shooting Architecture/medium format lens depth vs 35mm

Dear guys

I´ve been shooting architecture with my 5d and a 24TS-E and also with the 50mm 1.4

The problem is that when shooting indoors I have to use the 24Ts to cover all the space, but the architects whom i work for tell me that they dislike the distorted perspective (in terms of depth and sizes) and so do I.

In some cases it´s possible to shoot kind of panoramics with my 50mm and of course the results are better but this is not so easy depending on the objects you have very close to the camera (it´s really difficut to sticht them later). The other problem i have with this technique is that I usually make a lot of similar pictures (camera mounted on tripod and controlled by notebook) with different lights, including assistants in the frame lighting specific areas that i later mount in photoshop.

I know that there´s a physical optical limitation related with the space you have, but my question is (I´ve been searching but couldn´t find anything)if using a medium format camera will help. I mean, suppose that i put an 80mm on a 6x4,5 full frame medium format camera, it will have the same coverage as the 50mm on my 5d or it will be bigger (as if it was shot with a wider lens with the 5d).
Uf, very difficult to explain it in english, i´m sorry.
some examples of my work:
http://garciabetancourt.wordpress.com/2009/04/01/park-hyatt-mendoza/

http://garciabetancourt.wordpress.com/2009/04/01/relevamiento-obras-bormida-yanzon/

Any help appreciated
Pablo Betancourt
http://www.garciabetancourt.com

...you'll have a finer degree of control but I'm afraid optical laws still apply...

http://www.phaseone.com/upload/techcam_rnp006.pdf

I'm not certain as to what distortion is being viewed negatively. Using a 65-75mm lens on a view camera with movements is going to have some of the same problems. That said, keeping the camera level and using front rise on a view camera does provide a little less distortion than the TSE, but nothing that shouldn't be able to be corrected in PS....at least with what fits in the frame.

Do you have an example of a "problem" image?

Didn't notice your links. I don't see anything there out of the ordinary

I suppose that Pablo means the typical wide angle effect when shooting interiors, i.e. that any room appears to be much larger and wider than our eyes perceive it.

Unfortunately there's nothing you can do when your back is already close to the wall. It's a matter of restricted POV and the impossibility to use a larger focal length.

In Pablo's focal length comparison (35mm to 6x4.5) both lenses achieve practically identic FOV.
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cheers, Peter
Germany

pablobetancourt said:

. . . suppose that i put an 80mm on a 6x4,5 full frame medium format camera, it will have the same coverage as the 50mm on my 5d or it will be bigger (as if it was shot with a wider lens with the 5d).

Click to expand...

The angle of view will be roughly the same. However, the medium-format image will allow more Cropping and Enlarging.

For example, a MF body with a 30mm or 40mm wide-angle lens covers approximately the same field of view as a full-frame DSLR with a 20mm or 24mm lens. But you could take the MF image, crop the slight edge distortions, and then enlarge it considerably without discernable loss of image quality.

Your architectural photos are very nice! Have you ever used MF equipment before? I recommend renting a MF body and a couple of lenses (80mm standard, 30mm or 40mm wide) for an extended test of several days or weeks.

It won't matter what format camera you use. The laws of physics stay the same.

You're not going to see any difference in field of view or "perspective" with a MF camera and a lens with a focal length equivalent to what you're currently using on your 35mm camera.

Many thanks guys
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Pablo Betancourt
http://www.garciabetancourt.com