Re:Dumb Things Camera Companies are Still Doing
by jasomill on Wednesday September 27, 2017 @09:41PM
(#15353886)
I'll second this, and note that this is a problem more significant in practice than in theory.
Speaking as a physically inept "software and pure maths" person with consequently no authority whatsoever on this matter, I believe this is mostly on account of the usual "thumb-screw and rubbery no-slip pad" construction of typical non-camera-specific mounting hardware: while it's hard to imagine any lens without its own tripod mount is capable of enough torque to loosen even a hand-tightened bolt, as soon as the non-slip pad ceases to be effectively rigid, very little torque is required to loosen the bolt. And as with most (all?) "rubbery" materials, stiffness of a given non-slip pad at constant compression is a function of temperature.
Speaking as a physically inept "software and pure maths" person with consequently no authority whatsoever on this matter, I believe this is mostly on account of the usual "thumb-screw and rubbery no-slip pad" construction of typical non-camera-specific mounting hardware: while it's hard to imagine any lens without its own tripod mount is capable of enough torque to loosen even a hand-tightened bolt, as soon as the non-slip pad ceases to be effectively rigid, very little torque is required to loosen the bolt. And as with most (all?) "rubbery" materials, stiffness of a given non-slip pad at constant compression is a function of temperature.