Archived posting to the Leica Users Group, 1999/06/17
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Jim Brick Wrote: >>>>>>>>>>>>>>>>>>>>>> In the 1/4, 1/6, 1/8, 1/12, 1/15 shutter speed ranges, moving a mirror and diaphragm WILL cause unsharp photographs in ANY camera (any camera that does that). Especially with long lenses. Tripod or not! The longer the lens, the worse the problem. MLU is an essential part of professional photography. To ignore it is un-professional. <<<<<<<<<<<<<<<<<<<<<<<<<<< ANSWER: When I get down to these shutter speeds, or anytime I think mirror lock up is needed, I grab the obvious choice...my rangefinder. Even still, not all professionals use such slow shutters speeds. Clearly the F100 is designed for the sports/event/PJ photographer. There is nothing unprofessional about this design decision not to include mirror lock-up. The camera is merely designed for a different kind of professional. The F100 lacks mirror lock-up for several good design reasons. Not the least of which is the ability to produce a cost effective and reliable single-pair shutter curtain. At slow shutter speeds the advanced Nikon flash can correct the vibration problem for the uses described above. Nikon does indeed make cameras with mirror lock up and mirror prefire for those times when such a feature is needed. Just because some professionals need mirror lock up is no reason to include mirror lock up in every camera. To follow that line of reasoning would imply that every professional camera should have every conceivable feature. Come to think of it, the F5 has just about everything, but a range finder;-) Dan Brown -- AKA Dan(4) Fort Worth, Texas \_ _/ \/