akoloskov wrote in post #8798537
...Man, I've looked at your photos.. Great job, great cars ! I do own tuned (by me) Subary LGT 05 with alky injection, have lot of fun driving it...
Thanks, shooting cars is my day job. Some times a night job as I got home at 1:30 last night after shooting a car.
Ballen Photo wrote in post #8798646
WOW GUYS! I think you're on to something here!
John, Nice example of what you can do with that set up. Also, I like the way you have incorporated the people with their cars in some of those shots on your website. Good stuff.
-Bruce
Thanks Bruce.
akoloskov wrote in post #8798537
...As for a lens, I have no idea how wide I can go, as I did not try anything except Bronica 150mm with this setup yet.
However, I do not see any difference between my system and medium format camera, as I can have same (or even less, if use recessed lensboard) distance between lens and camera sensor medium camera has. I guess I could use Mamiya 35mm lens without any problem, it should be a room for some shift as well. (with camera connected directly to a bellows)
So far this is my speculations only , I did not try it, as I do not have such lens yet. For now I more interested in macro studio photography with this setup...
As long as you have the same minimum distance from your sensor to the lens flange as the original Medium format body then you can use any lens from that system. It looks like your setup is ideal for that. You should look into the Mamiya M645 lenses.
breal101 wrote in post #8798742
This might help answer the question of how wide you can go. Sinar had special lenses made by Rodenstock for digital use they range from 28mm to 180mm.
http://www.calumetphoto.com …f-4-0-cmv-lens-sinar.html
I'm not suggesting that anyone buy these as they are a bit expensive and have a built in shutter that wouldn't be needed. It would seem that a lot of lenses might work. Now I'm really glad I kept my Sinar, I might have to try this out. Just one question for rigshots, did you make the board for the EOS mount or can one be bought ready made?
Thanks but those lenses are for a different kind of Sinar. Also a different kind of user, one with lots more money than I have!
To answer your question, I made the lens board, butchered a Toyo recessed lens board and attached it to a Sinar one. You can just buy a Sinar rcessed lens board if you prefer. I also built the rear board attaching the EOS body but you can buy similar on Evilbay. I built them because it was easier and cheaper for me and because I already had most of the bits. If starting from scratch then it's easier to just buy them.
I actually had almost everything I needed to build this setup just lying around. I have a second Sinar, a P, which is far more robust than the F that is pictured. I think the 'F' stands for flimsy! The Sinar P is a much better and more stable camera so is a far better choice but it is just so damn heavy (not a problem in a studio). All I had to do was make the couple of adapters for the front and back so for me this was a VERY cheap setup but of course if you don't have any of the gear then it could be fairly costly.
akoloskov wrote in post #8801067
John,
Can you, please, explain why it fails with any lens shorter than about 100mm? Can't get closed enough to a camera sensor? I never work on such setup before, so I need to be sure I understand it right. I found nice APO-RODAGON-N 50mm f/2.8 on ebay, thinking to get it.
So, would I be able to use it with my setup?
Thanks!
I'm not an optics expert so maybe some of my terminology is wrong but basically a 100mm enlarging or large format lens needs a 100mm distance (maybe focal length, to focus it's image at infinity. A 50mm lens needs 50mm to focus at infinity. If your minimum distance between the sensor and lens is longer than the focal length then you won't achieve infinity focus but you can still use it for macro. That's the problem I have with the 80mm APO Rodagon-N (it's a problem for me but not if all you shoot is macro). My sensor is too far from the lens to achieve infinity, even with the recessed lens board that I use. The lenses used on 35mm bodies are a different design (retrofocus I believe) which allows ininity focus on longer focal length lenses. I'm not sure about your setup or how you intend to use it. Maybe the 50 will be fine, maybe not. A longer lens gives you more room to work so I would probably avoid the 50 for that reason alone.
Wilt wrote in post #8801119
...A question I have for the OP is if you have a large format lens mounted on the lens board, or if you placed some other lenses up front (even the TSE). Larger format lenses are limited in the resolution compared to 135 lenses, since they have to cover a much larger image area normally...
I haven't used enough large format lenses to really comment but there are many large format lenses designed to be used with digital backs and their resolution is in no way inferior to any other lenses. In general, an OLD large format lens may not be as sharp as a good 35mm lens but I find that my Rodenstock Sironar-N 150/5.6 is a bit too soft wide open, sharp at F8 and excellent at F11. Mamiya M645 lenses have an excellent reputation and you will find that some of these are superior to many 35mm lenses, 120 Macro comes to mind, but most of them are excellent.
JJ