Canon fl 55mm f1.2 lens radioactivity
WebSince it was made convertable to EOS without optical elements and infinity focus lost - it became strong alternate to EF 50 f/1.2 lense. The only converter solution for now is the "EdMika Canon FL 55mm 1:1.2 EF/EOS Conversion Kit" - it was designed specially for this lens and doesn't changes the lens itself. Like a number of other contemporary lenses, the Canon FD 55mm ƒ/1.2 AL incorporated thoriated glass, a kind of optical glass that is doped with thorium dioxide. The inclusion of this compound makes the glass radioactive. Over time, thorium decay causes F-centers to form in the glass, resulting in an amber discoloration. The discoloration can be repaired by exposure to a source of ultraviolet radiation, …
Canon fl 55mm f1.2 lens radioactivity
Did you know?
WebJan 27, 2024 · By far the most prolific producer of radioactive lenses was Eastman Kodak. ... Canon FL 50mm f/1.8; Canon FD 55mm f/1.2; Canon FL 58mm f/1.2; Canon FD 35mm f/2.0 (versions from the early 1970's) Carl Zeiss Jenna Flektogon 35mm f/2.8; Ernst Leitz GmbH Wetzlar Summicron f=5cm 1:2 (collapsible, M39) WebDec 31, 2024 · The lens is lighter, but the minimum focus distance is increased to 55 cm, and the aperture half stops are gone. Optical properties and lens schematics are the same. Hexanon 50mm f1.7 AR Specifications Taking angle: 46 degrees Construction: 6 elements, 5 groups Minimum focus distance: 18 in / 45 cm (55 cm in later version) Focusing: Manual
WebJul 19, 2024 · This was actually true of a number of top-of-the-line lenses at the time such as the Canon FL 58mm f/1.2, the SMC Takumar 50mm f/1.4, the Konica Hexanon 57mm f/1.2 and many more. The source of radioactivity stems from the thorium added to the glass to improve the optical qualities while also keeping them smaller and lighter. WebThese lenses have been employed in a variety of applications including television cameras, 35 mm cameras, military optics, microfilm readers and aerial cameras. The production of such lenses seems to have ended in the late 1980s. Camera lenses known to have contained thorium include: Canon FL 58mm f1.2
WebJun 10, 2024 · The lens is a 7 element in five groups design based on a pre WWII Zeiss design. Canon added 4 high diffraction glass elements to improve spherical abberation … WebMay 3, 2013 · A radioactive Canon FD 55mm f/1.2 lens. The real threat comes from thorium eye pieces, which are much more rare but would be very close to a very sensitive area. However, ...
WebCamera lenses known to have contained thorium include: Canon FL 58mm f1.2; GAF Anscomatic 38mm f2.8 (Anscomatic 726 camera) Kodak Ektanar 38mm f2.8 (Instamatic …
WebLens Mount: FL: Lens: 55mm f/1.2: Random Canon FL 55mm f/1.2 Samples from 105 available Photos more. Comments All photos are copyrighted and may not be used … cannot find the network host dahua nvrWeb22K views 12 years ago. Radioactive Canon 55mm f/1.2 lens -- radioactivity as measured by a simple geiger counter is compared to other common household items: Waterford … cannot find the innova startup templatesWebGet the best deals on Canon FD f/1.2 Camera Lenses 55mm Focal when you shop the largest online selection at eBay.com. Free shipping on many items Browse your favorite … cannot find the original signerWebOct 12, 2024 · The lens had a hand-made aspherical element ("AL"-part of the name), so a little crisper than the standard f1.2 at the time, I suppose. I have the FL 55mm f1.2 myself, and don't care about the lack of sharpness, wide open. The only reason I find it worthwhile to keep in my lens collection, is the lovely rendering. cannot find the host elementWebSince it was made convertable to EOS without optical elements and infinity focus lost - it became strong alternate to EF 50 f/1.2 lense. The only converter solution for now is the … cannot find the public key matching useridWebCanon FL 55mm F/1.2 Standard prime lens • Film era • Discontinued Abbreviations FL The lens is designed for Canon 35mm film SLR cameras with the Canon FL mount. Production details Model history (5) Features … cannot find the remote serverWebAug 27, 2024 · However, I will say that the Canon FL 55mm f/1.2 is my favorite "budget" f/1.2. The later FD versions are probably at least comparable optically, although build quality on the FLs is actually a tad better. ... Canon 55mm f/1.2 S.S.C. AL is a siblig of Canon K35 55mm T1.3 lens, same optics, probably same coatings. K35s are hell expensive. Paying ... can not find the script file