Is Super Takumar radioactive?
Super Takumar 50mm f/1.4 (All 7-element variants contain Thorium – thoriated glass!, no 8-element variants contain thorium.) Some lenses have tested (moderately) radioactive, others have tested not radioactive: The hot ones…
Is Helios 44m radioactive?
This lens is not radioactive.
Which Leica lenses are radioactive?
For the record, thorium (aka Torio) glass was used for elements 1, 3, 6, and 7. These lenses are the unique and collectible “radioactive Summicrons” of lore and legend that tend to acquire a yellowish-brownish cast over time that can be eliminated by extended exposure to UV (that is, sunlight.)
Which Canon lenses are radioactive?
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.
How good are Takumar lenses?
The Super-Takumar is a good looking lens with excellent build and mechanical quality. Optically it has that vintage “character” that some like but others might not. I like its decent sharpness wide open (which becomes excellent stopped down), good CA resistance, and good bokeh.
Is Canon FD 50mm 1.8 radioactive?
Definitely not radioactive. Re: Canon FDn 50mm f1.
Is Industar 61 radioactive?
Concluding: as you’ll sometimes read, the Industar-61L/D is indeed radioactive, but its radiation is already hard to make out against the background radiation, and comes nowhere near the levels you absorb when sunbathing or flying. So for all practical uses, the FED-5 with Industar-61L/D is perfectly safe.”
Are radioactive lenses harmful?
In conclusion – no, you can’t get sick or die from radioactive lenses. You’d have to spend months in a room filled with 2 million of them in order to feel any consequences, and I believe no one’s collection is that big. So, if you have a couple of good ones, don’t be afraid to use them.
When did they stop using thorium in lenses?
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.
What are Takumar lenses?
The Takumar designation was used on lenses designed for Asahi’s 35 mm cameras, 6×7 cameras, and for other purposes too. Takumar lenses were made in M37 screwmount for the original Asahiflex cameras and continued into the M42 period. Auto-Takumar lenses were a type of preset lens. Super-Multi-Coated (later SMC) Takumar.
Is Canon FD 50mm 1.4 radioactive?
Re: Canon FDn 50mm f1. 4 – is one of those radioactive legacy lenses? It’s not, but, you shouldn’t “worry” about radioactive lenses anyway. They’re not dangerous to use and they’re relatively easy to clear if they get yellowed.