I have always been a big believer in cable/remote releases. I use a tripod whenever possible and a remote trigger is essential when you want to eliminate any chance of vibrations. I have been experimenting with a technique known as HDR (High Dynamic Range) where you take between 3 and 6 shots of the same scene at different exposure settings (see my humble example under "Customer images") and merge them together into one photo. For this, as well as many other situations, a cable release is absolutely necessary.My only complaint (more of a question) is why, in this age of digital circuity, is this thing so big? It could easily be the size of a thumbnail but it is fairly large. Anyway, I am glad that I have it.