My camera has a plethora of image sizes available for capturing images and I recently read that 300 pixels per inch is superb for prints. My question is, for a 4x6 print, what dimensions does the image need to have to come out at 300 ppi? Is that 1800 x 1200 (6 x 300w by 4 x 300h)? And for an 8x10, that would be 2400 x 3000 (3000 x 2400 landscape)? Does it look funny or even add anything by printing more pixels? Is that even possible, or does the image need to be cropped to compatable dimensions?