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 6x7 Panoramic Adapter Lens Adapter For A Canon Rebel T6 Pentax 6x7 Adapter Canon Pentax 645 Adapter 6x7 Pentax 6x7 35mm Adapter Pentax 6x7 Adapter K Pentax 6x7 Pentax-m 67 Adapter Pentax 6x7 Pk Adapter Pentax 6x7 To Gfx Adapter Pentax 6x7 To M42 Adapter
Eyepiece Adapter For Camera Lens Nikon F Mount Body Cap Tamron 17-28mm F2.8 Sony E-mount Fuji S8200 Lens Adapter Collapsible Lens For M42 Mount Best Pl To Mft Adapter Pentax M To Nikon Adapter Nikon Black 34mm Mount Sony Np F970 Aa Battery Adapter Sony E Mount 50mm 49mm Thread Nd