Originally posted by Lord Lucan I'd never heard of a microswitch in the camera hot shoe. What does it do?
You'll find it on the models that have the auto-pop-up feature for the integral flash viz: K200D and *istDL2 have one … the KP doesn't have it, neither does the K-5 or the K70 ...haven't checked all my bodies
If there's an external gun in the hot shoe, it'll activate the microswitch, so's the camera knows not to pop the integral flash up.
Another little-documented feature that you'll have only come across if a) you've got an appropriate camera and b) you've been in a circumstance where you'll have expected the integral flash to activate and it hasn't, as might happen if you've got a generic cover fitted in the hot-shoe