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Light activated shutter activation

PostPosted: Sun Jun 25, 2017 4:43 pm
by midan
I want to take pictures of lightning. I have read about a few methods that seem to be a bit of a hit and miss. I have cobbled up the following circuit that uses the same connections as the wired remote.
It woks but I would like to know if it could damage the camera. So far the test camera, a D90 has not had any issues with it. However, I value your opinions.

ADDENDUM: I have long since decided that there is no issue with this circuit. I have been using it regularly on my D7000 and D7200.

My project blog page ( in French and English ) is here if you are interested:

This is the circuit:

Notice: There is no external power source.