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 Nikon D5100 Lens Mount Type Pentax K To Q Adapter Pentax Lens Adapter For Canon Lens Adapter For Pentax Pentax Q Adapter K Canon Lens Pentax Adapter Asahi Pentax Lens Adapter Pentax Lens To Lens Adapter Sigma 30 F.1.4 Sony A Mount
Macro Lens Vs Macro Filter 4 3 Lens Mount Sony Playstation 3 Memory Card Adapter Canon Eos 80d Mount Type Leica L Mount Lenses Third Party Phase One Lens Adapter Adapter Nikon Objektive An Fourthirds Gehaeuse Sony Nex 6 Flash Adapter Sony Speakers Iphone 5 Adapter Tamron Sony E-mount 200mm