Archived posting to the Leica Users Group, 1998/12/01
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Hi Eddie. You wrote: >I have a 21mm/F4 R SA and I am pretty satisfied for its performance when >stopping down to f8. However, I found that it will has some strong light >fall off when wide open. I'm surprised about this. I have the same lens (2-cam), and the illumination seems remarkably even corner to corner. Definition and colour rendering are also excellent, even at full bore. Have you had yours checked out on an optical test bench? Maybe there's something slightly out of kilter. The only thing I do notice about the R lens, compared to the 21/3.4 SA M, is that there is a shade more distortion in the extreme corners. But then they're of totally different designs. As a result,, I am interested in getting either >19mm/2.8 or 21mm/2.8 ASPH to replace my 21mm/f4. I just wonder How do they >perform when they are wide open ? Also, which lens has better optical >quality ? Don't know, as I have neither. As I remember, Jim Brick has the 19mm R, so he'll certainly be able to help. Slan Alex Alex Hurst Waterfall Nr. Cork Ireland Tel: +353 21 543 328 (H) +353 21 270 907 (W) Fax: +353 21 271 248 email: corkflor@iol.ie Home website: http://homepages.iol.ie/~corkflor/ Business website: http://www.flowerlink.com/corkflorists