First crop the image to 4x6 size ratio in Photoshop.
How to automatically crop photos in Photos on iPhone and iPad
4x6 = 2:3 aspect ratio.
The most popular sizes for photo prints are: 4×6: 4×6 prints measure approximately 4” x 5 ⅞”. This is the standard size in the photofinishing industry because this print size mirrors the aspect ratio of most digital cameras viewfinder.
Is 6x4 the same as 4x6? Photo prints are typically measured and presented as the width by the height. Therefore, a 4x6 photo is 4 inches long and 6 inches high whereas a 6x4 photo is 6 inches long and 4 inches high. 4x6 photos are ideal for printing photos taken on a phone in portrait (vertical) orientation.
In order to determine the aspect ratios for each print, we simply reduce the dimensions like we would a fraction: 4x6 = 2:3 aspect ratio. 5x7 = 5:7.
1 Inch means 2.56 Centimeters. So, in centimeters, the 4×6 format is 10.16 x 15.24 cm (10×15).
Loading Paper in the Photo Tray
Image Resolution and DPI Requirements
|Print Size/Product||Minimum Image Resolution|
|4x6 Prints||540x360 pixels|
|5x7 Prints||630x450 Pixels|
|8x10 Prints||900x720 pixels|
|Wallet Prints||270x180 pixels|
Actual size of Photo 4x6" (10x15cm)
So, in centimeters, the 4×6 format is 10.16 x 15.24 cm (10×15).
Cropping digital photos to fit a 4×6 print This means that in most cases, the top, bottom, left or right (or all edges) of your photo has to be cut off in order to make it fit on a 4×6 print. This idea of a photo's shape is technically known as its aspect ratio or ratio. The aspect ratio of a 4×6 photo is 3:2.
How to print 4×6 photos from iPhone
Your choices are: