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 

Large Lens Shutters

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



Joined: 15 Apr 2004
Posts: 123
Location: Southern CA

PostPosted: Sat Dec 31, 2005 10:44 pm    Post subject: Reply with quote

Other than the ubiquitous Packard shutter, are there any other viable alternatives to shutter a large lens? (No hat jokes, please) There must have been some way to shutter these lenses, and provide some reliable speed choices. Has anyone adapted a 4x5 Speed for this purpose?
Back to top
View user's profile Send private message Send e-mail
Rangemaster



Joined: 06 Jul 2001
Posts: 412
Location: Montana, Glacier National Park

PostPosted: Sun Jan 01, 2006 5:49 am    Post subject: Reply with quote

How large a lens you talking about, a couple of the manufactures made quite large shutters, the Ilex and Aphax made a hugh #5 shutter as well as #4's as well, and if your handy, it is not that hard to build a gravity feed shutter with the correct slits in it to approxmate accurate shutter speeds.

Dave

_________________
Focus on the Picture, Not on the Glass.
Satin Snow(TM) Ground Glass
Back to top
View user's profile Send private message Send e-mail Visit poster's website
camz



Joined: 15 Apr 2004
Posts: 123
Location: Southern CA

PostPosted: Sun Jan 01, 2006 7:29 pm    Post subject: Reply with quote

The lens opening is 3.5 inches, so Ilex #5 won't do. I'm looking for a large Studio
shutter, but again, it has limited speed
choices.

So, are there any plans available for fabricating a gravity-driven, slit shutter?
Can you make one using an old plate holder
and dark slide?
Back to top
View user's profile Send private message Send e-mail
Rangemaster



Joined: 06 Jul 2001
Posts: 412
Location: Montana, Glacier National Park

PostPosted: Mon Jan 02, 2006 1:38 am    Post subject: Reply with quote

There was a thread over on apug.org not to long ago about this type of shutter, it may well be worth your time to register over there and then do a search for shutter information, as I remember it it was quite an ingienious design and had a lengthly discussion.

Dave

_________________
Focus on the Picture, Not on the Glass.
Satin Snow(TM) Ground Glass
Back to top
View user's profile Send private message Send e-mail Visit poster's website
David A. Goldfarb



Joined: 03 Sep 2004
Posts: 142
Location: New York City

PostPosted: Mon Jan 02, 2006 10:44 pm    Post subject: Reply with quote

Studio shutters aren't seen too often apart from lenses, and they are often not in very good repair. They only have two settings, open and "B." I have two of them, and I can open and close it in about 1/5 sec.

Luc and other companies made a shutter that mounted on the front of the lens, held in place with three set screws, usually bulb operated. I have a large one that has three settings--open, B, and I (about 1/15 sec)--and I use it with my big portrait lenses. I had Frank Marshman add a flash sync to it, so I can use it with strobes.

Another option is to adapt a Sinar Copal shutter to your camera. You can find older ones for under $300 typically, and they have a range of speeds as well as flash sync.
Back to top
View user's profile Send private message Visit poster's website
glennfromwy



Joined: 29 Nov 2001
Posts: 903
Location: S.W. Wyoming

PostPosted: Tue Jan 03, 2006 12:44 am    Post subject: Reply with quote

Another one on the apug forum is Jim Galli's darkslide shutter. Pretty simple. He uses two dakslides in a V arrangement and by varying the width of the V, he can attain several speeds by flashing the slides in front of the lens. Kind of a similar operation as a drop slit.

_________________
Glenn

"Wyoming - Where everybody is somebody else's weirdo"
Back to top
View user's profile Send private message
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