Front Cover Differences
Version 3 on the left, Version 2 on the right. In Ver 3, the paint most obviously is of a different quality. The aperture scale is white numbers on black anodise, as opposed to black numbers on shiny aluminum in Ver 2. The bearing plates look to be the same, but the one in Ver 3 is mangled, which was probably the source of the shutter speed selector binding I experienced when installing it on the camera.
One thing that can't be seen here, is that the depth of the bayonets differs, with Ver 2 being taller when stacked next to the Ver 3 ones. Also, the slot that the aperture control arm resides in is wider on Ver 2.
Front Cover Differences
Version 3 on the left, Version 2 on the right. In Ver 3, the paint most obviously is of a different quality. The aperture scale is white numbers on black anodise, as opposed to black numbers on shiny aluminum in Ver 2. The bearing plates look to be the same, but the one in Ver 3 is mangled, which was probably the source of the shutter speed selector binding I experienced when installing it on the camera.
One thing that can't be seen here, is that the depth of the bayonets differs, with Ver 2 being taller when stacked next to the Ver 3 ones. Also, the slot that the aperture control arm resides in is wider on Ver 2.