John, you are thinking about Doug Busch. His 'de Golden Busch" cameras were, I think, the first of the modern boutique ULF cameras. He had Rodenstock make lenses for those cameras under his own name; there was a feature on him and his 40"x60" field camera in 'View Camera' magazine, c.1990. He did not make a 4x5 camera, though, so off-topic for this thread.
Tin Can, a friend recently acquired a Horseman L-bracket 4x5. It looks pretty heavy and very capable; it might give that monster Linhof a run for its money.
Also off-topic, the heaviest camera I've ever used was a 16mm Hycam high-speed movie camera; that was in the mid-80s when I worked for Kodak. It was almost too much for its Majestic tripod and sidearm.
Here are a couple of photos of other large Chinese studio stand cameras (click to enlarge). There are some similarities, look at the shape of the top of the stand columns for example. I may have posted these before, not sure. I took these photos at the Shanghai Camera History Museum in 2019. They have a very wide collection of Chinese-made film cameras, and some of the old tooling from the Seagull TLR factory. Most of their collection is 120 and 35mm cameras, but there are a few large format cameras. The first of these cameras has a Seagull name plate, and the second one has a plate specifying model "NM8-I" and some Chinese characters that aren't very clear in my photo. Like others said, I imagine that these could have taken film larger than 4x5 with an appropriate back.
very easy to put a 4X5 back on any larger camera
I only have 5X7 for my Deardorf, I will convert to 4X5, maybe
Deardorff S11 New Bellows by TIN CAN COLLEGE, on Flickr
Tin Can
And here i thought my Toyo ROBOS was big and heavy.
A camera obscura with a sheet of 4x5" against the wall.
David, the best information about Douglas Busch and the de Golden Busch lenses will be found in that old "View Camera" article. But whoever was involved, I believe that very few of those lenses were made.
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