Graflex.org Forum Index Graflex.org
Get help with your Graflex questions here
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Novice Q: Rules of thumb for Graflex focal plane shutters?

 
Post new topic   Reply to topic    Graflex.org Forum Index -> Large Format Photography
View previous topic :: View next topic  
Author Message
keshlam



Joined: 21 May 2021
Posts: 38
Location: Boston area

PostPosted: Mon Jul 19, 2021 11:19 pm    Post subject: Novice Q: Rules of thumb for Graflex focal plane shutters? Reply with quote

I grew up with the rule of thumb that a change of one stop on the lens aperture is equivalent in exposure change to doubling or halving the shutter speed, so the two could be easily traded off for depth of field control vs. sensitivity to motion blur.

Of course on the RB-Auto, shutter speed is a combination of which curtain window you select and what spring tension you set -- and changing the window does also affect tension. This means that while there are actually quite a variety of shutter speeds available (allowing more fine-tuning of depth of field?) moving between them is more complicated. This seems to make it harder to shoot "aperture priority", at least until I get very used to selecting from that matrix of shutter speeds; it's no longer purely a matter of turning one knob up or down a step.

Are there any tricks for working with these cameras which would make trading off aperture vs. shutter more straightforward? Or do we just have to internalize, or look up, the shutter combinations (like gear combinations on a 10-speed bike) if we want to control depth of field but still want accurate exposure?

Or should I just count on film latitude and be prepared to compensate in darkroom/Lightroom if necessary?
_________________
() | ASCII Text Campaign
/\ | Stamp out HTML mail!
Back to top
View user's profile Send private message
45PSS



Joined: 28 Sep 2001
Posts: 4019
Location: Mid Peninsula, Ca.

PostPosted: Tue Jul 20, 2021 1:23 am    Post subject: Reply with quote

Perhaps this chart will help. https://photographyuncapped.com/articles/photography/iso-shutter-speeds-f-stops/
Speeds were accurate when the camera was new but are off up to a stop depending on use and storage. Test the shutter speeds with a shutter speed tester at the center of the frame if possible.
_________________
The best camera ever made is the one that YOU enjoy using and produces the image quality that satifies YOU.
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    Graflex.org Forum Index -> Large Format Photography All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group