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:
Lens Hood Variable Nd Filter Asahi Pentax Stereo Adapter Pentax Stereo Adapter 49mm Pentax Stereo Adapter 52mm Pentax Stereo Adapter Set Pentax Stereo Lens Adapter Asahi Pentax Stereo Adapter Set Pentax Stereo Adapter D Set Pentax Stereo Adapter Ebay Pentax Stereo Adapter Ii Vs D Set
Solar Filter For Nikon Lens Sigma Adapter For Canon Smallest L Mount Lens E-mount Comparison Sony 90mm Canon 100mm Macro Vivitar 70-150mm F 3.8 Canon Mount Canon G7x Lensmate Filter Adapter Light Leaks Best Lens For Full Frame Mirrorless F-mount Vivitar Tele-zoom 90-230mm Lens Mount Size Of Nikon Z Mount Sony E Mount Lenses Lineup