One keyboard shortcut (and feature) that's sorely missing is "open next image." CameraBag makes you manually open each individual image you want to work on — there is no way to quickly browse through all images in a given folder on your disk. This means you'll have to use it in tandem with another image management program: one to view your collection and one to edit your photos.
More serious image editors feature non-destructive editing, preserving your original and letting your roll back your changes. CameraBag 2 doesn't offer that level of granularity: Save your changes and it will overwrite your original image. Fortunately, you get a warning before this happens, and it's easy to save the image under another name. You also get to resize it at the same time, which is handy.
Three things make CameraBag fun to use: It's quick, it's simple, and the filters look good. Even if some of the defaults are painfully hip and retro, it's easy to tone them down and end up with some truly beautiful photos. Almost every time I reached for CameraBag, my photos looked the better for it at the end of the process — and it didn't take long, either. CameraBag won't replace Photoshop, but it doesn't try to, either.
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