Originally posted by fotograffiti Pretty awesome pictures. Last time I shot lightning I did it with a non-WR camera. I'm hoping the next time I'm shooting in the rain it will be with a water resistant Pentax. Did you just open the shutter and wait for the lightning to come? That's what I did. Opened the shutter for 8 seconds and hoped for the best. It worked.
Yes, I was limited to shorter exposures because of the ambient light on the water tower. I didn't want to blow out the scene, so I went with low ISO 200 and a narrower aperture, F9 to F10, than I normally go with. I was still limited to six seconds before I started blowing out the water tower. If I'm out in a rural area where I don't have these lights, I'll open the shutter for 20 seconds or more depending on the frequency of the lightning.