For PhaseOne IQ3 100M: Carl Zeiss S-Topar A2 2/80mm Ultra High Resolution lens
Like New ! ! !Sharpest lens you ever had for medium format ! ! !Now for use with electronic shutterPhaseOne IQ3 (101 Megapixel on 40 x 54mm ) Extremly high resolution high contrast reconnaissance lens manufactured by Carl Zeiss Oberkochen I just want to mention that the days of cheap Topars a gone. Now, with
Like New ! ! !Sharpest lens you ever had for medium format ! ! !Now for use with electronic shutterPhaseOne IQ3 (101 Megapixel on 40 x 54mm ) Extremly high resolution high contrast reconnaissance lens manufactured by Carl Zeiss Oberkochen I just want to mention that the days of cheap Topars a gone. Now, with the release of the 101 megapixel sensor PhaseOne IQ3 with electronic shutter the S-Topar A2 2/80mm is able to show its outstanding performance. However, with each new sensor generation, it will unroll its extraordinaryoptical power more and more.I will rise the selling price from month to month, ending up to its original price.If you already own one, keep it. If you intend to buy one, do it now. Important to know : since the back focal distanceis just 25,5mm, it is just for use with mirrorless cameras ! And please have in mind that, causedby its exotic design, the large section of the Toparhas to face to the sensor / film !I added two pictures showing its original triple mounting in the camera. Designed for 72x72mm image size, image circle 110mm. Yes, it has an iris, and yes, it has an image circle of 110mm at infinity , in a distance of 25,5 mm from rear element ( like Hasselblad SWC )The military reconnaissance camera ( still in use ) has an image of 72 x 72 mm ( diameter 102 mm ).I tested the 110 mm image in my optical lab., but I also found, that the total illuminated image on the focusing screen has an diameter of 136 mm.I did not test the performance wider than 110 mm, but on the screen it looks pretty sharp. Since it was designed for infinity, its performance closer than 10 meters is lower than above 10 meters. However, I am suggesting 6×7 format, and here the the resolution will outperform the next sensor generations for more than 20 years. On analog film you will be able to produce more than 1 GIGAPIXEL ! Back focal distance 25,5mm ( distance from rear barrel edgeto the focal plane at infinity. Please have in mind, that theseaerial reconnaissance lenses are the latest state of the artin high resolution optical design, highly specialized in highcontrast imaging power, never avalable for civilian markets. The best lens you can get for 6×7, ever. Original cost : over 20,000 $ More info ( aerozeiss ( at ) t-online.de )See also my ebay listing at aerozeiss2 !