before I return my sp3, I'm experimenting more because I think some of these stuff would be applicable to sp4. the original photoshop scales terribly make it virtually unusable on high resolution screen like sp3. some good folks found a way to use external manifest to solve the problem (http://surfaceproartist.com/blog/20...oshop-and-illustrator-readable-on-surface-pro). this trick still works on photoshop cc 2014, though you need to change the version value from 18.104.22.168 to 22.214.171.124. and now adobe added a 200% scaling option in photoshop cc 2014. I found it's perfect size for finger touch, however, some said it's too ugly and uses too much space. how does it compare to the old external manifest trick? I've tried out all these 3 scalings on sp3 and took screenshot, which one is your flavor? default scaling: photoshop's new 200% scaling: external manifest scaling: warning: the 200% scaling and external manifest scaling would double the size make it too big to use, so turn off the scaling before you try another one.