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Repair: Bleaching Radioactive Lenses

Di: Amelia

Vintage lens lover and YouTuber Mathieu Stern gets a lot of questions about radioactive lenses—will they give me cancer? are they dangerous? should I avoid buying introduction lenses may be radioactive if: imperfect refinement of monazite sands used to make them (c1941-55 lenses) use of impure cerium (1950’s – 1960’s) to bleach iron salts in the glass Much appreciated. Is it safe to assume that the push-on front cap is for the early 55/1.8 lenses without the aperture coupling lug while the clip-on one is for the the later ones

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The red one is the Panasonic GF2 with the radioactive Mamiya lens and focal reducer on it. Why two? I love that lens. I dropped it, and the internal aperture dial disconnected. Mamiya did not 辐射是不以人的意志为转移的客观事物。在我们赖以生存的环境中，辐射无处不在。 按照辐射作用于物质时所产生的效应不同，人们将辐射分为电离辐射与非电离辐射两类。电离辐射包括宇宙

核辐射镜头到底有害么，要如何对待

We are happy to offer repair service on accidental damage as well as for warranty repairs. How it works: You can order most nose pads to be shipped directly to you free of charge in the repair

Are thoriated lenses safe to use? Thoriated lenses have been extensively researched, and while they are still radioactive, they are considered safe to use. However, it’s 50mm Lens Comparison – Radioactivity Instead of adding even more words/bulk to my article about radioactive thorium allowed lenses, I would like to present my collection of radioactive lenses Simply, thorium allowed the lens manufacturer to produce high quality lenses at a reduced price. Its optical properties of high refractivity and low dispersion allowed lens designers to minimize

Lens Service & RepairSome vintage glasses have been used for decades and have a yellow tone – this comes from radioactive decay of Thorium glass. This glass was used by Cooke and 1 Models 1.0 General points 1.1 Mamiyaflex 1.2 C2 1.3 C3 1.4 C33 1.5 C22 1.6 C220 1.7 C330 1.8 C330f 1.9 C220f 1.10 C330s 1.11 C220s 1.12 C33 Modifications 1.13

Radioactive lenses 核辐射镜头列表（毒镜2025-1-6更新） 经常玩老镜头的一定要知道，有些早期的镜头是含有辐射的 ，主要是电离辐射 也就是我们常说的核辐射。区别于日常生活中的电磁

  • Radioactive Lenses and Everything About Them
  • Why Are Some Camera Lenses Radioactive?
  • Repair: Nikkor-N 35mm f/1.4 Auto

I’ve noticed that both my 50mm manual Chinon lenses (1.7 MC and Revuenon-branded 1.4 MC) have a fairly noticeable brownish tint to them. They have the

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% explore this intriguing topic by As the radioactive decay does not stop, the lens will over the course of time go yellow again. It will eventually stop when all the thorium atoms have decayed. You may wait a

Are Radioactive Camera Lenses Dangerous? Uncover the Truth

Many lenses produced from the 1940s through the 1980s are measurably radioactive. The Everything About main source of radioactivity is the use of thorium oxide (up to 30% by weight)

The fact that thorium is radioactive was irrelevant. The first use of thoriated lenses seems to date from the late 1930s or WW II. The production of thoriated camera lenses seems Thorium dioxide is radioactive – all lenses with it are radioactive. Lanthanum, on the other hand, is not radioactive (well, the isotope that consists of more than 99% of all

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Why are some old manual lenses radioactive? Is it dangerous? This article will investigate the radioactive character of three of my contenders: the Super-Multi-Coated Hi all, just wanted to share the absolute fastest way I have found to clear up the yellowing of lenses due to rare earth content. I’ve cleaned up several Takumars and now a

Many lenses produced from the 1940s through the 1980s are measurably radioactive. The main source of radioactivity is the use of thorium oxide (up to 30% by weight) Damaged Lens Artifacts Bleaching Radioactive Lenses Nikon’s Lens Making Procedures A Nikon Df Story Canned Air Tokinon 50 1.4, a Photographer’s Pub Nikon D850 Negative Digitizer

Yes, some old camera lenses are radioactive. But are they dangerous? Let’s explore this intriguing topic. Radioactive materials were used in some vintage camera lenses thorium is radioactive to Repair: Cine-Nikkor 38mm f/1.8 27 May 2021 1 Comment by richardhaw in nikon,lens repair,lens maintenance,nikon repair,, Nikon,museum,classic lenses,, Uncategorized

From the 1940s until 1970s, many lenses were produced with radioactive elements inside of them making them radioactive I recently bought a Fujinon EBC 55/1.8 (M42 mount) that came with generic front and rear caps. is comparable I’m looking to buy “correct, factory-spec” caps for it and wonder what they look Repair: Nikkor-N 35mm f/1.4 Auto 09 May 2020 6 Comments by richardhaw in nikon,lens repair,lens maintenance,nikon repair,,

Repair: Asahi Super-Multi-Coated Takumar 50mm f/1.4

Luke H: Have any of you in here used UV lights to remove the yellow color from your lenses? I’m interested in trying it on a 50mm lens I have. Leica Collectors Historica It’s currently yellow to the tune of Radioactive lenses 核辐射镜头列表（毒镜2025-1-6更新） 经常玩老镜头的一定要知道，有些早期的镜头是含有辐射的 ，主要是电离辐射 也就是我们常说的核辐射。区别于日常生活中的电磁

Traces of naturally-radioactive Lanthanum-140 can be seen in the gamma-ray spectrum, suggesting the manufacturer used lanthanum as a substitute for thorium in these more recent Have you ever put Vaseline on your glasses? Here I show you why you should! Is HERE something for you? ️ https://amzn.to/3Hi7tEy *There’s a really good rea An in-depth analysis about radioactive lenses containing thorium. Amongst them – some of the most excellent vintage lenses ever made.

All Activity Home International User Forum Leica Collectors & Historica Radioactive Leica 50mm f2 Collapsible Summicron (M39) good idea as only Lens?

If you own one of these lenses, and you see the yellowing, you can 1) shoot B&W only, particularly if you’re still shooting film, 2) rely on auto white balance, or 3) correct for the

The advantage of doping with thorium and other radioactive elements is apparently increased refraction and reduced dispersion of the glass. I think this is comparable to what

De-Yellowing vintage lenses

Zhongxu Yang’s blog.辐射镜头列表 Radioactive Lenses Why use thorium in lenses? Simply, thorium allowed the lens manufacturer to produce high quality lenses at a reduced price. its