.com/

What program do you use for editing?
does Irfanview do interpolation?i useit a lot, and Picasa... i didn't think Irfanview had that capability...


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Old May 13, 2005, 1:29 AM   #14
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Irfanview uses Lanczos and B-Spline resampling which are both good methods. Check it out sometime. Go to resize and you'll see the options. Play around with it and you'll see how it works. Read thru this if you want.

http://www.interpolatethis.com/InterpComparo.html

http://www.interpolatethis.com/interp.html
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Old May 13, 2005, 9:19 AM   #15
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i've seen the various resampling methods... i just didn't know theyused interpolationwhen enlarging images... good to know!
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