How long you should leave the shutter open depends on how bright the yard is.
As Chad says it should be 'pitch dark' for an exposure of several minutes.
What matters is how bright the lightning bugs are relative to the background
(yard, say). A shorter exposure with a wider aperture will get you fewer bugs,
but they will be brighter. Longer exposures will get more bugs, but they
will be dimmer relative to the background. When I tried this, I metered
off the grass, then chose the aperture to give a 5 second exposure, then
stopped down doubling the exposure. More than 30 seconds gave me ugly colors
with Kodak Gold 400, since another severe problem with long exposures is
reciprocity failure. I got some pictures back with grass that turned a sickly
shade of mauvish pink when I tried this.
In article <a9c42696.0407101830.dca2546.TakeThisOut@posting.google.com>,
Bakechad <bakechad.TakeThisOut@ameritech.net> wrote:
>"inetnebr news" <jna.TakeThisOut@inetnebr.com> wrote in message
>news:<40edcb3a$1_1@127.0.0.1>...
>> This year we have a bumper crop of "lighting bugs". Early evening I can sit
>> and watch my backyard look like a blinking bunch of neon mini-lights. I had
>> some Fuji 400 speed film with about three pics left to finish of the roll.
>> So....I set my lens wide open (2.8 in my case) and took three photos at
>> different time durations. When I got the film back I had some sort of nice
>> pics of my backyard, but no lighting bugs showing up anywhere. The heck of
>> it is the backyard was full of the bugs. I know they blink very briefly but
>> I have seen pics that had some in them. Is there a method to this madness or
>> is it just luck? What would I use for film? Thanks for any help rendered.
>>
>> Jim Atkins
>Assuming your yard is pitch black and you do not have a ton of light
>pollution, you could set the shutter on bulb (with a tripod) and leave
>it open for several minutes. That may or may not work becuase as you
>pointed out the "blink is very brief". If the bulb setting does not
>work, I would try higher speed film, 800 or 1600. These speeds will
>absorb the light much quicker than 400. Also, you might be better
>using slide film, because most labs use too much color correction on
>night shots. I use Kodak Elitechrome for all of my night shots.
>Elitechrome only goes up to 400, but you can get variable speed
>Ektachrome that can be pushed as high as 3200.
>Chad<!-- ~MESSAGE_AFTER~ -->
>> Stay informed about: How do I take.........