The well-made 6 elements in 4 groups Pentacon Auto MC 50mm 1:1,8, said to be a direct descendant of the equally acknowledged Meyer-Optik Görlitz Oreston 50mm 1:1.8, is a compact full-frame lens with an unusually close focus distance of 33 centimeters. The lens has a slightly rounded 6-blade diaphragm, measures 60mm in diameter, and 38mm in length, weighs 194 grams, and takes 49mm filters. This lens is also well known for its 'soap bubble' characteristics, with strong and sometimes harsh outlines, and seen as swirls on others. the lens has also enjoyed its moment as a 'cult classic', appreciated for the bokeh effect and its very delightful and pleasant colors as seen on both film and digital.
Though optically identical, but with no multi-coating of the older versions, the lens was seen with four iterations over its production run, with the oldest version having silver stripes on the aperture ring branded either “electric” or “auto”. This was followed by the second version which has no stripes on the aperture ring but has two silver rings at the front of the lens. The third version has one silver ring at the front, and the focus ring of the third version has a spiked profile. The last version is all black. A late version with a PB mount is also available. The lens enjoys a Sharpness rating of 9, Aberrations at 8.3, Bokeh at 10.0, Handling at 8.7, and Value at 10 on PentaxForums.
These first impression images with the Pentacon Auto MC 50mm 1:1.8 are shot with the lens mounted on a Canon EOS 300D. Both camera and lens are vintages, of course, with the M42 mount Pentacon produced from 1971 to 1978 from the factory outside of Dresden, in Germany, while the Canon EOS 300D (EOS Digital Rebel in the US, EOS Kiss Digital in Japan, and also sold as the DS6041) was the first entry-level digital SLR camera introduced by Canon, Japan in 2003. The camera is fitted with a 6.3MP APS-C-sized CMOS sensor.
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