A relative of mine is taking a beginning photo course which requires shooting 100 ISO slide film for a group assignment at a specified outdoor location. They're expecting bright daylight - although it is frequently overcast and/or rainy this time of the year in Florida, where she lives. Obviously, the assignment is designed to put in practice the classroom lectures on manual exposure, focusing, metering, handheld techniques, etc. Regardless of technique, however, how can you avoid image blurring from camera shake at 100 ISO, w/o a tripod? I'm not a steady handheld shooter myself and always shoot at 200-400 ISO negative film, so I couldn't offer her a considered opinion on this matter. But I do believe that at ISO 100 you should definitely use a tripod, even when shooting sunny 16. The chances are that it'll be a bright day -but come on, 100 ISO handheld? I suspect that there's going to be a lot of blurry slides produced that day. Oh, no doubt they will learn something -- and that will be precisely what General Mapache learned in the film The Wild Bunch - "put it on a tripod!" Well, maybe that's the real purpose of the group assignment - to introduce them to tripod use.