PENTAX DSLR/SLR CAMERA LENS ADAPTER FOR 23 and 30 mm EYEPIECE TUBE MICROSCOPES One end of adapter directly fits any Pentax DSLR/SLR cameras 2X Wide Field Design (similar to 10X eyepiece) Another end fits any of the microscopes with 23 and 30 mm ocular tubes Economical solution to take image from microscopes ocular tube Capture outstanding images 2X relay lens