That really is a good question. I don't know the answer, but I can suggest a test. Take an image with fine, high-contrast detail, and use the crop tool to resize downward slightly. Repeat a few times. Save. Change your preferences as to which algorithm gets used. Repeat the above test. Compare the images.
If you do this, you should be able to determine:
1.) If PS changes the algorithm based on your preferences setting
2.) If it does not, which algorithm do the results most closely resemble? |