Quote: "It'll still size it up the same way, not based on the software."
Actually it won't. The algorithms that Photoshop uses to decide what color a new pixel should be are much more advanced than other image editors. They consider what color neighboring pixels are, what color the old pixels are, and several other things. And, really its HOW they consider these things that makes the difference.
Try this:
1) Make 3 copies of an image.
2) open the first copy in MS paint, and increase its size approximately 20%.
3) Open the second copy in Photoshop (Hopefully you have it, otherwise we can't test this right now) and do the same 20% size increase.
4) Look at all 3 images (The paint-scaled one, the Photoshop-scaled one, and the original one) and tell me which scaled one looks better.
Make sure you save all 3 in the same format as the original, with no compression.
Although the difference may not be very drastic, you should notice a difference in quality between the paint and photoshop ones.
I COULD be entirely misinformed about this. But this is what one of my professors at PTI told me. He does Photoshop, Premier, Flash, and that kind of stuff for a living.
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