The J.H. Dallmeyer Wet Plate camera is a 19th-century British wooden plate camera made for the wet collodion process, a photographic technique that required coating, exposing and developing a glass plate while still wet. Dallmeyer was a London optical maker active in the Victorian era, and cameras carrying its name are collected today as early photographic apparatus rather than working user instruments.

With only two UK auction hammer results on file, pricing for a Dallmeyer wet plate camera is thin and condition-driven, with recorded sales ranging from £400 to £1,800. At saleroom level today, what one is worth depends heavily on completeness — original lens, plate holders and the maker's plate all lift the price it sells for, while incomplete or heavily restored bodies sit at the lower end of that range.