I just tried shooting my first fireworks photos on the weekend. We have an annual competition in our city that runs every other night for 5 nights and I can get a view from outside my place about 8 km away.
My problem is after I took the shots and viewed them on a full size monitor, all the light streaks from the fireworks were zig-zagging.
I don't have access to my photos at the moment but here are the settings I used:
2 to 4 second exposures triggered by pressing shutter button manually
EF 70-300 lens zoomed in at nearly maximum, IS turned off
Mounted old 35 yr old K-mart brand tripod
Any ideas on where I went wrong? I have some thoughts but want to see if anyone with experience can confirm.