Archived posting to the Leica Users Group, 2007/06/07
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]seems interesting, but why is the lens so darned slow? -rei On Jun06 22:27, mehrdad wrote: > nathan did u also look @ the sensor size difference between the grd > and dp-1? the dp-1 is APS size and very capable @ shooting high iso if > it is the same as sigma's latest sd-14 camera. people are compering > the results of the sd-14 with the canon 5d. > > On 6/6/07, Nathan Wajsman <nathan@nathanfoto.com> wrote: > >I printed out the PDF from the web site and drooled all over it until I > >realized that there is a fly in the ointment: the slow (f4) lens. > >Compared to my Ricoh GRD's f2.4 lens, this means that the Sigma is about > >1 1/3 stops slower. Or put in another way: if I am in a situation where > >I need to use the Ricoh wide open at ISO 400 (the highest usable ISO on > >the GRD in my opinion), I would need to set the Sigma to ISO 1000 in the > >same situation. So while I am sure that the Sigma's sensor is superior > >to the Ricoh's at the same ISO, that is not the relevant comparison for > >me. The Sigma at ISO 1000 would need to be superior to the Ricoh at ISO > >400. I think I'll wait for some reviews... > > > >Nathan > > > >Douglas Sharp wrote: > >> The photographic magazines in Germany have it priced at 700 Euros - > >> not cheap for a P&S - but I think I want one anyway :-) > >> Douglas > >> > >> Jeffery Smith wrote: > >>> Some of us are waiting on the Sigma DP1. Sigma has given it its own web > >>> site: > >>> > >>> http://www.sigma-dp1.com/ > >>> > >>> but so far it hasn't been released. > >>> > >>> Jeffery > >>> -- Rei Shinozuka shino@panix.com Ridgewood, New Jersey