Testing lenses for Gamma radiation : Auto Chinon 50mm F1.7 lens.

Ғылым және технология

Testing lenses for Gamma radiation : Auto Chinon 50mm F1.7 lens.
This Chinon lens is also branded as Yashinon DS or DS-M.
Dosimeter: Este Air Counter S gamma radiation detector.
After background radiation is normalized, the lens is placed 1cm below the detector's sensor. The lens is then reversed to see which side emits more radiation. The update rate of the Air Counter S dosimeter is about every 10 seconds.
Please feel free to watch the video at a higher speed.
Music :
Sound Off
By :
Jingle Punks

Пікірлер: 9

  • @arrangearrange
    @arrangearrange5 күн бұрын

    What about the 1.4?

  • @damiendehorn6350
    @damiendehorn63502 жыл бұрын

    This looks like the Auto Chinon 55mm F1.7 lens, But the hyper focal mark on the 55mm is a diamond shape. Wonder could they both be made by Tomioka, or could that mean that the 55mm is the radioactive lens made by Sun.

  • @FocalReduced

    @FocalReduced

    2 жыл бұрын

    I believe there are a few different versions of the 55mm Auto Chinon. I know the later MC versions are not Tomioka design. Your guess would be as good as mine.

  • @damiendehorn6350

    @damiendehorn6350

    2 жыл бұрын

    @@FocalReduced Thanks for the work you put into doing these videos. We really appreciate it.

  • @paulyan1946
    @paulyan19462 жыл бұрын

    Excellent video! 👍Your thoughtfulness in conducting the radio-activity test is highly commended. Question: what adaptor to use if this lens is to be mounted on a Fujifilm X-mount camera since the lens has no A/M switch? Or will a normal M42 - FX adaptor do?

  • @FocalReduced

    @FocalReduced

    2 жыл бұрын

    Thank you for your comment. Most reputable brand M42-FX adapters have a lip on the inner circumference of the screw threads to depress the stop down pin on the back of the lens. If you are not sure, ask the seller. In some cases, the lip can be removed for lenses like Asahi SMC Takumar lenses with obstructions on the back of the lens that will interfere with proper mounting on adapters with the lip. I also have a video on different M42-Canon EF adapters, which goes over the issue.

  • @paulyan1946

    @paulyan1946

    2 жыл бұрын

    @@FocalReduced Thank you very much for your prompt reply. Will go watch your M42-Canon EF adapter video. All the best to you! 🙏

  • @chrismarcelo5591
    @chrismarcelo5591 Жыл бұрын

    what does the gamma radiation do to your body?

  • @lemonysnikts3352

    @lemonysnikts3352

    Жыл бұрын

    makes your penile member longer

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