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:
Nikon 10 Pin Adapter Sony 3-pin Antenna Adapter Canon 3 Pin Adapter Sony 30 Pin To Lightning Adapter 4 Pin 24v Adapter Canon 8 Pin Ecf126 Control To Lens Adapter Nikon Ft1 Lens Adapter Nikon 2-pin 10-pin Adapter Nikon 3 Pin Adapter Sony 16 Pin Adapter
Instax Mini 8 Color Filter Lens Set Nikon 18-140 Mm Lens Filter Canon M50 Lens Mount Sony Pulse 3d Wireless Adapter 24-105mm Sony E Mount Nifty Fifty Sony E Mount Pentax Lens Adapter For Canon F-c Mount Lens Adapter Rolleiflex Sl35 E Lens Mount Sony E Mount Lenses Sri Lanka