Perspective is everything !
An 8x10 Deardorff, w/ front swings, weighs 12 pounds.
It's max extension: 30 inches. ( the single cell of a 27" Cooke is about 29 inches. That puts it a whisker away from infinity. A 24" Protar is about 26", and can be used except for closeups. This is important if you are likely to use a convertible lens. I forget how old I am. )
Minimum extension is 3 1/2 ". I use mine for 4x5, and have no trouble with a 90mm lens. You get huge movements with its minumum extension.
The movements of a Deardorff limited ? You're joking, right ?
Lens tilt, 30?; lens swing, 20?; Front Rise/Fall, 6 1/2".
Back tilt, 30?; back swing, 20?.
No swings is not a concern for a photographer out of the studio, you shift front and back if you need shift... which you shouldn't. You gain stability and compactness.
And, to be fair to the C-1, even if it's nickname is 'big moose', you're looking at the comparison wrong way round. The Deardorff is rugged because it's made from instrument grade mahogany, and steel, and is a perfectly evolved design. Again, it is light.
The Calumet is LIGHT for what it is because it is designed and made extremely well, and made of magnesium.
The simple reasons to get the Deardorff over the C-1 are: compactness, short lens facility, and ease of use. If you use lens, up close, longer than 20 inches, the Deardorff needs an extension, the C-1 doesn't.
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