Preset Lens

one90guy

Member
Joined
Jul 18, 2009
Messages
469
Location
Full time RVer
Format
Multi Format
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
 

David Brown

Member
Joined
Feb 16, 2004
Messages
4,049
Location
Earth
Format
Multi Format
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.)
 
OP
OP

one90guy

Member
Joined
Jul 18, 2009
Messages
469
Location
Full time RVer
Format
Multi Format

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?
 

E. von Hoegh

Member
Joined
Sep 14, 2011
Messages
6,197
Location
Adirondacks
Format
Multi Format
one90guy said:
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?
Click to expand...

No need to apologise. Every time I use one I have to remember how.
 
You must log in or register to reply here.
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…