Grey Skies can be interesting

A fun but tiring evening at TG last night meant I wasn't in the mood for going out to do this shot when there were big white interesting clouds moving over the blue sky to get a really good long exposure effect. Instead, I waited until the early evening for the grey clouds and then headed out to the bridges, knowing every other photographer was photographing some steam train.

I actually quite like the effect of using the big stopper with a cloudy sky moving from South to North. This could be an entry for the monthly blip challenge theme of Black and White, lets see.