Archived posting to the Leica Users Group, 2001/07/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Your calculation is indeed correct, but it is not a fair comparison, because using lenses of different focal lengths at the same distance results in different magnifications. It is most appropriate to compare the depth of field at a given magnification, and Noctilux does give the shallowest depth of field of any productions lenses available today. - ----- Original Message ----- From: <shino@ubspainewebber.com> To: <leica-users@mejac.palo-alto.ca.us> Sent: Sunday, July 15, 2001 8:20 PM Subject: Re: [Leica] Should I buy a Noctilux? > > From: "Dan Honemann" <ddh@home.com> > > Subject: RE: [Leica] Should I buy a Noctilux? > > > > Some Noctilux pros and cons: > > > > PRO > > --- > > -- no other lens gives you as limited a DOF, which can be used in very > > creative ways > > not to detract from an excellent list, in actuality, the noctilux > wide open has the seventh smallest depth of field of any M lens, > by my reckoning: > > 135/2.8 1.12 inch at 6 feet > 135/3.4 1.37 inch at 6 feet > 135/4.0 1.60 inch at 6 feet > 90/2.0 1.86 inch at 6 feet > 75/1.4 1.89 inch at 6 feet > 90/2.8 2.60 inch at 6 feet > 50/1.0 3.08 inch at 6 feet > > calculations courtesy of: > http://members.home.net/gillettm/DOF.html > > i just shot 72 straight exposures over a long weekend with the noctilux > wide open, and about half of the next roll. until i got the noct, i never > thought 100 ASA was too fast, and i never thought 1/1000 was too slow! :-) > > -rei >