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There are a significant number of lenses produced from the 1940s through the 1970s that are measurably radioactive. Main source of radioactivity is the use of thorium oxide (up to 30% by weight) as a component of the glass used in the lens elements. Thorium oxide has a crystalline structural similar to calcium fluoride (fluorite). Like fluorite, its optical properties of high refractivity and low dispersion allows lens designers to minimize chromatic aberration and utilize lenses of lower curvature, which are less expensive to produce. Contrary to often seen statements to the otherwise, lenses containing lanthanum are not appreciably radioactive – lanthanum is only 1/10,000th as radioactive as thorium. Radioactivity in lanthanum containing lenses is due to the intentional inclusion of thorium in the optical glass mix. The presence of thorium can sometimes, depending on the mixture of other elements in the lens, cause moderate to severe browning of the lens elements.

Radiation Levels

典型的辐射水平在镜头元素的表面可以达到10毫西弗/小时(100微米/小时),随着距离的增加而大幅下降;在3英尺(90厘米)的距离上,辐射水平很难在典型的背景水平上探测到。作为参考,一个典型的胸部X光片由大约10先生,往返越野飞行暴露了旅客5先生,和全套 牙科X射线 暴露病人10先生40mr。

Typical radiation levels can approach 10 mR/hr (100 μSv/h) as measured at the lens element’s surface, decreasing substantially with distance; at a distance of 3 ft. (.9 m.) the radiation level is difficult to detect over typical background levels. For reference, a typical chest x-ray consists of about about 10 mR, a round-trip cross country airline flight exposes a passenger to 5 mR, and a full set of dental x-rays exposes the patient to 10 mR to 40mR.

Most smaller lenses with thorium elements are not very dangerous. However, thorium eyepieces are dangerous. They can give a very large alpha and beta particle dose to the cornea of the eye, causing cataracts and other problems. Normally these particles are stopped by skin, but the surface of the eye is quickly damaged by them, and at close range, the dose can be very high.




福伦达珠戒竟然有辐射(Voigtlander Skoparet 35mm 3.4)

Kodak Lenses

到目前为止,生产最多的放射性镜头是伊士曼·柯达。从20世纪40年代到60年代,业余相机的大量生产和销售(含钍钍氧化物)的镜头,包括一些对 小马, 图章,高端 傻瓜 (例如800和 814,而不是100或124  ) 相机。此外,很多专业级艾克塔镜头从这个时代包含钍。也许最著名的放射性的镜头都ektars 柯达航空。
奇怪的是,在他著名的书, 一摄影镜头的历史,鲁道夫·京斯莱克(伊士曼柯达镜头设计部门1937-1968头),只有一个路过的评论使用柯达眼镜可能使钍。

By far the most prolific producer of radioactive lenses was Eastman Kodak. From the 1940s through the 1960s, substantial numbers of amateur cameras were produced and sold with thoriated (containing thorium oxide) lenses, including some of the PonySignet, and high end Instamatic (e.g. 800 and 814, but not 100 or 124) cameras. In addition, many professional level Ektar lenses from this era contain thorium. Perhaps the most famous radioactive lenses of all were the Kodak Aero-Ektars.

Curiously, in his notable book, A History Of The Photographic Lens, Rudolf Kingslake (head of the Eastman Kodak lens design department 1937-1968), makes only a single passing comment on the possible use of thorium in Kodak lenses.


Lenses Tested Radioactive (by the creator of this page) 


Lenses Tested Radioactive (elsewhere, or by contributors to this page) 

    • Argus Cintagon 50mm f/2.8
    • Agfa Color Solinar 2.8/50 (serial S51644): ~70cpm at the front
    • Agfa Solinar 50mm f/2.8 (Agfa Karat 36, front element group, serial S01812): 385CPM/2.4 uSv/h (front), ~100CPM/0.7 uSv/h (rear)
    • 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) billead.com (archive)
    • 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) billead.com (archive)
    • 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. billead.com (archive) YouTube
    • Canon FD 17mm f/4
    • Canon FD 35mm f/2.0 (versions from the early 1970’s – concave front element)
    • Canon FD 50mm f/1.2 L (Early versions)
    • Canon FD 55mm f/1.2 S.S.C. Aspherical (Measured at 46532 CPM @ front element; S.S.C non-Aspherical is not radioactive) YouTube
    • Canon (SUPER-CANOMATIC LENS) R 50mm 1:1.8 No.78xxx YouTube
    • Carl Zeiss Jena Pancolar 55mm f1.4 (measured at 2360 nSv/h)
    • Carl Zeiss Jena Pancolar 50mm f1.8 “Zebra” (1964-67, up to serial number 8552600)
    • Carl Zeiss Planar 80mm f/2.8 (Rolleiflex 2.8D, taking lens: rear element measured at 0.12-0.18 uSv/h, serial 1242942) Note: This is in the normal natural radioactive range > no radiactive material in the objektive used
    • Carl Zeiss Sonnar 180mm f/4.8 (for Linhof Super Technika IV 6×9; rear element measured at 0.65-0.7 uSv/h)
    • Carl Zeiss Jena Biometar 80mm f2.8 “Zebra” “(Only P6 mount version )
    • Carl Zeiss Jena Flektogon 50mm f4 “Zebra” “(Only P6 mount version ) YouTube Measured 2.5-3.0 µSV/h YouTube
    • Carl Zeiss Jena Flektogon 50mm f4 “Pre-Zebra” (Only P6 mount version) Measured 23.6 uSv/h YouTube
    • 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 YouTube)
    • Enna München Lithagon 1:3.5 35mm (M42) (DCC.de)
    • 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 YouTube (unspecified EBC or not)
    • Fujica Fujinon 100mm f/2.8 EBC (Arkku at mflenses.com)(YouTube)
    • 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)
    • Heinz Kilfitt 40mm f/2.8 Makro-Kilar (all variants)
    • Heinz Kilfitt 90mm f/2.8 Makro Kilar (all variants)  Kilfitt 90mm F2.8有三个系列,特别是219 243 301  辐射情况 219全部有辐射,243早期有辐射 后期没有辐射,最后的301编号开头的没有辐射.(陈奇军)
    • Kodak Aero-Ektars (various models) YouTube
    • Kodak Ektanon 4-inch Projection Lens f/3.5
    • 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)
    • Kodak Instamatic M24/26 Super 8 Camera YouTube
    • Konica Hexanon AR 50mm f1.4 (smallest aperture 16; green AE marking)
    • Konica Hexanon 21mm f4 SN 7029XXX, primarily thorium and thorium decay products YouTube
    • Konica Hexanon 57mm f1.2 YouTube
    • Kinoptik Paris 12.5mm f/2.5 C mount S16 (tested up to 150 CPM, likely neutron contamination from NPP install)
    • Leica 50mm f/2 t Summicron YouTube
    • Leitz Wetzlar Summicron 5cm f2 (M39)
    • 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 58mm f/1.7 (M42 version) – 1.19 µSV/h (Lenslegend)
    • Mamiya/Sekor SX 55mm f/1.8 6,8 µSV/h YouTube
    • Minolta MC W. Rokkor-SI 1:2.5 28mm (early variants)
    • Minolta MC Rokkor-PG 1:1.2 58mm (early variants only; SN 2571225 and later should be non-radioactive)
    • Minolta MC Rokkor 1:1.7 85mm (the earliest variant of the MC line) Dominique Guebey Jungle Photographie
    • Mitakon (Zhongyi) 50mm f0.95 Ver I Speedmaster (4 Lanthanum optic elements)
    • Nikkor 35mm f/1.4 (early variant with thorium glass elements)
    • Olympus Zuiko MC Macro 20mm f/3.5 (s58y Flickr)
    • 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) YouTube
    • Olympus M-System G.Zuiko Auto-W 28mm F3.5 (early model) (YouTube)
    • Olympus Zuiko Pen F 1:1.8/38mm (rear element, measured at approx. 7.5µSV/h or 26 µSv/h digicamclub.de)
    • Olympus Zuiko Pen F 1:1.4/40mm (rear element)
    • Porst Color Reflex MC Auto 1:1.2/55mm (only a specific version? another copy reported as non-radioactive) #000670 – 37µSv/h digicamclub.de
    • Porst Color Reflex MC Auto 1:1.2/55mm (f22 version-Tomioka serial until 00xxxx. #000543-10µSv/h #000543 Instagram
    • Rikenon AUTO 55mm f/1.4 (22937 CPM rear element)
    • Rodenstock XR-Heligon f/0.75 50mm: (5µS/h in 10 cm from front lens. Note: this lens was listed as non-radioactive. It might be that my sample was activated during usage in the X-Ray machine.)
    • Schneider Repro-Claron (Voigtländer Large Format Lenses from 1949-1972)
    • Schneider Kreuznach Retina-Xenon C 50mm f/2.8 (Kodak Retina IIc front lens, serial 3962395): measured at ~140CPM/.95 uSv/h
    • Schneider Xenotar 80mm 2.8 (Rolleiflex 2.8C,1954) – 2 µSV/h on front element surface, 0.4 at 10cm, negligible at 20cm.
    • Schneider 135mm f/3.5 Xenotar (Voigtländer Large Format Lenses from 1949-1972)
    • SMC Pentax 50mm f/1.4 (original “K line”) YouTube  (result confirmed on a second K-mount lens, serial #1034094)
    • SMC Takumar 20mm f/4.5 (s58y Flickr)
    • SMC Takumar 35mm f/2.0 (Asahi Optical Co.)
    • Super Takumar 35mm f/2.0 (Asahi Optical Co.)
    • Super Multi Coated Takumar 50mm f/1.4 (Asahi Optical Co.) (both knurled and rubber focus ring grip versions) YouTube
    • Super Takumar 50mm f/1.4 (All 7-element variants contain Thorium – thoriated glass!, no 8-element variants contain thorium.)
    • Super Takumar 50mm f/1.4 – 8-element version
    • 与通常的看法相反,早期的8元素超级塔库玛(Super Takumar)也具有放射性:https : //www.youtube.com/watch?v= yqLv6ngbJ7Y 除了这里显示的镜头之外,我还测试了2个其他镜头的β和γ粒子,从而获得了读数在后面的速度高达约1.2-1.35 µSv / h,在前面的速度约为0.2 µSv / h(背景辐射约为0.14 µSv / h)。所有3个镜头都经过验证,属于8元素类型:除了具有所有外部特征之外,我还为它们提供了服务,因此我可以要素。放射性元素在后面,而不是在前面。好消息是,数码相机后盖(例如,索尼Alpha 7RII)有效地阻止了来自后部的所有辐射。不幸的是,对于放射性更高的7元素镜片而言并非如此。
    • 本文是关于镧或Thor的Alpha辐射,而不是Beta或Gamma辐射 [False。本文涉及所有辐射类型] 。您可能会对其他类型的辐射测试呈阳性,但这并不意味着它们都可以 [无意义。无法测试镜头的所有副本。如果您测试3份并发现它们全部具有放射性,那么可以断定该镜片具有放射性是明智的] 。其他几个收集者从其示例中检测到任何形式的零辐射,请不要过分概括 [这些“收集者”是谁,这些主张的证据在哪里?此页面应仅包含有证据支持的陈述]
    • 我的8个镜头也具有放射性。此处的视频-https :  //youtu.be/Spl5mUqAcOs
    • Contrary to common belief, the early 8-element Super Takumar too is radioactive: https://www.youtube.com/watch?v=yqLv6ngbJ7Y Besides the lens shown here, I have tested 2 others for beta & gamma particles, getting readings at the back of up to about 1.2-1.35 µSv/h and at the front of about 0.2 µSv/h (against a background radiation of about 0.14 µSv/h). All 3 lenses have been verified to be of the 8 elements type: besides having all external characteristics, I serviced them, so I could count the elements. The radiactive elements are those at the back, not at the front. The good news is that all radiation from the rear is effectively stopped by a digital camera back (e.g. Sony Alpha 7RII). This is unfortunately not the case for the much more radioactive 7-element lenses.
    • This article is about Alpha radiation from Lanthanum or Thorium, not about Beta or Gamma radiation [False. This article is about all radiation types]. Yours may test positive for other types of radiation, but that doesn’t mean that they all do [Nonsense. It’s impossible to test all copies of a lens. If you test 3 copies & find them all radioactive, it’s sensible to conclude the lens is radioactive]. Several other collectors have detected zero radiation of any kind from their examples, please do not over-generalize [Who are these ‘collectors’ and where is the evidence for these claims? This page should contain only statement supported by evidence]
    • My 8 elements is radioactive too. Video here – https://youtu.be/Spl5mUqAcOs
  • Macro Takumar 50mm f4.0 early 1:1 version (serial 790115), rear element approx 58 µSv/h digicamclub.de)
  • Asahi Super-Macro-Takumar 1:4/50 — serial number 335xxxx tested positive, but the lowest of my positive results so far
  • SMC Macro Takumar 50mm f/4.0 (MFLenses)(YouTube)
  • Super Takumar 55mm f/1.8 (Asahi Optical Co.)  (After approx. SN 1.5 million) YouTube
  • Super-Multi-Coated Takumar 55mm f/1.8 (Asahi Opt. Co.) (rear element, 8-10µSV/h)
  • Asahi Super Takumar 55mm f/1.8 (After approx. SN 1.5 million) — (Serial 3199041 this is actually radioactive YouTube)
  • SMC Takumar 55mm f/1.8 (Asahi Optical Co.) YouTube YouTube (not all)
  • Super Takumar 55mm f/2.0 (Asahi Optical Co.) YouTube
  • SMC Takumar 55mm f/2.0 (Asahi Optical Co.)
  • Super-Multi-Coated Takumar 85mm f1.8 (serial 5888634, front element only, not measurable at the back)
  • SMC Takumar 85mm f/1.8 (Asahi Optical Co.) (MFlenses)
  • Super Takumar 6×7 105mm f2.4 (Asahi Optical Co.)
  • Tele-Takumar 6.3 300mm (Asahi Optical Co.) (JB Media (archive))
  • Soligor 35mm f/2.8 (serial 17000xxx) YouTube
  • Steinheil Auto-Quinon 55mm f/1.9 KE mount
  • Taylor Hobson Rank Sopelem 8-26mm f/1.6 C mt. Zoom Greater than 250CPM 1.5 mSv/hr (danger)
  • Topcon RE GN Topcor 50/1.4 YouTube
  • Topcon UV Topcor 50mm f/2 (Measured at 283nSv/h)
  • Yashinon-DX 28mm f/2.8 (Yashica) (Measured at 210 nSv/h)
  • Yashinon-DS 50mm f/1.4 (Yashica) (Measured at 680 nSv/h)
  • Yashinon-DS 50mm f/1.7 (Yashica) (Measured at 762 nSv/h)
  • Yashinon-DX 50mm f/1.4 (Yashica) (Measured at 1359 nSv/h)(Not all)
  • Yashinon-DX 50mm f/1.8 (Yashica) YouTube
  • 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) YouTube
  • Yashinon-DS-M 55mm f/1.2 (Yashica) (Measured at 1056 nSv/h)
  • Yashinon-ML 50mm f/1.7 (Yashica) YouTube (Likely, only the older design with ‘YASHICA LENS ML 50mm 1:1.7 YASHICA MADE IN JAPAN’ writings is radioactive. This version is most probably a rebrand of DS-M 50mm f/1.7)
  • Yashinon 55mm f1.2 (Tomioka) (also branded as Cosinon, Chinon, Tominon, Tomioka or Revuenon; Measured at 981 nSv/h)
  • Vivitar Series 1 28mm f1.9
  • Voigtlander 50mm Nokton Prominent
  • Voigtlander 15cm Apo-Lanthar (measured at 16μSv/h: Voigtländer Large Format Lenses from 1949-1972)
  • Voigtlander 21cm Apo-Lanthar (measured at 27μSv/h: Voigtländer Large Format Lenses from 1949-1972)
  • Voigtlander 30cm Apo-Lanthar (measured at 35μSv/h: Voigtländer Large Format Lenses from 1949-1972)
  • Voigtlander Skoparex 35mm f3.4 (DKL mount)
  • Voigtlander Ultragon 115mm f/5.5 (measured at 1.5μSv/h: Voigtländer Large Format Lenses from 1949-1972)
  • Voigtlander Zoomar 36-82mm f2.8 (measured at 3.1 μSv/h, serial 5033439)
  • Wollensak Raptar 28-75mm f2.3 YouTube
  • Nikkor Lenses tested radioactive (Theoria Apophasis YouTube) and radioactivity measure:
  • 关于尼康镜头的放射性测试需要大家一起完善,毒镜测了了列表中的三个镜头没有发现辐射超标,同时测试了手头的常用的三十多个尼康镜头也没有发现超标过多的镜头,所以大家手头如果有列表的镜头可以测试一下。(备注:fandom百科原文已经删除了关于尼康放射镜头的列表,这里我们也注明删除)
    • Nikkor AiS 15/3,5 : 187
    • Nikkor AF 16/2,8 D : 185
    • Nikkor AFS 17-35/2,8 ED : 214 (rear)
    • Nikkor AiS 20/2,8 : 194
    • Nikkor-O 2,1cm f/4 : 199
    • Nikkor AF 24-120/3,5-5,6 D : 214
    • Nikkor Ai 25-50/4 : 23
    • Nikkor AF 28/1,4 D : 225 (front) 215 (rear) Nikkor Ai 28/2 : 211
    • Nikkor 28/2,8 (Nikon 28Ti) : 221 Nikkor AiS 28/2,8 : 178 Nikkor F 28/3,5 : 178 Nikkor PC 28/3,5 : 190 Nikkor F 35/2 : 229
    • Nikkor AiS 35/1,4 : 198 (front) 210 (rear)
    • Nikkor F 43-86/3,5 : 192 Nikkor F GN 45/2,8 : 178
    • Nikkor Ai 50/2 : 178
    • Nikkor AiS 50/1,8 : 178
    • Nikkor F 50/1,4 S : 178
    • Nikkor F 50/1,4 SC : 192 (front) 200 (rear)
    • Nikkor AF 50/1,4 : 191 (rear) 178 (front)
    • Nikkor F Micro 55/3,5 : 178
    • Nikkor Ai MIcro 55/3,5 : 191
    • Nikkor AiS Micro 55/2,8 : 178
    • Nikkor Ultra-Micro 55/2 : 212 (front) 204 (rear)
    • Nikkor AiS NOCT 58/1,2 : 211 (front) 183 (rear)
    • Nikkor AF Micro 60/2,8 : 199
    • Nikkor AF 85/1,8 : 178
    • Nikkor AiS 85/1,4 : 221
    • Nikkor AiS 105/1,8 : 211
    • Nikkor Ai 105/4 micro: 197
  • Wollensak Raptar 28-75mm f2.3 YouTube
  • Zenitar-M 50mm f1.7 (Lanthanum glass)
  • Leidolf wetzlar lordon 50 /2.8 旁轴镜头  (毒镜测试)
  • Fuji690 一代  105/3.5 镜头 辐射较高 (毒镜测试)
  • linhof Rodenstock 180mm f5.6 rotelar 辐射76U/H (摄影爱好者:Ali.banananannanana)
  • iscoramas 镜头、Iscorama 36 和 Iscorama 54 (没有具体的测试数据,据说辐射强度超过kodak,有谁有这个头的可以测试下)
  • canon Lens OM 50MM 1:1.9   后组 0.9uSV/h
  • carl zeiss  ikon super ikonta 533/16  zeiss-opton tessar T 80mm F2.8 Nr1115925  辐射5.2  uSV/h  红T和 白F标都有,成像明显优于无辐射(淋淋测试 )

Lenses Tested non-Radioactive  




  • Asahi Pentax-M 28mm f3.5 SMC Shift lens (serial 5144203)
  • Asahi SMC Pentax-M 35mm f/2.8 (serial 6381843)
  • Asahi SMC Pentax-FA 1:1.9 43mm Limited (relatively early “Made in Japan” version with presumably original “leaded” glass design. Serial 0006247. Later batches should not be radioactive either.)
  • Asahi SMC Pentax-K 50mm f/1.2 (serial 1451004)
  • Asahi Pentax-M 50mm f1.4 SMC YouTube
  • Asahi SMC Pentax-M 50mm f/1.7 (serial 2596025, 2650094)
  • Asahi Pentax-M 50mm f2 SMC (serial 4286229) YouTube
  • Asahi Super-Takumar 55mm F2 (Early version) YouTube
  • Asahi Super Takumar 55mm f/1.8 (Early version, Serial 802344)
  • Asahi SMC Takumar 55mm f/2.0 (Late version, Serial 8119078)
  • Asahi Auto Takumar 55mm f2.2 (serial 641779)
  • Asahi Auto Takumar 85mm f1.8 – aperture ring at the front, spring-operated auto aperture (serial 412250)
  • Asahi Pentax SMC 85mm f1.8 (serial 52285527)
  • Asahi Super-Multi-Coated Takumar 105mm f2.4, 6×7 format (serial 8259881)
  • Asahi Super-Multi-Coated Takumar 135mm f/2.5 (Serial 4968162, 5 Element version)
  • Asahi Super Takumar 135mm f3.5 (serial 3088850)
  • Asahi Super Multi Coated Takumar 135mm f3.5 (serial 4568738)
  • Asahi Super-Multi-Coated MACRO-TAKUMAR/6×7 1:4/135 (serial 8468869)
  • Asahi SMC Pentax-K 1:2.5/135 (serial 5379584)
  • Asahi SMC Pentax-M 135mm f/3.5 (serial 6429171)
  • Asahi Super-Multi-Coated Takumar 200mm f4.0 (serial 7161552)
  • Asahi Super-Multi-Coated Takumar 300mm f4.0 (serial 6923607)
  • Canon FL 35mm F2.5 (serial 78xxx)
  • Canon FL 50mm F1.4 (serial 168xxx)
  • Canon FL 55mm F1.2 Youtube
  • Canon FD 28mm f2.8 S.C. chrome mount ring (serial 233953)
  • Canon 50mm f1.8 Leica Screw Mount, late model, chrome-and-black (serial 256884)
  • Carl Zeiss Sonnar 85mm f/2.8 (“Made in West Germany”, Rollei QBM, serial 555345)
  • Carl Zeiss Planar 80m f/2,8 T* ,C-Version, black, (serial 5783145) for Hasselblad
  • EBC Fujinon 50mm f/1.4 (late version: diamond-texture, rubber focus ring, serial 537963). Warning: Other samples may be highly radioactive!
  • Helios 44M 58mm f2.0 (serial 8077187)
  • Helios 44M-4 58mm f2.0 (serial 8990138)
  • Helios 44M-6 58mm f2.0 (serial 92621308)
  • Hoya HMC Wide-Auto 24mm f/2.8 (serial 211453, also RMC Tokina etc.)
  • Industar 28mm f/2.8
  • Industar 52mm f/2.8 (Industar 61, Leica screw mount, non-L/D (Л/Д) version)
  • Konica Hexanon 135mm f/3.5 (serial 7322086)
  • Mamiya Sekor 55mm f/4.5 (C330 TLR, serials 74382/74610)
  • Mamiya Sekor 65mm f/3.5 (C330 TLR, serial 5790310, no second S/N)
  • Mamiya Sekor 80mm f/2.8 (C330 TLR, brown/yellowish coating, serials 672606/672341)
  • Mamiya Sekor Super 180mm f/4.5 (C330 TLR, serials 84462/85060)
  • Minolta MD Rokkor-X 50mm f/1.4
  • Mitakon Zhongyi 50mm f0.95 II ‘Speedmaster’ (serial 001525)
  • Olympus OM-System Zuiko Auto-S 50mm F1.4 (Late version, serial 1,15X,XXX) Youtube
  • Pentacon 135mm f/2.8 (Meyer Orestor Preset aperture non-MC version, serial 8477438)
  • Petri 55mm f/1.8 CC Auto (serial 691631)
  • Ricoh Color Rikenon 40mm f/2.8 (Rikoh 500GX, serial , could be slightly radioactive, but too low to be measured at my sample)
  • Ricoh Rikenon 400mm f/6.3 (serial 10443)
  • Rodenstock Retina-Eurygon f:4/35mm (DKL mount, Serial 4203237)
  • Rodenstock Heligon 50mm f/2 (Kodak Retina II, serial 2052276)
  • Rodenstock Retina-Heligon f:1,9/50mm (DKL mount, Serial 4471524, 4752831. Could be slightly radioactive, but too low to be measured.)
  • Rodenstock XR-Heligon f/0.75 50mm (serial 9723511). Another sample was measured to be radioactive (see above),
  • Rodenstock Retina-Rotelar f:4/85mm (DKL mount, Serial 4477941. Could be slightly radioactive, but too low to be measured.)
  • Rodenstock Retina-Rotelar f:4/135mm (DKL mount, Serial 4204704. Could be slightly radioactive, but too low to be measured.)
  • Rodenstock-Rotelar f:4/135mm (DKL mount, Serial 3712416. Could be slightly radioactive, but too low to be measured.)
  • Rollei HFT-Planar 50mm f/1.8 (made by Rollei Singapore, early/metal version, serial 1078508)
  • Rollei SL-Xenon 50mm f/1.8 (Schneider-Kreuznach, serial 11 870 983, 12 081 833, 12 186 091)
  • Rollei SL-Angulon 35mm f/2.8 (Schneider-Kreuznach, serial 12 620 084)
  • MC Rubinar makro 500mm f/5.6 (Russian mirror tele lens, serial 080007)
  • Schneider-Kreuznach Edixa-Curtagon 1:2,8/35 (serial 8900488)
  • Schneider Kreuznach Retina-Xenar 50mm f/3.5 (Kodak Retina Ia, serial 2216414)
  • Schneider Kreuznach Retina-Xenar C 50mm f/2.8 (Kodak Retina Ib, serial 4832242)
  • Schneider Kreuznach Retina-Xenar f:2,8/50mm (DKL mount, Serial 9596917)
  • Schneider Kreuznach Retina-Xenon 50mm f/2.0 (Kodak Retina II, serial 1982005)
  • Schneider Kreuznach Retina-Xenon C 50mm f/2.0 (Kodak Retina IIIC, serial 5347221). Other apterture version (f/2.8) is radioactive (see above)
  • Syoptic 50mm f/1.1 (E-mount version)
  • Tokina Wide-Auto (also applies to early Vivitar/Soligor auto wide: knurled metal focus ring) 35mm f/2.8 (serial 708205)
  • Vivitar Close Focusing Auto Zoom 75-205mm f/3.8 (early Kiron made version, two-ring zoom, serial 22616531)
  • Yashinon DX 45mm f1.4 (fixed lens on the Yashica 1C, Lynx 14-E rangefinder camera)
  • Yashinon-DX 50mm F1.4 (Youtube)
  • Yashinon-DX 45mm f/1.7 (fixed lens on the Yashica Electro 35 GSN made in Hong Kong)
  • Zeiss Jena Flektogon Auto 35mm f2.4 (serial 74736)
  • Zeiss Jena Flektogon 35mm f2.8 leatherette version (serial 5993475)
  • Zeiss Jena Flektogon 35mm f2.8 Zebra version (serial 9060041)
  • Zeiss Jena Pancolar 50mm f1.8 “Zebra” (serial 9093379)

Lenses with elements made of contaminated glass


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

泛黄的阳光愈合也有报道用钍玻璃元素的一些镜头,比如尼克尔35mm的f / 1.4镜头和超级手动50mm f/1.8 $ 1.4镜头。

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.