| Timeline Asahi Pentax Models | |||||
| FROM | UNTIL | ||||
| 1919 | Asahi Optical Joint Stock Co. was founded | ||||
| 1938 | Asahi Optical Co., Ltd. was founded | ||||
| M37 | 37 mm screwmount | ||||
| 1952 | 1953 | Asahiflex I | |||
| 1953 | Asahiflex IA | ||||
| 1954 | 1956 | Asahiflex IIB / Tower 23 / Tower 24 | |||
| 1955 | 1957 | Asahiflex IIA / Tower 22 | |||
| 1956 | 1957 | Asahiflex IIB | |||
| M42 | 42 mm screwmount | ||||
| 1957 | 1958 | Asahi Pentax | |||
| 1957/58 | 1959 | Asahi Pentax S | |||
| 1958 | 1959 | Asahi Pentax K | |||
| 1959 | 1960/61 | Asahi Pentax S2 / H2 / Heiland H2 | early type without meter coupling | ||
| 1960/61 | 1962 | Asahi Pentax S3 / Heiland H3 | |||
| 1961 | 1962 | Asahi Pentax S2 / H2 | late type with meter coupling | ||
| 1961 | 1962 | Asahi Pentax S1 / Heiland H1 | |||
| 1962 | 1968 | Asahi Pentax Super S2 | |||
| 1962 | 1963/64 | Asahi Pentax SV / H3v | early type | ||
| 1961/62 | 1963 | Asahi Pentax S1a / H1a | early type | ||
| 1964 | 1968 | Asahi Pentax SV / H3v | late type orange "r" on rewind knob | ||
| 1964 | 1968 | Asahi Pentax S1a / H1a | late type orange "r" on rewind knob | ||
| 1964 | 1965 | Asahi Pentax Spotmatic SP | early type | ||
| 1965 | 1973 | Asahi Pentax Spotmatic SP | late type (p/no.23102) | ||
| 1965 | 1973 | Asahi Pentax Spotmatic SP Motor Drive | |||
| 1965 | 1973 | Asahi Pentax SP Data II | |||
| 1968 | 1969/71 | Asahi Pentax SL | |||
| 1970 | Stereo ST-120 | ||||
| 1971 | 1976 | Asahi Pentax Spotmatic II | |||
| 1971 | 1973 | Asahi Pentax Spotmatic IIa | auto flash sensor | ||
| 1971 | 1973 | Asahi Pentax Spotmatic II Motor Drive | |||
| 1971 | 1974 | Asahi Pentax Spotmatic SP 500 | |||
| 1971 | 1972 | Asahi Pentax Electro Spotmatic | |||
| 1971 | 1972/73 | Asahi Pentax ES | |||
| 1973/74 | 1976 | Asahi Pentax Spotmatic SP 1000 | |||
| 1973 | 1976 | Asahi Pentax Spotmatic F | |||
| 1973 | 1976 | Asahi Pentax Spotmatic F Motor Drive | |||
| 1973 | 1976 | Asahi Pentax Spotmatic F Data II | |||
| 1973 | 1976 | Asahi Pentax Spotmatic F MD Data II | |||
| 1973 | 1975 | Asahi Pentax ES II | |||
| 1973 | 1975 | Asahi Pentax ES II Motor Drive | |||
| 1973 | 1975 | Asahi Pentax ES II Data II | |||
| 1973 | 1975 | Asahi Pentax ES II MD Data II | |||
| K Mount | Manual Focus Bayonet Mount | ||||
| 1975 | 1978/80 | Asahi Pentax K2 | black | chrome | |
| 1975 | 1977 | Asahi Pentax KX | black | chrome | |
| 1975 | 1977 | Asahi Pentax KX Motor Drive | black | chrome | |
| 1975 | 1977 | Asahi Pentax KM | black | chrome | |
| 1975 | 1977 | Asahi Pentax KM Motor Drive | chrome | ||
| 1975/76 | 1997/98 | Asahi Pentax K1000 (Made in Japan) | black | chrome | |
| 1976 | 1980 | Asahi Pentax K2 DMD | black | ||
| 1976/77 | 1979/81 | Asahi Pentax ME | black | chrome | SE with brown leather |
| 1976 | 1984/85 | Asahi Pentax MX | black | chrome | data |
| 1976 | Asahi Pentax MX Data | ||||
| 1976 | Asahi Pentax MX Medical | ||||
| 1978 | 1990 | Asahi Pentax K1000 (Made in Hong Kong) | |||
| 1979 | Asahi Pentax K1000 SE | chrome | brown leather (late version is black) | ||
| 1978/79 | 1980/82 | Asahi Pentax MV | black | ||
| 1979/80 | 1981/82 | Asahi Pentax MV1 | black | chrome | |
| 1979/80 | 1984/87 | Asahi Pentax ME Super | black | chrome | SE |
| 1980 | 2001 | Asahi Pentax LX | black | chrome | |
| 1981 | 1981 | Asahi Pentax LX Gold | gold | ||
| 1981/82 | 1984/85 | Asahi Pentax MG | black | chrome | |
| 1983 | 1985/87 | Asahi Pentax Super A / Super Program | black | chrome | |
| 1984 | 1988 | Pentax Program A / Program Plus | black | silver / black | |
| 1984/85 | 1985/87 | Pentax A3 / A3000 | black | ||
| 1986 | Pentax A3 Date (s) / A3001 Date (s) | ||||
| 1985 | 1987/88 | Pentax P3 / P30 | black | dark grey | |
| 1986 | 1987 | Pentax P30 Date | |||
| 1986 | 1988/89 | Pentax P5 / P50 | black | ||
| 1986 | 1988 | Pentax P50 Date | |||
| 1988 | 1990 | Pentax P30n | black | dark grey | |
| 1990 | 1997 | Pentax P30t | black | dark grey | |
| 1990 | 1997 | Pentax K1000 (Made in China) | |||
| 1994 | 1994 | Asahi Pentax LX Titan | titanium | ||
| 1996 | 1996 | Asahi Pentax LX Limited | black titanium | ||
| 1997 | 2004 | Pentax MZ-M / ZX-M | |||
| 2000 | 2000 | LX 2000 | chrome | ||
| AF | Auto Focus Bayonet Mount | ||||
| 1981 | 1984/88 | Asahi Pentax ME-F | black | chrome | |
| 1987 | 1988/89 | Pentax SFX / SF1 | dark grey | ||
| 1988 | 1991/93 | Pentax SF7 / SF10 | |||
| 1988/89 | 1991/93 | Pentax SFXn / SF1n | dark grey | ||
| 1991 | 1994/95 | Pentax Z-10 / PZ-10 | black | ||
| 1991/92 | 1994/95 | Pentax Z-1 / PZ-1 | black | ||
| 1992/94 | 1995 | Pentax Z-5 | black | silver / black | |
| 1993 | 1995 | Pentax Z-20 / Z-20p / PZ-20 | black | ||
| 1993/94 | 1995/96 | Pentax Z-50p | black | ||
| 1993/94 | 1994 | Pentax Z-1 SE | silver / black | ||
| 1994/95 | 2000 | Pentax Z-1p / PZ-1p | black | ||
| 1995 | 1997 | Pentax Z-5p | |||
| 1995 | 1997 | Pentax Z-70 / Z-70p / PZ-70 | black | ||
| 1995/96 | 1997/01 | Pentax MZ-5 / ZX-5 | black | silver / black | |
| 1996 | 2000/01 | Pentax MZ-10 / ZX-10 | black | silver / black | |
| 1997 | 2001/02 | Pentax MZ-50 / ZX-50 | silver / black | ||
| 1997 | 2003/05 | Pentax MZ-3 QD | black | silver / black | |
| 1997 | 2003/05 | Pentax MZ-5n / ZX-5n | black | silver / black | |
| 1999 | 2001 | Pentax MZ-7 / ZX-7 | black | silver / black | |
| 2000 | 2002/05 | Pentax MZ-30 / ZX-30 | silver / black | ||
| 2000 | 2002 | Pentax MZ-3 Limited | black | ||
| 2001 | 2004/05 | Pentax MZ-S | black | silver / black | |
| 2002 | 2004/05 | Pentax MZ-L / MZ-6 / ZX-L | silver / black | ||
| 2002 | 2004/05 | Pentax MZ-60 / ZX-60 | silver / black | ||
| 2003 | 2004 | Pentax *ist | silver / black |