West Yorkshire commercial photographer: I was on a small job for MAS Design, an Otley based architectural practice, in Middleton near Ilkley to survey a barn ahead of a proposed conversion to residential. I was called in to determine whether or not there are bats or barn owls using the building ahead of planning validation. I’m often called in for this type of work as I began my photographic career capturing wildlife images (see Wildscenes for my work) and I have a lot of ecological experience but I decided while I was there to capture some architectural images of the building in its present state. I used a 10stop ND filter to create a long exposure in order to capture movement in the clouds. However, it was a very bright day and I could only really manage an exposure of around 50seconds, even at f/16! This is not quite long enough to get the clouds to go very streaky across the sky and is merely giving an effect almost like motion blur. I’ve only just started experimenting with long-exposures so I’m sure I will work out a formula soon to get me to around 3-4 minute exposures or longer. The idea is to capture soft skies or still waters around a static object. I am heading to Rotterdam shortly for 4 days and will try some long exposure techniques on the fabulous modern architecture there. For this image I used a Fuji X-T1 and a Fujinon 14mm lens.