I pose this question to the brightest members of the group. Those who have or know how long the back springs are. I know they will vary according to age, manufacturer, and material so there is no one single right answer. No anecdotal comments like "I once met a back spring at a bar and. ", or "I don't know but I have a buddy who saw one once". Just your direct answer as best as you can. Like, "My camera has " springs." Thank you.