Summicron 25. 0mm LEICAHistory. The Summicron lens was introduced in 1. Leica M camera, that came in 1. The Summicron design started in 1. Summitar. In those days, the available optical glasses restricted the designer in his wishes for ever better image quality. They had to use different methods to crate improved imagery. One of the tricks is to split a lens element in two separate elements. Then the incoming rays can be bend more smoothly when traveling through the glass. The Summitar design has two lenses in the front group, consisting of cemented elements. The first one was splitted into separate lenses distance of the air lens was 0. Leica M and R Serial Numbers created by dethswatch M2. Summicron 50 for a Sony A7R Get the Leica R Summicron 50mm. Leica Tech Data 50mm f2 SummicronM. Ken Rockwell 50mm. SummicronM Serial Numbers. SN Start SN End Product Year Total 2909101 2913100. Web Site devoted to collecting and using Antique and Classic Cameras. Leica 50mm SummicronM Lens Price. Serial s for the screw mount started at. Find great deals on eBay for leica serial numbers. Download Program Adobe Flash Cs3 Serial Number. Shop with confidence. Leica 50mm Summicron ReviewBK7 had a too low index of refraction. In 1. 94. 7 there is a new design where the front element has a higher index. Leica SummicronM 50mm f2 A classic lens in its best form. See how the Leica 90mm 2. Summicron M fares on Sonys A7 series. I once tested the 50mm 2. According to the serial number it seems that its one from 1977. Leica Camera AG is an internationally operating, premiumsegment manufacturer of cameras and sport optics products. Summicron Vs Summilux' title='Summicron Vs Summilux' />SK2. In 1. 94. 9 the final design was derived with a smaller diatance between the front elements 0. Chance Brothers in England. This glass SBC had a thorium oxide in its formula and was slightly radio active. In 1. 95. 4 the Glass lab of Leitz and Schott created a new glass with the same properties and without the thorium oxide this is the wellknown La. K9. The first generation of the Summicron had a collabsible mount and a narrow throat as it should fit the thread mount cameras. Already in 1. 95. Leitz designers were working on a second generation lens, that came available in 1. Summicron Rigid. The Summicron Rigid. Power Iso Magic Disk Mac'>Power Iso Magic Disk Mac. The second design had a larger distance between the front element 1,5. This lens has very good image quality, but suffers from flare veiling glare and secondary reflections, probably caused by the thin air lens and the quality of the coating. The complex mount may be a problem too. The Sumcron Rigid and DR are identical in their optical cells and have identical performance. At wider apertures contrast is on the low side, and resolution is reduced too. In theory one can have a very small central spot giving high resolution and a wide circle of halo around the spot, giving low contrast. If one could develop the film such that the circle of halo is suppressed by a very steep characteristic curveexample document films as Agfa Copex, resolution may be increased. But for pictures with the normal tonal scale and gradation this option is not possible. Summicron generation 2 has less definition than the successors. But stopped down to 1 4 and smaller, the Summicron Rigid can still compete with current designs. Even if it cannot win the contest, is is a redoubtable contender. The reputation of the Summicron Rigid is based in part on the excellence of the mechanics of the mount. This is indeed impressive and may be seen as a classical example of design overkill. It is very solid and gives the impression of eternal functional life. The accuracy of the mounting and and of the parts is probably not as good as the current versions. See below. The 5. Summicron version. Optically this version is identical to the current version, introduced in 1. Generation 4. I compared a Summicron 3. Special Edition 3. Optically the current Summicron can still claim to be the worlds best 5. This is not the same as saying that the Summicron 5. You can use it without reservation at f. In some conditions, especially when you take pictures against a large, very clear sky, that functions as a large soft box, you can see some flare hot spots in the middle of the image. A comparison of the mount shows that the SE version has a different mount. The standard Summicron has an inner and an outer mount helix that both move relative to each other. In the new mount there are the same helix constructs, but now two pins fix and guide the movement. The SE version has a very smooth and even movement and its mechanical engineering is of a very high level. As example the infinity setting collimator check has an official tolerance of 0. This tolerance is often exceeded by Voigtlander and Konica lenses and to be honest, sometimes a Leica lens is close to the limit. The Summicron Rigids I tested had indeed tolerances that could be measured in a few hundreds of a mm. The SE version was within 0. That is 3 thousands of a mm and so a factor of 1. There will be of course a debate whether the Rigid version or the SE version is mechanically the best for choice of material and accuracy of machining the SE wins. But the deep satin glow of the Rigid finish has its own attraction. The current Summicron offers performance that exceeds the capabilities of most users. The SE version adds a retro look and will fit the MP seamlessly. On my M7 the SE looks very good and has some elegance the normal version lacks.