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Thread: Preset Lens

  1. #1
    one90guy's Avatar
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    Preset Lens

    Was looking at lens today, saw one that looked like it had 2 f stop rings and identified as a preset lens. So far I have not found anything on google that explains this.

    David
    People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf.

    George Orwell

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    David Brown's Avatar
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    The aperture is not automatic, it is manual. You set the fstop on one ring, and the second allows you to view and focus wide open and then stop down to the "pre-set" f stop before tripping the shutter without having to look at the lens (or take the camera down from your eye.)
    David
    Taking pictures is easy. Making photographs is hard.

    http://silverdarkroom.net
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    one90guy's Avatar
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    Quote Originally Posted by E. von Hoegh View Post
    Found that, but after rereading I understand. Thank you.

    David
    People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf.

    George Orwell

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    one90guy's Avatar
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    Quote Originally Posted by David Brown View Post
    The aperture is not automatic, it is manual. You set the fstop on one ring, and the second allows you to view and focus wide open and then stop down to the "pre-set" f stop before tripping the shutter without having to look at the lens (or take the camera down from your eye.)
    Thank you David I finally understand. For some reason, senior moment, I just could not wrap my head around that

    David

    Hot in Dallas today?
    People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf.

    George Orwell

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    David Brown's Avatar
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    Quote Originally Posted by one90guy View Post
    Hot in Dallas today?
    OMG, yes!
    David
    Taking pictures is easy. Making photographs is hard.

    http://silverdarkroom.net
    http://silverdarkroom.wordpress.com

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    Quote Originally Posted by one90guy View Post
    Thank you David I finally understand. For some reason, senior moment, I just could not wrap my head around that:confused:

    David

    Hot in Dallas today?
    No need to apologise. Every time I use one I have to remember how.



 

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