The Regular 10x15 and the remaining print formats have different crop ratios, each adapted to specific sources. If you’re shooting with your phone (any brand) or with a Micro Four-thirds camera, the default aspect ratio is 4:3. Our Regular format was specially designed for these cases. If you're using a Full Frame, APS or APS-C sensor, the default aspect ratio is 3:2. In this case, we recommend using the 10x15 format.
Choosing the right print format ensures that your image is printed with minimal or no unwanted cropping.
If you're not sure about your device's crop ratio, please contact us so we can help.