I don't own an OM-3, but the OM-3 body appears to closely match the size and layout of the OM-2 film camera.
I took my vernier calipers to my OM-2 SP (Spot Program), and the W/H/D dimensions seem to match the OM-D OM-3 to within about a millimeter.
The offset of the lens mount also seems similar.
I think OM-D, in seeking to contain an OM1ii-like camera in a smaller body, decided to copy a classic layout.
Those that want a more modern take on the look can probably go with the OM-5ii.
I took my vernier calipers to my OM-2 SP (Spot Program), and the W/H/D dimensions seem to match the OM-D OM-3 to within about a millimeter.
The offset of the lens mount also seems similar.
I think OM-D, in seeking to contain an OM1ii-like camera in a smaller body, decided to copy a classic layout.
Those that want a more modern take on the look can probably go with the OM-5ii.









