Let’s take three lines of manual focus cameras which still have a very active second hand market today: the Leica R series, the Nikons FM & FE and their derivatives, and the Olympus OM-1 & OM-2 and their “single digit” descendants. Each line contains automatic exposure cameras (Leica R4, R5, R7; Nikon FE, FE2, FA; Olympus OM-2, OM2s, OM4, OM4t), and manual exposure cameras (Leica R6, R6.2; Nikon FM and FM2; Olympus OM-1 and OM-3).
For a given generation of camera, manual exposure models are almost always worth more than their automatic exposure siblings.
Average retail price of a camera in Excellent Condition (source: a reputable specialist of used photographic equipment)
|Brand||Manual Camera||Auto exposure Camera|
|Leica||R6.2: $ 999||R7: $ 550|
|Nikon||FM: $ 190||FE: $ 170|
|Nikon||FM2: $ 245||FE2: $ 199|
|Olympus||OM-1: $ 150||OM-2: $ 190|
|Olympus||OM-3: much more than $500 *||OM-4: $ 235|
|Olympus||OM-3T: much more than $1,000 *||OM-4T or TI: $ 450|