Archived posting to the Leica Users Group, 1997/07/31
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]In einer eMail vom 31.07.97 15:40:25, schreiben Sie: << Is this because of ghosting or some other problem that I haven't encountered? >> If you are using fill flash, you usually like to use a time/aperture combination which is suitable to the amount of ambient light. If - for instance - you are using a Leica M6 at the beach and want to fill-flash a pretty face under a sunshade umbrella, you can only use speeds up to 1/50 s. This would result in an aperture of 16 (Iso 100 film speed). Even a 90 mm tele would have quite a large dof range at f/16, which could be annoying for your potrait shoot. Besides this your flash range will drop down to four or five feet at such a small aperture. If your camera is capable of shooting flash at 1/250 s, this means a gain of two f-stops, you can shoot at f/8, which increases flash range and the separation between object and background. Second benefit of a short flash-sync. is in sports and studio photography. If the scene is just too dim to shoot without flash, you sometimes get blurred images, because you have the razor sharp flash image and an unsharp ambient light image on the same frame. If your camera can flash with shorter times, you can suppress unwanted ambient light better. Medium Format studio cameras usually have leaf shutters in their lenses which can sync up to 1/500 s (Rollei 1/1000 s). These cameras are just perfect to use with studio flash equipment. Frank