Archived posting to the Leica Users Group, 2009/03/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I found the 21/f2.8 Asph a bit soft in the corners wide open -- on film, probably not an issue with an M8). It was great by f4. I shoot wide open a lot so I switched to the 24f2.8 Asph and it performs much better in the corners wide open albeit at the expense of field of view. I look forward to hearing seeing how the 21 Summilux performs in the corners wide open with film. John On 25-Mar-09, at 3:27 PM, Henning Wulff wrote: > First indications are that using the aperture only influences dof > and vignetting; other image parameters are for all practical > purposes the same at any f-stop, and it performs essentially > identically to the 21/2.8 ASPH at common apertures.