For camera compatibility… Well, there’s a few.
Nikon – FM / FE / FM2 / FE2 / FA / FM3A
Leica – M1/ M2 / M3 / M4 / M4-2 / M4-P / M6¹ / M7¹ / MA / MD / MD-2 / MP¹
Olympus – OM-1 / OM-1n / OM-2 / OM-2n / OM-2sp / OM-3 (Ti) / OM-4 (Ti)
Canon – AE-1 / AE-1 Program / AT-1 / AV-1 / A-1
Pentax – ME / MX / MV / MV-11 / ME Super / MG / ME-F / Super A / Super Program / Program Plus
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