kfconcept
Please note: our M42 adapter ring could not be suitable for Pentax Takumar Super Takumar Carl Zeiss M42 series(aperture pin does not fully depress, small tabs sticking out), as ours depresses the aperture pin all the way down
If your camera indicated "lens is not properly installed", please modify the camera menu settings. Usually called the "release the shutter the lens is not installed", you can modify the settings to allow. Specifically refer to the camera manual.Following are some examples:
Pentax Q Lens Adapter Pentax K To Q Adapter Pentax Lens Adapter For Canon Lens Adapter For Pentax Pentax Q Adapter K Lens Adapter For Pentax 645d Pentax K-1 Lens Adapter Pentax Lens To Lens Adapter Pentax 645d Lens Mount Nikon Wireless Adapter Troubleshooting
Eos T6 Digiant Len Filter Kit 85mm L Mount Lens Fuji X Mount 23mm Lens Zeikos Universal Lens Adapter Canon Adapter Stuck On Nikon Lens Fujifilm Gfx 50s Lens Mount Olympus Slr Lens Mount Vintage Lenses With Nikon F-mount Old Sony Rf To Rca Adapter Sony Marine Unilink Adapter