Ricoh GR Digital 3 vs. Ricoh GR Digital 4

Even on the outside the Ricoh GR Digital 4 will be almost identical to the GR Digital 3 (which dropped in price to $419). Take a look at the front of both cameras:

Ricoh GR Digital 3 front

Ricoh GR Digital 4 front

and the the back of both cameras:

Ricoh GR Digital 3 back

Ricoh GR Digital 4 back