CANON DSLR/SLR CAMERA LENS ADAPTER FOR 23/30 MM EYEPIECE TUBE MICROSCOPE One end of the adapter directly fits any Canon DSLR/SLR cameras Another end fits any 23 mm & 30 mm I.D. eyepiece tube or phototubes 2X Wide Field Design (equivalent to 10X eyepiece) Economical solution to take image from microscopes ocular tube Capture outstanding images No video port required