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Steve M Hostetter
29-Jun-2009, 14:52
Hello,,

Well, as you may know I have a couple new "faster" barrel lenses.. I need ideas on how to get a shutter that will give me fast shutter speeds..

I have an old barndoor shutter without a plunger but the mechanism works without a hose and bulb provided I manually work the lever... Can or does anyone use such a shutter on the front of the lenses as apposed to the intended rear ... ??

I made some waterhouse stops to stop them down since they have the slots but I wanna shoot wide open... :eek:

Thank you
Steve

PS... feel free to post pics of your creations!

Jim Fitzgerald
29-Jun-2009, 20:25
Steve, here is the idea that I came up with. It is a front mounted Packard and I built a filter slot in it so one can use the Lee 100mm filters. I built a lens shade/barn door for the front also but I do not have pictures of that. Works like a charm.
Two of the pictures show it mounted to the barrel lens on the 8x20.


Jim

Ash
30-Jun-2009, 01:13
Waaay back 2 years ago I did this to make use of a broken shutter that I now can't remember how I acquired!

http://i2.photobucket.com/albums/y43/second-belated/DSC00988.jpg

http://i2.photobucket.com/albums/y43/second-belated/DSC00989.jpg

http://i2.photobucket.com/albums/y43/second-belated/DSC00990.jpg


I don't have that camera any more, but I still have the shutter and lens (they don't fit on my 5x4 though). Basically I cut off the original motor piece (see the two holes on the left) and attached a spring to snap the shutter open and closed. It uses a long-throw release cable to push open the shutter, and closes by tension. It works and it's ugly from the back.

http://www.largeformatphotography.info/forum/showthread.php?t=23098 shows a whole thread of how I front-mounted lenses in front of a packard shutter with the cheapest possible tools.

Ash
30-Jun-2009, 01:15
Waaay back 2 years ago I did this to make use of a broken shutter that I now can't remember how I acquired!

http://i2.photobucket.com/albums/y43/second-belated/DSC00988.jpg

http://i2.photobucket.com/albums/y43/second-belated/DSC00989.jpg

http://i2.photobucket.com/albums/y43/second-belated/DSC00990.jpg


I don't have that camera any more, but I still have the shutter and lens (they don't fit on my 5x4 though). Basically I cut off the original motor piece (see the two holes on the left) and attached a spring to snap the shutter open and closed. It uses a long-throw release cable to push open the shutter, and closes by tension. It works and it's ugly from the back.

http://www.largeformatphotography.info/forum/showthread.php?t=23098 shows a whole thread of how I front-mounted lenses in front of a packard shutter with the cheapest possible tools.

Emmanuel BIGLER
30-Jun-2009, 08:30
This kind of shutter was very popular in France in the XIX-st century... and still is for pinhole photography with a touch of French style;)
http://www.chapellerie-traclet.com/hat/images/french-beret-black.jpg

Daniel_Buck
30-Jun-2009, 08:42
I guess this would be considered home made, just rubber banded to the front of my Betax #5. I've posted it here before

Here it is in "action", two 1/50th shutter clicks: http://www.youtube.com/watch?v=Ke9zehk2sfw

It's not the prettiest (or the sturdiest) mount in the world, but it does seem to work pretty good for trying out smaller lenses without spending much money/time making a better mount each time.

http://www.buckshotsblog.com/wp-content/uploads/2008/09/betax_01.jpg

http://www.buckshotsblog.com/wp-content/uploads/2008/09/betax_03.jpg

Ash
30-Jun-2009, 09:27
Sorry, mods can you remove my double post please?

kirkmacatangay
30-Jun-2009, 09:46
Ash,

I did something similar with a motor driven 6x6 Packard, but added a PC sync.

http://farm4.static.flickr.com/3159/3114506938_1e9c4b7174.jpg

On the back I used a Cokin bracket so I can front mount it on multiple lenses. Mostly for barrel lenses for 8x10.

Kirk

Jason Greenberg Motamedi
30-Jun-2009, 10:36
Anybody ever used a shutter of a graphic arts camera? I am going to strip all the usable bits (lenses, bellows, vacuum pump, lights) next week out of a huge (22x26) horizontal graphic arts camera before it goes to the dump, and noticed that the camera included a pretty big AC powered solenoid shutter with controller. While it was designed for exposures ranging in seconds to minutes, it seems to have pretty short times too. I am not exactly sure how I am going to modify it for use, anybody have any experience with this?

William McEwen
30-Jun-2009, 10:41
This kind of shutter was very popular in France in the XIX-st century... and still is for pinhole photography with a touch of French style;)
http://www.chapellerie-traclet.com/hat/images/french-beret-black.jpg

LOL. Worth clicking on the link!

Helcio J Tagliolatto
30-Jun-2009, 18:52
LOL. Worth clicking on the link!


Magnifique!

Steve M Hostetter
1-Jul-2009, 12:42
thx for all the photos and ideas..! you guys are like mad scientist's given the chance:D

keep em comin

Jim Galli
1-Jul-2009, 12:58
Here's mine......:p


http://tonopahpictures.0catch.com/JimGalliShutter.jpg
patented jim galli shutter

ljsegil
1-Jul-2009, 13:52
Jim,
I think you've got a light leak problem with that shutter, check your lower left corner.
Larry

Steve M Hostetter
1-Jul-2009, 14:47
Here's mine......:p


http://tonopahpictures.0catch.com/JimGalliShutter.jpg
patented jim galli shutter

ok Jim I'm curious,,, what kind of speed you getting through that pie shaped contraption:D

Jim Fitzgerald
1-Jul-2009, 20:13
1/15 of a second! Opps!!!! wrong Jim!

Jim Galli
2-Jul-2009, 06:12
ok Jim I'm curious,,, what kind of speed you getting through that pie shaped contraption:D

As quick as you can flick-of-the-wrist. I'd guess 1/15th-1/30th. You can also narrow the slit. Movie camera shutters work this way with a pie shaped slit. My improved model is going to have the 2 old dark slides physically screwed together with fiber washers so you can change the angle and it will be easier to hold. Maybe I'll do that this weekend and hold a Calumet shutter speed tester behind the lens to get a better idea of what the fastest time attainable might be and if it's repeatable at all.

Jim Michael
2-Jul-2009, 07:35
At that fast of a shutter speed do you see any loss of contrast from the small amount of light reflected off the film slides pre- & post-exposure? Seems most slides have a bit of a sheen to them.

Jim Galli
2-Jul-2009, 08:40
At that fast of a shutter speed do you see any loss of contrast from the small amount of light reflected off the film slides pre- & post-exposure? Seems most slides have a bit of a sheen to them.

No, but, the inelegance of the system befits the primitive lenses I use. The answer might be different with a multi-coated Sironar. In the photo I was making that day, I used a 10X12 Plastigmat lens roughly the same age as the camera, ie. 95 + or - years.

Arthur Nichols
2-Jul-2009, 10:46
I guess that such a shutter could be made by making a darkslide with a slit run in some tracks. Spring load and then release. A kind of hard version of the graflex type focal plane shutter. I have tossed around the idea but have to execute it.

eddie
2-Jul-2009, 11:07
I guess that such a shutter could be made by making a darkslide with a slit run in some tracks. Spring load and then release. A kind of hard version of the graflex type focal plane shutter. I have tossed around the idea but have to execute it.

this is what i do...no mechanism. i just pull at a constant speed and vary the slit width. i am sure that 1/1000 , 1/2000 or faster is possible with a combination of small slit and fast pull.

Jim Galli
2-Jul-2009, 11:17
Domenico Foschi (http://www.dfoschisite.com) who used to post here has a graflex curtain shutter robbed out of a speed graphic mounted in the front of his Kodak 2D. It's very funky looking but go look at his work. It seems to work perfect for him.

Arthur Nichols
2-Jul-2009, 12:43
This is what I use. I guess it must be similar to what Domenico uses. I just had it tuned up by Fred Lustig and can get about 1/500 out of it. I use on my Deardorff and my 7x17. It is great for longer and faster barrel lenses. I have been working on a project of images of only the top of water, complete with reflections wave patterns and so on. The use of this shutter arose from the need with this project to stop moving water. It works well. The only problem is that the shortest speed is about 1/30 so when using the bigger cameras at small f/stops I need longer exposures between 1-1/10 sec.
Yesterday I got inspired by this thread and made an adapter to use a large Alphax shutter on the front of my 610 f/9 Nikkor. I made a disk with a hole in the middle to fit the shutter. Around the circumference I glued felt so it is a press fit into the filter threads. No vignetting at F stops smaller than 16. No pictures yet but it is very simple.
Eddie, do you have any pictures of your shutter rig?

Steve M Hostetter
2-Jul-2009, 14:30
Domenico Foschi (http://www.dfoschisite.com) who used to post here has a graflex curtain shutter robbed out of a speed graphic mounted in the front of his Kodak 2D. It's very funky looking but go look at his work. It seems to work perfect for him.

Jim, I assume that you have glued a lens cap to the back of each darkslide (shutter), otherwise how do you keep light out while you put your film darkslide back in..??

Jim Galli
2-Jul-2009, 14:39
Jim, I assume that you have glued a lens cap to the back of each darkslide (shutter), otherwise how do you keep light out while you put your film darkslide back in..??

I'm just fast man, fast. :cool:

Steve M Hostetter
2-Jul-2009, 14:52
lmao,,, so far this low budget method seems to be the most practicle... I'm gonna try this design with the lens cap velcroed to one slide ... When I pull my darkslides I push in on the film holder to keep it from the whole holder moving up.. Maybe I just need some practice

Carioca
2-Jul-2009, 15:06
There was a thread about front mounting of a sinar shutter:

http://www.largeformatphotography.info/forum/showthread.php?t=40730&page=3

Sidney

Glenn Thoreson
2-Jul-2009, 17:19
I guess that such a shutter could be made by making a darkslide with a slit run in some tracks. Spring load and then release. A kind of hard version of the graflex type focal plane shutter. I have tossed around the idea but have to execute it.

I have one like that, that I made. At the present time, though, I'm unable to post a picture of it. Mine doesn't use a spring. I just push it down for an easy 1/25. A little harder push can get 1/50 without any problem. I need a heavy camera on a sturdy tripod to pull it off, though. I made it to front mount on a Voigtlander Triple Anastigmat (Thanks, Ole!).