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:
Asahi Pentax Stereo Adapter Pentax Stereo Adapter 49mm Pentax Stereo Adapter 52mm Pentax Stereo Adapter Set Pentax Stereo Lens Adapter Tokina 11 16 F2 8 Nikon Mount Asahi Pentax Stereo Adapter Set Pentax Stereo Adapter 3d Set Pentax Stereo Adapter Ebay Pentax Stereo Adapter Ii Vs D Set
Solar Filter For Nikon 200-500mm Lens Canon 40d Lens Mount Sony A7r Lens Mount Pronto Autofocus Lens Adapter Fotodiox Pro Fusion Adapter With Canon Macro Sony Pmw 300 Lens Mount Sony Adapter For Minolta Lenses Z Mount Nikon Win Sony E-mount 55-210 4.5-6.3 Oss Sony X Mount Lenses