Apple's latest Digital Camera Raw Compatibility Update extends Aperture 3 and iPhoto '09 support to eight more cameras. Newly supported cameras include the Canon PowerShot SX1 IS, Olympus E-PL1, Panasonic Lumix DMC-G2, Panasonic Lumix DMC-G10, Samsung NX10, Sony Alpha DSLR-A390, Sony Alpha NEX-3, and Sony Alpha NEX-5. The update is available via Software Update and the Apple Support Downloads page. Apple also publishes a full list of supported cameras. (Free, 5.68 MB)
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Quick Look Shortcut in Expose on Snow Leopard
In Expose mode in Snow Leopard, hover your mouse pointer over a window and press the Space bar to view a larger Quick Look version of that window.