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 Lens Adapter Asahi Pentax Stereo Adapter Set Pentax Stereo Adapter 3d Set Pentax Stereo Adapter D Set Pentax Stereo Adapter Ebay Pentax Stereo Adapter Ii Vs D Set Sony 14mm 2.8 On Sony Adapter
Lens Cover For Gobe 67mm Nd Filter Canon M50 White With Adapter 1 2 S Mount Lens Nikon T Mount To 55mm Threaded Lens Autofocus Nikon To Lumix G5 Adapter Cf Sd Adapter Nikon D700 Contax G Pentax K Adapter Adaptador Wireless Sony Cechya 0081 Sony Smartwatch Wristband Adapter Sony Vpl-hw45es Wireless Hdmi Adapter