Archived posting to the Leica Users Group, 2002/01/13
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]This is a good point...... lengthening the flash is a possibility to make the flash synch across the slit.... but the length of time you must keep the flash in light mode is quite long, and would give a lot less light output.....but of longer duration, so the integration of that light is slightly improved.. you do not lose as much as you might first think.......It would require a custom made flash...... My old Strobonars would not work with it in this mode...... Does anyone know the time it takes the M6 shutter to move accross the focal plane in speeds of 1//125 and 1/1000 of a second? ( those are the slit shutter speeds....) Frank Filippone red735i@earthlink.net Canon EOS range of cameras which have what they call FP flash which allows the flash to synchronise at all shutter speeds (up to 1/4000th second on my EOS 50E - probably higher on the EOS 1V). It just so happens that in the current edition of EOS Magazine, dated December 2001, there is an article which describes FP flash. Basically, the flash duration is extended to the length of the exposure, e.g. 0.25 milliseconds at 1/4000th second shutter speed. This means, though, that the intensity of the flash is reduced so it's most beneficial for fill-in flash where the subject is not too far from the camera. - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html