The P450 uses a single three-color ink cartridge (one $22 standard-yield cartridge is bundled) to print borderless photos in sizes 4-by-6 inches, A6, Hagaki card, or L, all at up to 4800 dots per inch. Lexmark claims that if you use its $40 4 by 6 Photo Printing Kit (140 sheets of photo paper and a high-yield print cartridge), you can achieve up to 140 prints for $40; that's roughly 29 cents per photo.
I found that with no PC connection to make, no software to install, only a single ink cartridge to click into place, and an automatic alignment mode, setting up this printer was a breeze. And it was just as easy to operate with the help of a pared-down number of control buttons and a 2.4-inch, pop-up color LCD display offering logical menu navigation.
Given that you're not able to hook this printer up to a computer, I definitely appreciated the ability to perform simple touch-up tasks as you select each photo you wish to print. Basic editing options include rotating 90 degrees, cropping and zooming, red-eye removal, image enhancement, and color effects (gray scale, sepia, antique brown, and antique gray). All adjustments are previewed on the display.
You can also print photos in three quality modes: photo (maximum), normal, or draft.