I know about the 15mm vs the 30mm and vs the 20mm of the Cambo WTC.
But I checked files made with the Schneider 35mm XL with 15mm shift and it wasn’t really good in my eyes.
Then I saw the 15mm shifted files from the Rodenstock 35mm HR - very good!
The 40mm Rodenstock needs around 20mm shift to get a 28mm full frame view.
So The Cambo would be needed, 20mm shift and cheap but with expensive lenses. And I think the 35mm with less shift is better than the 40mm with more shift.
I never used technical cameras. I have a Leica M with a 28mm PC lens which allows me 10mm shift.
What I don’t know is the workflow of focusing. Arca has a focus ring or the lens has one?
With the Hasselblad CFVii50c I don’t need the cobal0 version - right?
The Factum has now geared shift - how does this work?
How does the tilt work?
A lot of questions...
Thanks
Schneider 35mm XL has indeed big image circle- 90 mm- but it cant be used fully really. As all Schneider lenses the 35 mm has extremly decrease in image quality at the edges, this is the lens design. Also the color cast on schneider 35xl in combination will 50MLPixes as yours back and 100ML Sony Chip will not allow significant movents.
ALL Rodenstock HR lenses are different lens design that delivery best sharpness till the end of the image circle and have not much problems with the color cast. So for your back Rodenstock HR lenses are the first choice.
The 40 mm Digaron W is made specially for the bigger sensors, where you need more image circle.
Also for the little 33x44 mm sensor it could be too long.
the differnace in the angle between 35 and 40 mm is strong. I own 32, 35 and 40 and 43 mm and they all have Advantages.
Afcourse it all depents on your way of work, your preferences...
But 32-35 mm is the wide angle you will need- in my work maybe 70 %.
How the arca work:
- the focusing ring is build in the camera body. This focusing ring is 7 time more
precise than the standart focusing mount. This is very special for Arca R line. therefore you dont need the focusing mount as Cambo-Alpa do, and therefore is the price for arca R mount not so expensive.
- the tilt-swift is easy, you have a knob under the focusing ring, just use it.
Usuelly the the lens should be in Copal shutter- most of them are in Copal shutter, so you can use them with all backs and are the cheapest solution.
Only modern backs can use aperture mount from rodenstock and the new mount are not cheap.
Arca cameras are really first class but not cheap.
If you want cheap solution so maybe Cambo Actus would be graet also ( little classic technical camera)
or Silvestri ( similar like Cambo WRS-Alpa, but cheaper).