Here in Tucson during one of many monsoon storms I attempted to use the motion detector in ML to photograph lightning. It seemed to work when the T3i detected a change in the light level, that is the camera took a picture. This is my first attempt at photographing lightning and as everyone knows you will never know when it will flash but with ML on the camera it would seem easier to catch the flash. Can anyone offer more tips on lightning photography?
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I use ML to do intervalometer and set up 3-6 second exposures and the intervolometer set for the next second longer. Usually requires very low iso, ND filter perhaps and stopped down to f16 or f22 if there is much daylight left.
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I am thinking this might be outside the dynamic range of most cameras. I wonder w/ the Flash guide number would be for a cloud to ground strike like those in your video - 50,000?. Lightening from a photo view point is a light, the exposure of the objects nearby has to be that of the light from the stroke and each stroke is different. Also there is seldom a single strike, actually made up of several strokes. I have seen video of the "leaders" creeping up from the ground and down from the sky that are amazingly slow given the speed of electrons, etc. Connect and then wham knock your socks off stuff.
Not a lot of advice just some explanation perhaps
Check out this method - completely different way of going about it
http://www.dpreview.com/articles/7002555087/lightning-photography-with-magic-lantern