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Old Jul 3, 2013, 11:26 PM   #26
macuser453787
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Originally Posted by thekev View Post
It sounds like the initial jpeg was of very high quality. Images vary, although I'm still somewhat surprised.
The guy at the copy shop could have used a PS plug-in like OnOne's Perfect Resize (Genuine Fractals). Still, i hear you - there's only so much that can be done, unless the guy used it to up-sample and then up-sample again...?

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Originally Posted by StephenCampbell View Post
I just realized that Preview has a "resize image" feature as well.

Does anybody know if there's anything inferior about Preview's resize image features vs. Photoshop's?

When I resized it to 7200x8866 in Preview, the result was a 3.6MB Jpeg which to my eyes looks no different than the 191MB TIFF that the guy created for me, or the 11MB Jpeg that he created for me.

Am I right in assuming that there actually might not be any difference at all between those three files, since the source file was a 133KB file at 480x579? Am I not really going to be missing anything that could have been there if I use the 3.6MB 7200x8866 Jpeg? They really look the same to me.
FWIW, I personally would trust Photoshop over Preview with something like this any day of the week. Adobe's been making Photoshop for many years, and it's industry-standard software. Preview... not so much.
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Old Jul 3, 2013, 11:34 PM   #27
thekev
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Quote:
Originally Posted by macuser453787 View Post
The guy at the copy shop could have used a PS plug-in like OnOne's Perfect Resize (Genuine Fractals). Still, i hear you - there's only so much that can be done, unless the guy used it to up-sample and then up-sample again...?
I must have used Genuine Fractals around Photoshop 6 on Leaf Valeo files, so yeah I'm familiar with it. I also like to think of myself like the old man and the sea.
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Old Jul 4, 2013, 12:40 AM   #28
macuser453787
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I must have used Genuine Fractals around Photoshop 6 on Leaf Valeo files, so yeah I'm familiar with it. I also like to think of myself like the old man and the sea.
Yeah GF has been around for a while. Don't remember exactly when but OnOne bought it some years back (not too many) and eventually changed the name of it to Perfect Resize. I have GF v4 and v5 (v5 was a free upgrade when I bought v4), and Extensis' pxl Smartscale 1.0.

Great programs, those.
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Old Jul 5, 2013, 03:06 AM   #29
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I would love to hear from a Photoshop user about whether they could tell a difference between a resampled photo done in Photoshop vs. in Preview. I compared the TIFF file the guy created for me in Photoshop with a Jpeg created by Preview on my computer and I couldn't tell a difference in quality at all.
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