Canon fl 55mm f1.2 lens radioactivity
http://forum.mflenses.com/canon-fl-58mm-f-1-2-t40167.html WebOct 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.
Canon fl 55mm f1.2 lens radioactivity
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WebDec 13, 2013 · Because of its fast f/1.2 speed, it provides high image quality in low light level photography. Additionally, this lens incorporates the Floating System which enables aberration-free shooting at close subject distance. Thus, a sharp image is obtained through the entire focusing range. 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, …
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 …
Webキャノン Canon FT QL LENS FL 55mm 1:1.2 です。 実際に撮影しての動作確認をしておりませんのでジャンク扱いでお願いいたします。 シャッターはきれました。 シャッタースピードも変わります。 レンズは比較的綺麗だと思いますが、レンズ表面右側に点状の傷が二か所見られます。(写真参考） その ... WebBell & Howell Director Series (Model 1208?) XL Super 8 movie camera; Zoom Lens f: 1.2 \ F: 9-22.5 mm. Canon FL 50/1.4 (very early version) Canon FL 50/1.8 I . Canon FL …
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.
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 … bob cancelledWebAug 23, 2024 · Like all other lenses, I tested the Canon FD 55mm f1.2 and found that it is not radioactive. Price Original Price 50,000 Japanese yen in 1973, which is … bob candiesbob canfield attorneyWebThe front element is yellow but this one is not radioactive like the 58mm f1.2. It's clear inside so no UV treatment necessary. Stopped down and this monster can get quite … bob camp ren and stimpyWebJan 10, 2011 · Radioactive Lens -- Canon FD 55mm f/1.2 S.S.C. Aspherical 14,811 views Jan 10, 2011 41 Dislike uyt384 383 subscribers This video shows the radioactivity from a Canon FD 55mm... clinton county kentucky animal shelterWebJun 16, 2024 · Re: Canon FD 55/1.2 chrome nose question. In reply to Goethe • Jun 16, 2024. The FL 55mm F1.2 is NOT radioactive. However, the FL 58mm F1.2 was. The … bob caninWebWe absolutely love creative photography. Discover a huge range of cameras, lenses, accessories and films to experiment with. Become part of our fun community, share your … bob candy canes