1220 Views 2 Replies Latest reply: Apr 1, 2010 9:00 PM by Rick Lang
Usually the size in inches is left to the printer (person). In any case, 4" x 6" at 300 dots-per-inch is 1200 x 1800 dots. Assuming they are equating a printer dot to a pixel, you should simply shoot raw, import, constrain the crop +aspect ratio+ to 4x6 (it's a preset), and export at 1800 x 1800 pixels max dimension.
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In Aperture, select Presets -> Image Export. In the image quality area, you can specify the dpi you want such as 72 for screens or 300 for print. As for the size, you can control that first by cropping the image in an appropriate 4 x 6 or 2 x 3 aspect ratio (or 3 x 2 if landscape orientation is used) and then when you export, again modify the image preset to "fit between" and then specify 1200 x 1800 while the resolution is set to 300 dpi.
I know the other individual recommended 1800 x 1800, but I'm not sure that is needed if all photos are in the same orientation, but try it and see. Using 1800 x 1800 seems appropriate if you are sending a mix of landscape and portrait images.
Message was edited by: Rick Lang