How to scale down to an exact pixel dimension?
Question
I'm copying and pasting an Illustrator CS3 vector graphic into Photoshop CS3. I need it to be exactly 32px high, so I enter "32px" in the transform settings.
To my chagrin, the final image comes out to be 33px high. So I try locking the transform height at 31px and it still comes out at 33px high. Then I try to lock the transform height at 30px and it comes out at 31px high. It has skipped 32px!!!
Popular Answer
Disregard my previous answer here. False Positive. It looked like that was the case, but I was wrong.
Update: One thing that did seem to work, for real this time :), is to set the registration point (leftmost side of the Transform options) to be top-left. For me this caused Photoshop to lock the 32px height and automatically round the width to a full-pixel value as well.
I am also noticing that this might have something to do with the X/Y position of the center registration point. I can only reproduce this problem when I cause both its X and Y values to fall between pixels (e.g., X: 258.5px and Y: 260.5px instead of 258.0 and 260.0).