hailangppp 发表于 2017-1-10 14:28
为什么你不发完整的呢？
Argus Cintagon 50mm f/2.8
Bell & 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 (#15324) Up to 770 cpm at the rear lens. (very early version) http://www_billead_com/canonfl/
Canon FL 50/1.8 I (#58233): Up to 450 cpm / 26 μSv/h at the back lens, up to 7 cpm / 0.4 μSv/h behind camera or at the lens barrel. (early version with graphic hyperfocal distance scale)
Canon FL 58/1.2 (#25516, #44528): Up to 180 cpm / 10 μSv/h at the back lens, up to 30 cpm / 1.7 μSv/h behind camera or at the lens barrel. ※※※※※※※
Canon FD 17mm f/4
Canon FD 35mm f/2.0 (versions from the early 1970's, concave; chrome filter ring)
Canon FD 55mm f/1.2 S.S.C. Aspherical (Measured at 46532 CPM @ front element; S.S.C non-Aspherical is not radioactive) ※※※※※※※
Canon (SUPER-CANOMATIC LENS) R 50mm 1:1.8 No.78xxx ※※※※※※※
Carl Zeiss Jena Pancolar 55mm f1.4 (measured at 2360 nSv/h)
Carl Zeiss Jena Pancolar 50mm f1.8 "Zebra"
Carl Zeiss Jena Biometar 80mm f2.8 " ...

trazer 发表于 2014-08-15 14:51

手机那是电磁辐射，无危害，最多有原子共振的加热效果，比方说微波炉；这Takumar镜头的是电离辐射，能量高能打断蛋白质链，危害大...

没钱买烟 发表于 2016-4-21 08:34
做个记录，以下老镜头都有比较强的辐射
难怪太苦玛做工这么好价格却这么便宜，原来是国外淘汰的辐射垃圾，都被便宜卖给中国了，太苦玛玻璃骚气的黄色光晕可不是什么好东西，是放射性元素衰变的颜色。
以下是测试过的有电离辐射的太苦玛镜头，是电离辐射，也就是核辐射，和手机的电磁辐射可不是一回事。珍爱健康，主动远离核辐射。

      SMC Takumar 20mm f/4.5
      SMC Takumar 35mm f/2.0 (Asahi Optical Co.)
      Super Takumar 35mm f/2.0 (Asahi Optical Co.)
      SMC Takumar 50mm f/1.4 (Asahi Optical Co.) ※※※※※※※ ※※※※※※※
      Super Takumar 50mm f/1.4 (only the latest version with 7 elements)
      SMC Macro Takumar 50mm f/4.0
      Super Takumar 55mm f/1.8 (Asahi Optical Co.)
      SMC Takumar 55mm f/1.8 (Asahi Optical Co.) ※※※※※※※ ※※※※※※※(not all)
      Super Takumar 55mm f/2.0 (Asahi Optical Co.) ※※※※※※※
      SMC Takumar 55mm f/2.0 (Asahi Optical Co.)
      SMC Takumar 85mm f/1.8 (Asahi Optical Co.)
      Super Takumar 6x7 105mm f2.4 (Asahi Optical Co.)
      Steinheil Auto-Quinon 55mm f/1.9 KE mount
      Tele-Takumar 6.3 300m ...

80末班车 发表于 2014-12-21 20:36

两码事

电离辐射和电磁辐射

hailangppp 发表于 2017-1-10 14:28
为什么你不发完整的呢？
Argus Cintagon 50mm f/2.8
Bell & 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 (#15324) Up to 770 cpm at the rear lens. (very early version) http://www_billead_com/canonfl/
Canon FL 50/1.8 I (#58233): Up to 450 cpm / 26 μSv/h at the back lens, up to 7 cpm / 0.4 μSv/h behind camera or at the lens barrel. (early version with graphic hyperfocal distance scale)
Canon FL 58/1.2 (#25516, #44528): Up to 180 cpm / 10 μSv/h at the back lens, up to 30 cpm / 1.7 μSv/h behind camera or at the lens barrel. ※※※※※※※
Canon FD 17mm f/4
Canon FD 35mm f/2.0 (versions from the early 1970's, concave; chrome filter ring)
Canon FD 55mm f/1.2 S.S.C. Aspherical (Measured at 46532 CPM @ front element; S.S.C non-Aspherical is not radioactive) ※※※※※※※
Canon (SUPER-CANOMATIC LENS) R 50mm 1:1.8 No.78xxx ※※※※※※※
Carl Zeiss Jena Pancolar 55mm f1.4 (measured at 2360 nSv/h)
Carl Zeiss Jena Pancolar 50mm f1.8 "Zebra"
Carl Zeiss Jena Biometar 80mm f2.8 "Zebra" "(Only P6 mount version )
Carl Zeiss Jena Flektogon 50mm f4 "Zebra" "(Only P6 mount version ) ※※※※※※※
Carl Zeiss Jena Flektogon 35mm f2.8 (source?)
Carl Zeiss Jena Prakticar 50mm f1.4 (1st version with engravings around the outer side of barrel)
Carl Zeiss Tessar 80mm f/2.8 (old silver Hasselblad version https://www.※※※※※※※.com/watch?v=dKyc4LIIB6c)
Focal (Kmart store brand) 35mm f/2.8
Fujica Fujinon 19mm f/3.5 EBC (Arkku at mflenses_com)
Fujica Fujinon 35mm f/1.9 EBC (Arkku at mflenses_com)
Fujica Fujinon 50mm f/1.4 non-EBC early style = non-uniformly segmented focusing ring (measured at 35137 CPM @ back element)
Fujica Fujinon 50mm f/1.4 EBC early style = non-uniformly segmented focusing ring ※※※※※※※ (unspecified EBC or not)
Fujica Fujinon 100mm f/2.8 EBC (Arkku at mflenses_com)
Fujica Fujinon 400mm f/4.5 EBC (Arkku at mflenses_com)
Fujica Fujinon 600mm f/5.6 EBC (Arkku at mflenses_com)
GAF Anscomatic 38mm f/2.8 (GAF Anscomatic 726 camera)
Industar 61 L/Z MC (L is for Lanthanum - radioactive element)
Kodak Aero-Ektars (various models) ※※※※※※※
Kodak Ektanon 4-inch Projection Lens f/3.5
Kodak Instamatic M24/26 Super 8 Camera ※※※※※※※
Kodak Ektar 80mm f/2.8 (for Hasselblad 1600F and 1000F, made 1948-1950)
Kodak Ektar 135mm f/3.5 (for Hasselblad 1600F and 1000F, made 1949)
Konica Hexanon AR 50mm f1.4 (smallest aperture 16; green AE marking)
Konica Hexanon 57mm f1.2 ※※※※※※※
Konica Hexanon 21mm f4 SN 7029XXX, primarily thorium and thorium decay products
Leica 50mm f/2 Collapsible Summicron ※※※※※※※
Mamiya/Sekor 55mm f/1.4 (m42, chrome+black, flat rear element) (Measured by specialists, 25th april 2014 @ Poissy, France: from 5 to 10 μSV/h by direct touch & 1720 CPM).
Mamiya/Sekor SX 55mm f/1.8 6,8 μSV/h https://youtu.be/DZeqOwv00jI?t=4s
Mitakon (Zhongyi) 50mm f0.95 Ver I Speedmaster （4 Lanthanum optic elements)
Mitakon (Zhongyi) 50mm f0.95 Ver II Dark Knight（1 Lanthanum optic element)
Nikkor 35mm f/1.4 (early variant with thorium glass elements)
Olympus Zuiko MC Macro 20mm f/3.5 (http://www.flickr.com/photos/s58y/6802092736/)
Olympus Zuiko Auto-S 1:1,2/55 mm (first version with thorium glass elements)
Olympus Zuiko Auto-S 1:1,4/50 mm (only first version "Silvernose" is Radioactive) ※※※※※※※
Olympus Zuiko Pen F 1:1.4/40mm (rear element)
Rikenon AUTO 55mm f/1.4 (22937 CPM rear element)
SMC Takumar 20mm f/4.5 (http://www.flickr.com/photos/s58y/6802092736/)
SMC Takumar 35mm f/2.0 (Asahi Optical Co.)
Super Takumar 35mm f/2.0 (Asahi Optical Co.)
SMC Takumar 50mm f/1.4 (Asahi Optical Co.) ※※※※※※※ ※※※※※※※
Super Takumar 50mm f/1.4 (only the latest version with 7 elements)
SMC Macro Takumar 50mm f/4.0 (http://forum_mflenses_com/radioactivity-of-old-manual-lenses-t25714.html)
Super Takumar 55mm f/1.8 (Asahi Optical Co.)
SMC Takumar 55mm f/1.8 (Asahi Optical Co.) ※※※※※※※ ※※※※※※※ (not all)
Super Takumar 55mm f/2.0 (Asahi Optical Co.) ※※※※※※※
SMC Takumar 55mm f/2.0 (Asahi Optical Co.)
SMC Takumar 85mm f/1.8 (Asahi Optical Co.)
Super Takumar 6x7 105mm f2.4 (Asahi Optical Co.)
Steinheil Auto-Quinon 55mm f/1.9 KE mount
Tele-Takumar 6.3 300mm (Asahi Optical Co.) http://jbmedia_zenfolio_com/tt300_63/he0cf60f#he0cf60f
Topcor RE GN 50/1.4 (Lanthanum glass [source? Lanthanum or Thorium?]) ※※※※※※※
Topcor UV 50mm f/2
Yashinon-DS 50mm f1.4 (Yashica) (Measured at 680 nSv/h)
Yashinon-DS 50mm f1.7 (Yashica) (Measured at 762 nSv/h)
Yashinon-DX 50mm f/1.4  (Yashica) (Measured at 1359 nSv/h)
Yashinon-DX 50mm f/1.8 (Yashica) ※※※※※※※
Yashinon-DS-M 50mm f/1.4 (Yashica) (Measured at 572 nSv/h)
Yashinon-DS-M 50mm f/1.7 (Yashica) (Measured at 798 nSv/h) ※※※※※※※
Yashinon-DS-M 55mm f/1.2 (Yashica) (Measured at 1056 nSv/h)
Yashinon-ML 50mm f/1.7 (Yashica) ※※※※※※※ (likely only the older design with 'YASHICA LENS ML 50mm 1:1.7 YASHICA MADE IN JAPAN' writings is radioactive)
Yashinon 55mm f1.2 (Tomioka) (also branded as Cosinon, Chinon, Tominon, Tomioka or Revuenon; Measured at 981 nSv/h)
Leitz Wetzlar Summicron 5cm f2 (M39)
Vivitar Series 1 28mm f1.9
Voigtlander 50mm Nokton Prominent
Wollensak Raptar 28-75mm f2.3 ※※※※※※※
Zenitar-M 50mm f1.7 (Lanthanum glass)
Lenses with elements made of contaminated glassEdit
Some lenses of the 1960s have elements made of glass sorts which include small traces of radioactive rare-earth elements. Sometimes this accidental radioactivity causes a significant yellowing of these lens elements. Some users of such lenses reported in camera blogs that they healed the yellowing by exposing these lenses to the ultraviolet light of the sun. The procedure needs several days of sunny weather to have a positive effect. Lens elements with such yellowing radioactive impurity are in the following lenses:

Minolta MC W. Rokkor-SI 1:2.5 28mm (early variant, before radioactive glass impurity could be banned)
Minolta MC Rokkor-PG 1:1.2 58mm (early variant, before radioactive glass impurity could be banned)
Minolta MC Rokkor 1:1.7 85mm (the earliest variant of the MC line) http://www_dg77_net/photo/x500/mc85.htm
The healing of yellowing by sunlight is also reported for some lenses with thorium glass elements, for example for the Nikkor 35mm f/1.4 lens and the Super Takumar 50mm f/1.4 lens.