The 6 element Schneider 50mm Componon S is a one of the better enlarger lenses. This lens is an easy way for someone with a normal macro lens that wants to move beyond life-size or 1X magnification up to about 4X for a reasonable cost of less than $100. ...
photographing camera and the lens of a macro-projection composer, subjecting the lenses to the chromatic aberration correction suitable for a specific wide wavelength region and mounting a narrow wavelength filter to the reduction photographing camera and a wide wavelength filter to the macro-projection...