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[8] [9] [10] Stephen Gandy notes the "Nokton was one of the very best fast lenses of the 50's, even a good performer by today's standards." [ 11 ] The initial set of accessory lenses, the Ultragon wide-angle and the Telomar telephoto, were each attached to a reflex housing to assist focus; the Telomar also was designed by Tronnier.
Optional Lens hood LH-10 50mm f/1.5 Nokton 6 elements in 5 groups 10 45,7 mm silver 293 g, black 220 g 49 mm lens hood included, rangefinder can be combined [34] 50mm f/2.0 APO-Lanthar aspherical 10 elements in 8 groups 12 53,0 mm 288 g 49 mm Optional Lens hood LH-13, rangefinder can be combined. 50mm f/3.5 Heliar 5 elements in 3 groups 10
Nokton, [8]: 5 the fastest asymmetric double Gauss lens offered by Voigtländer, comparable to Ludwig Bertele's Ernostar, the Leitz Summilux, and Zeiss Sonnar. Ultragon, [8]: 16–17 an asymmetric design coupling the front half of a Topogon with the rear half of a double Gauss design. Telomar, [8]: 18–20 a telephoto derived from the Heliar.
The Micro Four Thirds system (MFT) of still and video cameras and lenses was released by Olympus and Panasonic in 2008; lenses built for MFT use a flange focal distance of 19.25 mm, covering an image sensor with dimensions 17.3 × 13.0 mm (21.6 mm diagonal).
English: Voigtländer Nokton f1,4/58mm SL II lens; made by Cosina, Japan Deutsch: Voigtländer Nokton f1,4/58mm SL II Objektiv; Hergestellt von Cosina, Japan Date
These new lenses included 35–80 mm f /4–5.6 (with built-in lens cap), 80–200 mm f /4.5–5.6, 35–105 mm f /3.5–4.5, 70–210 mm f /3.5–4.5, and 100–300 mm f /4.5–5.6. [ 4 ] Some of the original lenses were updated and re-released with the same cosmetics and are known as "New" or "Restyled" versions; minor optical updates such as ...
35 mm equivalent focal lengths are calculated by multiplying the actual focal length of the lens by the crop factor of the sensor. Typical crop factors are 1.26× – 1.29× for Canon (1.35× for Sigma "H") APS-H format, 1.5× for Nikon APS-C ("DX") format (also used by Sony, Pentax, Fuji, Samsung and others), 1.6× for Canon APS-C format, 2× for Micro Four Thirds format, 2.7× for 1-inch ...
Examples of lenses with this type of preset aperture control are the Nikon PC Nikkor 28 mm f /3.5 and the SMC Pentax Shift 6×7 75 mm f /4.5. The Nikon PC Micro-Nikkor 85 mm f /2.8D lens incorporates a mechanical pushbutton that sets working aperture when pressed and restores full aperture when pressed a second time.
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