Seems like Apple's latest Mac OS X version, 10.8.x "Mountain Lion" might be a nice upgrade for photographers...
The New Mountain Lion Finder Is Fantastic For Photographers"Back in the time of the OS X Leopards, the Finder became a whole lot more useful for anyone with photos and videos on their Macs (ie. everybody)/ We got Quick Look, which let us watch slideshows and movies right there on the desktop, and the Finder itself was good enough to use as a lightweight photo viewer.
Then Lion came along and broke one essential tool: the little slider in the bottom right of Finder windows had its functionality removed. It used to let you zoom file thumbnails defaults write Finder trackpad zoom, but in Lion the tool remained, but did nothing.
Thankfully in Mountain Lion the slider now works again. And happily for the photographers out there, the Finder has some other new tricks you’re going to love."