Archived posting to the Leica Users Group, 2003/04/06
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I am not a huge believer in shutter speeds below the reciprocal of the lens length, but you can eke out 1/15 easily with the ASPH, due to its weight and aided by an electromagnetic shutter release. On Sunday, April 6, 2003, at 01:19 AM, Martin Howard wrote: > D Khong wrote: > >> Now I am itching to ask, >> How do you arrive at the gain in two stops? > > 50mm f/2.0. Largest aperture: f/2.0. Slowest usable shutter speed: > 1/60s (or 1/30s). > 35mm f/1.4. Largest aperture: f/1.4. Slowest usable shutter speed: > 1/30s (or 1/15s). > > The shorter focal length typically lets you get away with one stop > slower shutter speed. Total gain = two stops. > > M. > > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html > > ____________ Dante Stella http://www.dantestella.com - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html