Minolta MD-Rokkor X 45mm f/2
The Minolta MD 45mm f/2 is a common slightly wide and fairly compact standard lens.
The lens is from the time when they started making less expensive kit lenses. It is well made by today’s standards, but not as nice as some of the older manual lenses, like the cheap feeling plastic aperture ring (most of the lens is still metal though).
The lens has 6 elements in 5 groups, and has only a 5 bladed diaphragm. The minimum focus distance is a long 0.6 m (2.1 ft), but the lens is fairly light for this vintage lens weighing 125 g (4.4 oz).
Comments on the Results
The center resolution is pretty good wide open, better by f/2.8, but shows a huge step up at f/4. The corners are good/very good by f/5.6.
Lateral CA isn’t well controlled for a prime like this lens, showing about 2 pixels across the range. This will be visible in some circumstances or zoomed in.
Coma and astigmatism aren’t bad, but there is some deformation of the bokeh circles in the corner wide open.
I didn’t specifically test this lens for flare, longitudinal CA, or take sample shots.
Pros and Cons
- Compact Size
- Extreme Corners
- About 1 f/stop behind