Rokkor Lens Code
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| Auto Rokkor-PF f/1.4 58mm image by Dirk HR Spennemann (Image rights) |
Minolta employed a two-letter alphanumeric system to code the make up of its lenses. The first letter sets out the number of lens groups, while the second letter sets out the number of lens elements.[1]
Codes
First Letter:
- T- Tri
- Q - Quatro / Quadr
- P - Penta
- H - Hexa
- S - Septi
- O - Octo
- N - Novem
Second letter:
C=3, D=4, E=5, etc
Examples
ROKKOR-TC = 3 lens elements in 3 lens groups
ROKKOR-TD = 4 lens elements in 3 lens groups
ROKKOR-QD = 4 lens elements in 4 lens groups
ROKKOR-QE = 5 lens elements in 4 lens groups
ROKKOR-QF = 6 lens elements in 4 lens groups
ROKKOR-QH = 8 lens elements in 4 lens groups
ROKKOR-PE = 5 lens elements in 5 lens groups
ROKKOR-PF = 6 lens elements in 5 lens groups [2]
ROKKOR-PG = 7 lens elements in 5 lens groups
ROKKOR-PH = 8 lens elements in 5 lens groups
ROKKOR-PI = 9 lens elements in 5 lens groups
ROKKOR-HF = 6 lens elements in 6 lens groups
ROKKOR-HG = 7 lens elements in 6 lens groups
ROKKOR-HH = 8 lens elements in 6 lens groups
ROKKOR-SG = 7 lens elements in 7 lens groups
ROKKOR-SI = 9 lens elements in 7 lens groups
ROKKOR-OK = 11 lens elements in 8 lens groups
ROKKOR-NJ = 10 lens elements in 9 lens groups
ROKKOR-NL = 12 lens elements in 9 lens groups
Notes and References
- ↑ This information has been gleaned from a series of controbutions by John Goddard and Eugene Ilchenko on the Internet Directory of Camera Collectors listserver
- ↑ Examples in the camera-wiki pool: Auto Rokkor-PF f/1.4 58mm; MC Rokkor-PF f/1.7 50mm (old version); MC Rokkor-PF f/1.7 50mm (new version)
