When linear, non-tornadic storms came to my neighborhood, time lapse was the only fun option. I put my 60D and Tamron 10-24 on the cars dash, hooked up my intervalometer, and learned. Here are some "tips to me and thee" for shooting through a car windshield:
Put your lens as close to the glass as possible. Use black cloth (or a black hemp jacket, in my case) to surround the lens, blocking as many interior reflections as possible from the lens POV.
When shooting in the rain, use a long exposure time, say 1/4 second or more. Put your windshield wipers on "super fast", and you'll have images with less rain droppage and fewer wiper blades.
Use low ISO and a ND filter for slower shutter speeds. I shot at F/22 and found out how dirty my sensor was: VERY dirty. Impossible to retouch all the dust spots. F/5.6 would have been ideal for this series.
Shoot fast intervals! I started out at 10 second intervals and the clouds moved way too fast at 24FPS playback. 3 seconds or less seems to work best for fast moving storms.
Feel free to add your own bits of wisdom in the comments...
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