Konica Hexanon AR 57mm f/1.2 vs Minolta MC Rokkor-PG 58mm f/1.2

What actually differs

• Both open to f/1.2, so neither has a speed advantage.
• The Minolta MC Rokkor-PG 58mm f/1.2 is cheaper. Typical used value is $480 against $850, a gap of $370 (roughly 1.8x). Ranges: $300 to $850 versus $500 to $1,600.
• The Minolta MC Rokkor-PG 58mm f/1.2 is longer at 58mm against 57mm, a 1mm difference that tightens framing slightly and increases background magnification.
• The Konica Hexanon AR 57mm f/1.2 is the older design; production began around 1965 against 1966 for the Minolta MC Rokkor-PG 58mm f/1.2 (1965-1970s versus 1966-1973).
• They use different mounts, Konica AR and Minolta SR (MC), so each needs its own adapter. Both reach infinity on mirrorless bodies with a plain mechanical adapter.
• Construction differs: 7 elements in 6 groups for the Konica Hexanon AR 57mm f/1.2, 7 elements in 5 groups for the Minolta MC Rokkor-PG 58mm f/1.2.

Which one to buy

On the catalog data the Minolta MC Rokkor-PG 58mm f/1.2 wins on the $370 lower typical price, and the Konica Hexanon AR 57mm f/1.2 gives up nothing measurable in return except its own rendering, described below. Condition and variant matter more than the spec sheet at these prices.

Minimum focus distance, weight, and measured sharpness are not in the catalog, so this comparison does not claim anything about them.