Variation of Minolta non-AF SLR Lens Mount
First generation
There are several variations of diaphragm control, such as manual
aperture,
preset diaphragm, semi automatic diaphragm and automatic diaphragm.
- a lever(like a preview lever) is a aperture ring lock lever
(left).
- two types of preview lever (center and right).
Second generation
The Type MC started from SR-T101 body in 1966.
- TTL full-aperture metering and aperture ring has a meter coupler.
Third generation
The Type MD started with XD, XD-7 and XD-11 body in 1977. dual-mode
metering. The Type New MD has a focus aid pin
(available
only for X-600).
- New MD has a third coupler pin for focus aid (left).
- MD has a coupler for shutter priority exposure(right).
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