3 Sep
2013
3 Sep
'13
7:34 p.m.
What Chris said. Depends on whether or not there’s a preview already generated in the file, if so you’ll get that. If not, the Finder will generate one depending. When displayed, the Finder does a match from the embedded profile to the display’s profile. You can tell whether or not the file contains a thumbnail preview by looking at it in a Finder window, selecting the menu item View - Show View Options, then checking and unchecking "Show icon preview”. If the file’s icon looks like a preview and doesn’t change, that means it has an embedded preview. If it changes from showing a preview to showing an icon based on it’s file type, then it doesn’t contain a preview and the thumbnail you do see is generated by the Finder.