I saw a forecast a few weeks ago for a thunderstorm with lightning coming up, , but unfortunately, i've only got my 7D and 15-85 with me, the nifty-fifty and tc80n3 are in the wrong hemisphere for a few more weeks, so couldn't try anything. But it got me thinking, what's the best way to take nice photos of lightning? (presumably at night, the only other lights would be streetlights in the distance)
I'm thinking shots like http://www.flickr.com/photos/ifordetail/4190253444/ (the position he describes is eexactly the place i was going to go, too) and http://farm5.static.flickr.com/4152/...fa2c5219_z.jpg (but better quality)
Basically, my ideas fall into a few basic questions:
low or medium (800ish) ISO?
wide open, or f8-11ish?
ND filters to make longer exposures on wide open?
1/5second (probably only for handheld 15mm IS), 1-2 second, or 10-30 second exposures?
My thinking is thus:
If i set the tc80n3 to take a perfect (0ev) shot of the night lights with a long/narrow/nd exposure, then if i _do_ get lightning, it will only be 1/10th of a second from a ~10ish second exposure, and maybe the lightning won't even show up?
Maybe set it so that a photo with exactly no lightning would
be underexposed by 1-2-3? ev stops? in that way when i do get a flash,
it might bring the whole average of the photo up to 0ev?
If i set it for about a ~1 second exposure, or even 1/5 (if possible), then maybe the lightning will just blow out everything?
Or another idea is to use a really long bulb, as soon as i see a lightning flash i stop the exposure and start a new one, to avoid blowouts if i get another streak in the same spot on the photo.
obviously i'd be using my strongest tripod, tc80n3 (whether as bulb timer or just in remote release mode), i have no qualms about filling my 16gb cf card up with raw shots to keep maybe 5 of them (or even swapping cards to delete all the non-lightning shots whilst i fill my 2nd card), and high-speed continuous is my friend (if i'm not using a bulb, obviously), and as i have no sealed wide-angle lenses, then an umbrella or station-wagon boot is a no-brainer.
i know there's always the 'trial and error' scenario, but lightning only comes past a few times a year in my part(s) of the world, and i'd rather cheat and ask for advice from someone who knows what they're talking about than lose a good opportunity...
So who here's got a good bit of advice?
and i think i've just greatly increased my respect of film photographers who managed to get good lightning shots on film...