I don't use it for photo editing, but I to my naked eyes it has excellent viewing angles, and what appears to be accurate color. It has 82% gamut though, which is good but not as good as the U2410 which is better suited for professionals. It has a VESA mount so I don't think you need any sort of filter or adapter. I'm using a set of cheap Creative speakers as the soundbar did not get appear to be favorably received. You might find this to be of interest:
http://www.flatpanelshd.com/review.php?subaction=showfull&id=1275291737 Dell's website says it has 82% gamut so I think the 72% that's listed there is a typo.