The Newman & Guardia Trellis is an early British folding plate camera, produced by the London maker Newman & Guardia, which specialised in precision hand-and-stand cameras in the late 19th and early 20th centuries.

Sales data for the Trellis is extremely thin: a single recorded UK auction hammer result from December 2010 saw one sell for £550, which represents a wholesale saleroom level rather than a retail price. With only one data point, today there is no meaningful range or median to cite, and the value of any individual example will hinge heavily on completeness, mechanical condition and the presence of original fittings. Buyers researching what a Trellis is worth or sells for should treat the £550 figure as indicative only.