Vintage Meyer-Optik Gorlitz Trioplan 100mm f/2.8

Originally built by the German company Meyer-Optik Görlitz in the mid-20th century, the vintage Trioplan lacks modern multicoating and electronics. Instead, it relies on its mechanical simplicity and the absence of cemented elements, meaning the lens is immune to aging-glue issues often found in older vintage glass.  The defining characteristic of the lens is its rendering. By keeping the aperture wide open at f/2.8, the triplet design yields a sharp center surrounded by bright, distinct circular rings in the out-of-focus areas, famously known as soap bubble bokeh. This glowing, artistic visual quality has made it highly sought after by portrait and macro photographers.  This copy is in particularly good condition. This lens, serial number 2078537 was manufactured in 1960.  The barrel of the lens is bright and shiny aluminum with only a tough of oxidation. The photos make is look like more oxidation that seen with the naked eye. The focus ring is just a touch snug but moves quite easily and smoothly. The exposure ring moves smoothly.  The glass is very clear with no scratches or cleaning marks.  There is no haze, fungus, separation or noticeable dust.  There is no oil on the 15 blades. It produces a beautiful image with the incredible bubble bokeh that it is known for.    This lens has been converted from an Exacta mount to an M42 mount with an M42 adapter.  The adapter was adhered to the lens with a flexible adhesive but can easily be removed with a razor blade and a littl