送交者: Passer-By-From-Texas 于 June 11, 2010 19:41:02:
回答: 搞不明白 由 明月儿 于 June 11, 2010 18:51:09:
1. Resolution 300 pixel/inch is the original one from your camera and in Photoshop. And it looks like you cropped your original shot down to about 3", quite big chop.
2. When you sent it to the web, usually displayed on lower resolution monitor (in old days, it was 72 pixel/inch, and now could be over 100). So, your "small sized" picture in high resolution will be enlarged dramatically when it is displayed in a lower resolution monitor. It doesn't matter whether it sits in photobucket or viewed in JUOAA.
3. Your photo shows significant color fringe (as circled out by red and blue lines). It is a chromatic abberation (CA); color shifting due to difference of focusing charateristics of different colors through the same optical lens.
For a good quality lens, such a significant CA usually comes in the corner/border region or your lighting conditions were less favorable. This picture might be because you had chopped it so much (and now enlarged almost to its 100%, showing very detail of its possible problems). But I'm still suprised to see that amount of CA. BTW, did you rotate this picture here? The shifting direction seems different, which caused difficulty in software correction.
But, all in all, the picture is very nice in terms of content and composition. Go, 明月儿! Go! :)))