-1.04 mm
Space for the adapter
45.46 mm
Pentax K flange
46.50 mm
Nikon F flange
Verdict: No infinity focus — the Pentax K flange is 1.0 mm shorter than the body's, so an adapter would need corrective glass.
What to expect#
Adapters with an optical element exist for some combinations, but they reduce image quality. A glass-free adapter in this direction only works for macro/close focus.
Pentax K lenses you could adapt#
- Laowa 12mm f/2.8 Zero-D
- Laowa 15mm F/4 Wide Angle Macro
- Laowa 60mm f/2.8 2X Ultra-Macro
- Samyang 10mm f/2.8 ED AS NCS CS
- Samyang 135mm f/2 ED UMC
- Samyang 14mm f/2.8 AE ED AS IF UMC
- Samyang 16mm f/2.0 ED AS UMC CS
- Samyang 20mm f/1.8 ED AS UMC
- Samyang 24mm f/1.4 ED AS IF UMC
- Samyang 85mm f/1.4 IF UMC Aspherical
- Samyang 8mm f/3.5 Fish-Eye CS
- Samyang T-S 24mm f/3.5 ED AS UMC
- Pentax F 28-80mm f/3.5-4.5
- Pentax HD Pentax DA* 16-50mm f/2.8 ED PLM AW
- Pentax HD Pentax-D FA 15-30mm f/2.8 ED SDM WR
- Pentax HD Pentax-D FA 150-450mm f/4.5-5.6 ED DC AW
- Pentax HD Pentax-D FA 24-70mm f/2.8 ED SDM WR
- Pentax HD Pentax-D FA 28-105mm f/3.5-5.6 ED DC WR
Nikon F cameras#
- Nikon D6 2020
- Nikon D780 2020
- Nikon D3500 2018
- Nikon D7500 2017
- Nikon D850 2017
- Nikon D5600 2016
- Nikon D3400 2016
- Nikon D500 2016
- Nikon D5 2016
- Nikon D5500 2015
- Nikon D7200 2015
- Nikon D4S 2014
- Nikon D750 2014
- Nikon D810 2014
- Nikon D3300 2014
- Nikon D7100 2013
- Nikon D5300 2013
- Nikon D610 2013
Other systems for Pentax K lenses#
Frequently asked questions#
Will Pentax K lenses autofocus on Nikon F?
This adapter direction is not practical.
Does a Pentax K to Nikon F adapter affect image quality?
Any adapter that restores infinity focus here needs a corrective lens, which typically lowers sharpness and adds a slight teleconverter effect.
Last updated October 03, 2026 · How we calculate · Sources