WebJun 8, 2007 · The only lens I have ever heard of in the Canon FD line up with the Thorium element is the first four versions of the 35mm f2.0. The first chrome nose versions are always Thorium and those later marked S.S.C. with the concave front element are also Thorium. There is an excellent write on these on the Canon FD FAQ site here: WebAll Soviet lenses have passport sharpness, which was designed for full-frame film cameras, and therefore the sharpness of all Soviet lenses is not enough for the resolution of the digital sensor of modern not only cropped (APS-C or micro 4/3) cameras, but even full-frame digital cameras with a sensor resolution of 20 MP or higher.
throium glass lenses - PentaxForums.com
WebCanon Digital Cinema Camera EOS C300 Mark III Firmware Version 1.0.5.1 [Windows] ... The following features are enabled when the following lenses are attached:CN8×15 IAS S/E1,CN8×15 IAS S/P1, CN-E45-135mm T2.4 L F, CN-E45-135mm T2.4 L FP - Displaying metadata, such as the model name and the focal distance of the lens attached. ... WebSep 2, 2013 · Many camera lens had radioactive Thorium-232 coatings until mid 1970s. If coating turns brown/yellow tint its easily cleared up with ultraviolet light. Above video radiation test shows 25,000 CPM while normal background radiation is 20 CPM. That can't be good for you. Makes you wonder how radiation didn't expose the film. the day the earth stood still explained
Pentax Takumar Lens Radiation for Pentax 6x7 Lenses
WebApr 26, 2024 · Th-232 makes up 99.98% of Thorium atoms, and all Thorium isotopes are radioactive. Which should tell you that potassium is more radioactive than thorium since eating 1 banana was stated as being as bad, radiation exposure wise, as using a lens with thorium glass for an hour. Neither are very hot given that potassium 40 has a half life of … Web5 th. in Advanced Ranking ($200-$400) Overall Battery Score i. 136. 75 Samsung Galaxy S22 (Exynos) BEST 152. Top score Honor Magic5 Lite 5G ... Camera Sensors; Camera Lenses; Speakers; Reviews. Smartphones; Camera Sensors; Camera Lenses; Wireless Speakers; Articles. Test results; Best of; Tech articles; How we test; About us. Our … WebThe reason for having thorium is to improve the quality of light passing through the lens by allowing it to pass through the glass more quickly. The yellow tint inhibits the ability for light to pass through the lens meaning that you lose an F … the day the earth stood still gort