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All Forums Category: General Numismatic Forums Forum: Coin Photography, Image Editing, and Related Software

Forgive My Ignorance...question On Lenses

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andywoj00
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 Posted 06/03/2016  10:58 am Show Profile   Bookmark this topic Add andywoj00 to your friends list Get a Link to this Message Number of Subscribers
I just picked up an SK Componon S 80mm lense for a good price. Also have an El Nikkor 80mm as well. On both, there is an "extra" adjustment ring (not aperture)....I don't know what these adjustments are used for.

On the Nikkor, there are 5 stop positions but nothing seems to change when moving the ring through it's range. On the SK, there is a lever that moves and seems to control the aperture to some extent outside of the hard aperture stops.

Someone please educate me on the function and use of these spare adjustments. Thanks in advance.
austrokiwi
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 Posted 06/03/2016  1:39 pm  Show Profile   Bookmark this reply Add austrokiwi to your friends list Get a Link to this Reply
You use the lever as follows. Set the aperture you want to take the photograph at, then move the lever so that the aperture is actually wide open. Focus then before you take the shot move the lever to close the aperture to the F stop you have set. (you will have to adjust the exposure)
Edited by austrokiwi
06/04/2016 02:22 am
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All Forums Category: General Numismatic Forums Forum: Coin Photography, Image Editing, and Related Software



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