Im planning on getting one but i dont have windows on my computer…
For the past three years, I have been running Windows XP on my iBook because Photoshop CS2 runs faster on XP … I don’t know why.
Nikon software will run on both Mac and PC’s, you can use iPhoto to sort and manipulate your images from the D40. Is there a reason you think it will not work on your Mac?
Cameras on not OS dependent … only programs.

The software that comes with it should have programs for Macintosh.
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