This is a brand new microscope adapter for Canon PowerShot G10, G11, G12 digital camera. This set includes a 4X lens, a 58mm-52mm thread extended lens adapter and a 58mm lens adapter tube. The microscope adapter fits most microscopes with standard 23.2mm eyetube or phototube. With optional 23.2mm-30.0mm or 23.2mm-30.5mm microscope adapter, it can be used for stereo microscopes.