| Name Manufacturer / Model | Mount Bayonet | Type Category | Year Released | Focal mm | Aperture f/ | Weight g |
|---|---|---|---|---|---|---|
| PENTAX K | Zoom | — | 28-70mm | f/3.5 | — | |
Helios-44M58mm F/2 | PENTAX K+ M39, M42 | Portrait | — | 58mm | f/2 | — |
Helios-6552mm F/2 | PENTAX K+ M39 | Portrait | — | 52mm | f/2 | — |
Helios-77M-450mm F/1.8 МС | PENTAX K+ M42 | Portrait | — | 50mm | f/1.8 | — |
| PENTAX K+ CANON FD, CONTAX/YASHICA, KONICA AR, MINOLTA SR, NIKON F, NIKON F DX, OLYMPUS OM | Macro | — | 25-42mm | f/3.5 | — | |
| PENTAX K+ M42 | Wide | — | 28mm | f/2.8 | — | |
| PENTAX K | Macro | — | 80-205mm | f/3.8 | — | |
| PENTAX K+ CANON FD, OLYMPUS OM | Telephoto | — | 200mm | f/3.5 | — | |
| PENTAX K+ CANON FD, M42, OLYMPUS OM | Telephoto | — | 300mm | f/5.6 | — | |
Irix11mm F/4 | PENTAX K+ CANON EF, CANON EF-S, NIKON F, NIKON F DX | Wide | 2017 | 11mm | f/4 | 790g |
| PENTAX K+ CANON EF, CANON EF-S, NIKON F, NIKON F DX, SONY E | Macro | 2018 | 150mm | f/2.8 | 848g | |
Irix15mm F/2.4 | PENTAX K+ CANON EF, CANON EF-S, NIKON F, NIKON F DX, SONY E | Wide | 2016 | 15mm | f/2.4 | 608g |
Irix45mm F/1.4 | PENTAX K+ CANON EF, CANON EF-S, NIKON F, NIKON F DX | Prime | 2020 | 45mm | f/1.4 | 925g |
JCPenney135mm F/2.8 | PENTAX K+ CANON FD, CONTAX/YASHICA, KONICA AR, M42, MINOLTA MD, MINOLTA SR, NIKON F, NIKON F DX, OLYMPUS OM | Telephoto | — | 135mm | f/2.8 | — |
JCPenney135mm F/2.8 MC | PENTAX K+ CANON FD, CONTAX/YASHICA, KONICA AR, M42, MINOLTA SR, NIKON F, NIKON F DX, OLYMPUS OM | Telephoto | — | 135mm | f/2.8 | — |
JCPenney28-80mm F/3.5 Multi-Coated | PENTAX K | Zoom | — | 28-80mm | f/3.5 | — |
JCPenney28mm F/2.8 Multi-Coated | PENTAX K+ CANON FD, MINOLTA MD, MINOLTA SR | Wide | — | 28mm | f/2.8 | — |
JCPenneyMC 80-200mm F/3.9 | PENTAX K+ CANON FD, CONTAX/YASHICA, KONICA AR, M42, MINOLTA SR, NIKON F, NIKON F DX, OLYMPUS OM | Zoom | — | 80-200mm | f/3.9 | — |
JCPenneyMC 80-200mm F/4.5 | PENTAX K+ CANON FD, CONTAX/YASHICA, KONICA AR, M42, MINOLTA SR, NIKON F, NIKON F DX, OLYMPUS OM | Zoom | — | 80-200mm | f/4.5 | — |
Jupiter-21A200mm F/4 | PENTAX K+ INTERCHANGEABLE MOUNT, M39, M42, NIKON F, NIKON F DX | Telephoto | — | 200mm | f/4 | — |
Jupiter-985mm F/2 | PENTAX K+ M39, M42 | Portrait | — | 85mm | f/2 | — |
Kalimar50mm F/1.7 | PENTAX K+ CANON FD, CONTAX/YASHICA, KONICA AR, M42, MINOLTA MD, MINOLTA SR, NIKON F, NIKON F DX, OLYMPUS OM | Portrait | — | 50mm | f/1.7 | — |
Kalimar80-200mm F/4.5-5.6 MC Macro | PENTAX K+ CANON FD, CONTAX/YASHICA, KONICA AR, M42, MINOLTA MD, MINOLTA SR, NIKON F, NIKON F DX, OLYMPUS OM | Macro | — | 80-200mm | f/4.5 | — |
KenlockAuto Zoom 85-210mm F/4.5 | PENTAX K | Telephoto | — | 85-210mm | f/4.5 | — |
Kenlock-Mc-torMC 80-200mm F/4.5 | PENTAX K | Zoom | — | 80-200mm | f/4.5 | — |
Kiron24mm F/2 MC | PENTAX K+ CANON FD, CONTAX/YASHICA, KONICA AR, M42, MINOLTA SR, NIKON F, NIKON F DX, OLYMPUS OM | Wide | — | 24mm | f/2 | — |
Kiron28-105mm F/3.2-4.5 | PENTAX K+ CANON FD, CONTAX/YASHICA, KONICA AR, MINOLTA MD, MINOLTA SR, NIKON F, NIKON F DX, OLYMPUS OM | Zoom | — | 28-105mm | f/3.2 | — |
Kiron28mm F/2.8 | PENTAX K+ CANON FD, CONTAX/YASHICA, MINOLTA MD, MINOLTA SR, NIKON F, NIKON F DX, OLYMPUS OM | Wide | — | 28mm | f/2.8 | — |