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Old 01-09-2014   #11
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Default Re: Cambo Legend with dSLR conversion

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Originally Posted by cyclohexane View Post
Hey Duck, get a chance to shoot with your Cambo at all?

I was poking around to see if anyone had experience with the Sinar P-SLR, and similar rigs, and stumbled across this thread. It looks like your Cambo conversion would accomplish about the same thing.

My local medium/large format dealer is hot on the Sinar P right now (especially since I don't need an expensive medium format digital back like I would if they tried to sell me an Alpa tech camera or something similar). They just came out with a version for the Leica S (immediately after Leica acquired them) so the Sinar P has to have some happy users. The lenses one can mount on the Sinar or something like your Cambo should, in theory, be much better than any tilt shift lens from Nikon, Canon, Samayang, or the EF/F/M645/S mount Schneider tilt shift lenses...
If you have the money to get the Sinar P I'd say go for it. Putting a DSLR on the back of a 4x5 camera creates one key issue, focus distance. Because the sensor is now a good 40 some odd millimeters behind where the film plane was, you will run into issues where the lens won't be able to focus at certain distances. I've found that I can barely use my 105mm, and even then only for close-up/macro work.

I'm waiting to get my hands on an old MF digital back, then the fun will really start.

I also have to concur with Duck about the weight. It's what prompted me to buy the Sirui that I'm using now. The Cambo weighs more than my 600mm, and the weight isn't centered like it is with a gimbal head.

As far as shots done with the Cambo, here are a few that I've done using the Nikkor 210mm:


Mouse Watch by tltichy, on Flickr


Red, Red Rose by tltichy, on Flickr
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Old 01-09-2014   #12
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Default Re: Cambo Legend with dSLR conversion

Just another thought, and something I wish I would have thought about before buying the Cambo, if you get a system where the rise is handled by lifting from underneath (like the Sinar) you should be able to remove the rear standard and mount your camera. I've seen it done, but I can't remember where it was. I'll look for it and if I find it I'll post it up.
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Old 01-09-2014   #13
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Default Re: Cambo Legend with dSLR conversion

Here's one:
The dSLR to large-medium format DIY build: Nikon D800e on Sinar P camera Photigy: Online Studio Photography Lessons

...and another one....http://www.photigy.com/how-to-develo...5-view-camera/
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Old 01-09-2014   #14
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Default Re: Cambo Legend with dSLR conversion

Scatterbrained, You're right about the focal length problems. I was initially motivated to buy this for the tilt/shift qualities and it's closeup capabilities. The post you referred to was one I saw as well and I noticed the Horseman cameras are better adapted for that kind of configuration. If I had the money I'd love to invest in a digital back but that's too much pocket change for me. I do have a couple of lenses for the camera; a 210mm and a 127mm. Later on I might play with something in the 80 to 90mm range to see what happens. Of hand I don't know how they convert to a dSLR focal length.

Great shots, by the way. Love the one of the watch.
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Old 01-09-2014   #15
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Default Re: Cambo Legend with dSLR conversion

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Scatterbrained, You're right about the focal length problems. I was initially motivated to buy this for the tilt/shift qualities and it's closeup capabilities. The post you referred to was one I saw as well and I noticed the Horseman cameras are better adapted for that kind of configuration. If I had the money I'd love to invest in a digital back but that's too much pocket change for me. I do have a couple of lenses for the camera; a 210mm and a 127mm. Later on I might play with something in the 80 to 90mm range to see what happens. Of hand I don't know how they convert to a dSLR focal length.

Great shots, by the way. Love the one of the watch.
Thanks.

If you''re using the same set up I am I can tell you now that 80-90mm won't work. At 105mm I find that it won't achieve focus until the subject is inches from the camera and I've got the two standards butting up against each other. I got the lens super cheap though so no complaints. I'm thinking about getting another monorail clamp (the one that holds the monorail to the tripod) and mounting it upside down where the rear standard would go. Then I can make a spacer/mount to mount my camera to.
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Old 01-09-2014   #16
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Default Re: Cambo Legend with dSLR conversion

On a side note, I paid less for my whole set-up than it would have cost me to get a 90mm TS-E. I use it now for the same kind of shots I would have used a 90 TS-E for, I just look forward to being able to do even more with it.
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Old 01-09-2014   #17
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Default Re: Cambo Legend with dSLR conversion

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Originally Posted by Tat2Duck View Post
Later on I might play with something in the 80 to 90mm range to see what happens. Of hand I don't know how they convert to a dSLR focal length..
They convert exactly to the same focal lengths as if they were DSLR lenses being used on a DSLR. An 80 or 90mm lens on a full frame DSLR is a slight telephoto, on a medium format they are a "normal" focal length and on a 4x5 a moderate wide-angle.

The difference is that, when used on a 4x5 camera with a DSLR, you can't position the lens close enough to the sensor in the camera to focus anywhere other than on a subject that's close to the camera.

In other words the "bellows distance" between the lens and sensor is too long because the camera's sensor is buried down in the body of the camera. The result is the lens and sensor can't be brought close enough to each other for a full range of distance focusing.

A bag bellows (sometimes also needing a recessed lens board for WA lenses) and a MF digital back does allow the lens and sensor to be placed close enough to allow infinity focus at the risk of touching the sensor with the rear element of the lens if you're not careful.

I used a MD digital back with a Sinar F for several years because of the swings and tilts that the Sinar provided and from my experience a modern tilt/shift lens on a DSLR is much more usable with a more intuitive and better workflow for every type of photography, not just close-up work.
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Old 01-09-2014   #18
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Default Re: Cambo Legend with dSLR conversion

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Originally Posted by scatterbrained View Post
...I'm thinking about getting another monorail clamp (the one that holds the monorail to the tripod) and mounting it upside down where the rear standard would go. Then I can make a spacer/mount to mount my camera to.
That sounds like a super idea. In theory I think that would work... in theory

Quote:
Originally Posted by scatterbrained View Post
On a side note, I paid less for my whole set-up than it would have cost me to get a 90mm TS-E. I use it now for the same kind of shots I would have used a 90 TS-E for, I just look forward to being able to do even more with it.
Yes, I paid a little over $600 for the camera, extension arm, compendium and a couple of lens boards. The two lenses cost me just under $300. The lens board conversion was $80 (?). I can't remember. So far the stand has cost me $160 in parts and labor and I'll need a few more to finish it. $200 in total, I estimate. But I can use the stand for my other cameras too. Not to mention the versatility of the camera, as you mentioned.
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Old 01-09-2014   #19
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Default Re: Cambo Legend with dSLR conversion

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Originally Posted by Brooks View Post
They convert exactly to the same focal lengths as if they were DSLR lenses being used on a DSLR. An 80 or 90mm lens on a full frame DSLR is a slight telephoto, on a medium format they are a "normal" focal length and on a 4x5 a moderate wide-angle.

The difference is that, when used on a 4x5 camera with a DSLR, you can't position the lens close enough to the sensor in the camera to focus anywhere other than on a subject that's close to the camera.

In other words the "bellows distance" between the lens and sensor is too long because the camera's sensor is buried down in the body of the camera. The result is the lens and sensor can't be brought close enough to each other for a full range of distance focusing.

A bag bellows (sometimes also needing a recessed lens board for WA lenses) and a MF digital back does allow the lens and sensor to be placed close enough to allow infinity focus at the risk of touching the sensor with the rear element of the lens if you're not careful.

I used a MD digital back with a Sinar F for several years because of the swings and tilts that the Sinar provided and from my experience a modern tilt/shift lens on a DSLR is much more usable with a more intuitive and better workflow for every type of photography, not just close-up work.
Thanks for that explanation. It'll save me some head scratching later.
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Old 01-09-2014   #20
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Default Re: Cambo Legend with dSLR conversion

Here are some examples of different focus distances using a Nikon 85mm tilt shift lens on a D3X. Sometimes the tilt or swing was used to increase DOF and sometimes to minimize the DOF.

The reason to use a tilt or swing in the "opposite" direction to create an out of focus area or shallow OF is that you can use a tighter f/stop instead of shooting wide open and you can control where the plane of focus begins and ends.


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