It is a common question: how can you find out if a photographer is professional or not. There are many different answers but below is one set of possible criteria.

While others are clumsy with the newly introduced panorama feature of the iPhone that Getty Images photojournalist Daniel Berehulak shows, how to use the right way.

Have a look at a D700 taken totally apart. Nikon’s former semi-professional camera looks like a jigsaw puzzle game in this image. Look for the shutter unit, mount, electronics and the rest.