As I do landscapes and buildings much like this mainly, shutter speed isnt too much of an issue, 99.9% shoot at 100 ISO, on a pod if need be. The only time this changes is if there are allot of trees in the shot, as they will blur badly with a long exposure (that can be cool sometimes) I have never had hot or stuck pixels on a long exposure and shoot up to 2 mins. Studio work no probs, just meter lights for 100 ISO (simplicity itself and sometimes a little boring) I have no idea how to change ISO in PS and IMO you probably cant change it in real terms after the fact. I guess the bottom line is, sometimes you have to compromise a clean image to get the shutter speed in some situations. Better to have a noisy image that to miss the opportunity, especially if you think you wont get a 2nd chance. Excellent and top class church shot BTW

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