The Blair Cameraco. Lucidograph is an early plate camera from the late 19th century, produced by the Boston-based Blair Camera Co. It was a wooden-bodied field camera intended for amateur and travel photography in the era before roll film became dominant.

Sales data for the Lucidograph is extremely thin: a single Christie's auction record from 1998 shows a hammer price of £862 at saleroom level, which excludes buyer's and seller's commission. With only one verified UK auction result on file, today's value is hard to pin down with confidence, and what a Lucidograph sells for now would depend heavily on completeness, condition of the woodwork and bellows, and the presence of original plate holders. As a scarce early Blair item, it sits in collector territory rather than the user-camera market.