- Joined
- Nov 16, 2003
- Messages
- 624
jp80874 said:Michael,
The RH Phillips 7x17 I bought from Clay also has two screw holes in the base, both 3/8ths inch. I do some verticals using the big Ries legs and head as a base. Even with that Rock of Gibraltar I feel uncomfortable with the imbalance.
This winter I have a project in mind that will combine an idea that Lotus View Cameras is thinking about, but is not yet offering. See "Valuable tools in design" http://www.lotusviewcamera.at/subs/1sub_accessories_e.html. The concept is attractive because the weight of the camera-lens-film holder stays directly over the center of the tripod, perfectly balanced.
To implement this concept, give credit to Kerry Thalmann's lecture at the View Camera Conference. He introduced us to http://www.8020.net/, 80/20 the industrial erector set. They also have an eBay store for odd size pieces and cut off ends. The requirements of a 7x17 or 8x20 certainly fit in their definition of scraps.
I am a retired salesman with ideas. If any of you has a more practical mechanical background and like the idea, please post a bill of materials of pieces that address the stresses so we all can put the idea to work.
Stay focused and balanced.
John Powers
jimgalli said:I've thought about this problem some. So far I've limited my verticals to 7X17 because the Folmer 717 is simply tough enough and small enough to handle the strains well. I use an old Davis and Sanford tripod for doing these that has the most generous table of any of my tripods. It also tilts past 90 degrees which helps in weight distribution some. But since I will likely be using the older ricketier Korona's and Folmers for the rest of my life I've been thinking of building a dedicated table for verticals. 3/16" aluminum plate would be plenty strong enough. It would support the camera in a couple of vulnerable points and the cameras tripod thread would only need to 'locate' the camera to the table. Here's a very rough 2D sketch.
Michael Kadillak said:After giving this some further thought, the problem could be solved quite easily with the following accessory.
I have a Ries A250 head. Bolt a lightweight square base the same size of the Ries head into the base of the camera that uses both receiving holes. Recess these screw holes so the base will fit flat on the top of the tripod head. On one side of the base camera plate put a ridge lip that will acept the side of the A250 head and act as a further deterent for rotation. On the bottom of this camera plate will be a 3/8" receiving screw so this can be attached to the A250 tripod head. The ridge lip should be utilized on the on the top side of the head to provide weight support of the attachment screws and prevent rotation of the camera.
Jim Fitzgerald said:Jim, I like this idea. Would the design limit the bellows draw? Or does it slide somehow.
Stay Focused....or Soft Focused!!
Jim
SAShruby said:I am using combination of Ries tripod, Gitzo head. if you need 1/4 and 3/8 inch screw at the same time, you can by 1/4 to 3/8 adapter for couple bucks on ebay. I use custom screw which is regular 1/4 screw long 1 1/2 inch and two bolts and little wrench to tighten it. My top of tripod head is coverered by rubber, so if I tightened screw wery well, it holds camera still, no tilts or falling down.
BTW, I like the idea of doing vertical mount adapter, look great and it gives you full movements on tripod head. I think I am going to call my machinist to make one for me.
Michael Kadillak said:Help me out here. It seems to me that having support at the rear and front of the camera while it is in the verticle orientation surely accomplishes the objective but does it not inhibit variable bellows length and also place weight on the front standard when my camera needs to be capable of performing a front shift (front tilt for focusing)?
jimgalli said:My biggest concern is to remove the stress of a single 1/4-20 screw holding a giant camera at 90 degrees with scary stresses on front and rear standards that are 'iffy' even horizontally. I'm already thinking about the piece that holds the front standard being a seperate slotted piece with a big hand nut that could be moved to compensate for different lens / focus positions. Rear swing would be un-affected and do the schiempflug job. My old cameras mostly have no other movement concerns at the front.
This is what I did with my Canham 7x17. I tapped two additional 1/4x20 threads on the metal Canham plate that already had the 1/4 and 3/8 thread, and then bolted on the Really Right Stuff Multi-Purpose 6-inch Rail. I did not use the existing threads because, like George said, they are too close together. This RRS rail is then attached to my Arca B2 Ballhead. My main objective was to allow me to slide the camera on the ballhead to better balance with a variety of lenses, but it also works well in the vertical format.George Losse said:....Last winter I got the courage to add two extra 1/4-20 mounts to the focus bed. They don't need to be a second 3/8 as it really only stops the camera from turning on the tripod head. I decided not to use the two mounts that were on the camera, they were too close together to allow the use of the screw for the gear head....
resummerfield said:This is what I did with my Canham 7x17. I tapped two additional 1/4x20 threads on the metal Canham plate that already had the 1/4 and 3/8 thread, and then bolted on the Really Right Stuff Multi-Purpose 6-inch Rail. I did not use the existing threads because, like George said, they are too close together. This RRS rail is then attached to my Arca B2 Ballhead. My main objective was to allow me to slide the camera on the ballhead to better balance with a variety of lenses, but it also works well in the vertical format.
John, I had Ron build me a complete 8x20 rear standard. I just roll the horizontal off and then the vertical on. The bellows is the same bellows I just added bellows tabs for the vertical position. So all I do is turn the bellows 90 degrees. The front standard on an 8x20 horizontal is to short to get the lense up into the sweet spot. An 8x20 is built on an 8x10 bed so the front standard is the same height as an 8x10. This is to allow the camera to close up in the transport position. If you think about it no other format has this much difference in height when going from vertical to horizontal (12 inches). Now the 8x10 front standard is fine with a radical bed tilt is you're using a lens with enough coverage such as a large dagor. But if you are using a lens that is tight it won't make up to the sweet spot on the ground glass. What I did was have Ron build me a complete front standard using the vertical rails from a 16x20. This gives me all the height I want and allows me to work with a flat bed instead of a bed with a radical tilt.. I just roll the smaller 8x10 front standard off and then roll the taller standard on. So what I have is two complete rear standards and two complete front standards. The change is really easy since you just pull the bellows roll the back and front off and the other two on...replace the bellows and its done. Takes about 2:00 min. once you get the hang of it. This way all my camera movements are the same and I don't have nightmares of the rails ripping out of the bed from turning the camera on its side. If you just change the front standard to a taller one then the camera won't close in the horizontal position with the longer rails that hold the lens board. This way it also allows me to close the camera to the transport position no matter what set up I have. I hope this isn't to confusing. I had the idea of a telescoping front standard that would extend to make it up to the sweet spot without changing the front standard. But I wasn't willing to wait on that coming together. So I went this route and it works beautifully. Hope this helps. ....P.S..I do have some pics if anyone is interested just send me your email address and I'll send them to you.jp80874 said:Michael,
If I understand you correctly we are solving two different problems. You will still have the weight of the camera-lens-film holder flopped over on its side. What I suggested keeps the weight over dead center when the camera is in the vertical position. I am uncomfortable with this imbalance.
I discussed this with Dick Phillips. He agreed that this was a problem, but said that he had never worked on a solution such as Lotus shows. He thought it would be a workable solution. He only made fourteen 7x17s plus the 11x14s, and he clearly stated that they should only be considered for vertical shooting 2% of the time. If the customer wanted a higher percentage he should consider another camera.
A local friend Robert Puckett has an 8x20 Wisner. He shoots nudes using the vertical format. My understanding is that he had Ron Wisner make an entirely new front standard, bellows and rear frame. Im not sure I have this completely right, but I believe he has almost two complete cameras less the bed and rear standard. Correct me Robert if I have gotten this wrong.
I guess it is all a matter of how much stress you and the camera can take.
John Powers
jg, The cost was more than reasonable. What makes it so nice is having all the movements the same that an 8x20 expedition allows you in both positions, vertical and horizontal. Try putting a 30 inch artar on one flipped on its side with the bellows racked out to 36" and you'll know what I mean. I shoot a lot of verticals and the security of working with a flat camera bed and having my movements all the same was well worth the extra investment. But I agree, Richard has done some excellent work for me and I'm sure his cameras will be top notch and a great alternative. He also knows Wisner cameras top to bottom. Are his new cameras built on some type of conduit frame? Or some type of round metal tubing?jgjbowen said:I know this won't help those of you that already own cameras, but for those of you that are thinking of ULF you might be interested in Richard Ritter's new camera http://www.lg4mat.net/ulfcamera.html This camera will handle both horizontals and verticals. It takes Richard about 2 minutes to convert it from one axis to the other. This has to be much less expensive compared to having Ron Wisner custom build you an additional standard, back etc. The last I heard, Richard has finally started production....I hope to have my 7x17 in the next few months.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?