Rectangle, Square, or Panorama? How to crop your photo?
The standard formats (height/width ratios, also called aspect ratios) for photographs have evolved over time. But some formats have proven over time that they’re best left untouched, and so camera makers stick with them. So let’s take a look at the most common aspect ratios for digital images—these ratios are also the ones produced by digital cameras, and photo labs and photo frame manufacturers expect them.