At 22:13 27-12-2001 -0500, you wrote: >From: Joseph Tainter <[EMAIL PROTECTED]> >Subject: Two Sigma Zooms > >I've been thinking of extending my lenses to include a 100-300 zoom. One >weakness of these seems to be softness at 300 mm. Sigma has a couple of >lenses that I find interesting: > >1. 100-300 f4. It's a constant aperture f4 and was reviewed well by Pop >Photo, but is big, heavy, and expensive. I carry a heavy camera bag as >it is. > >2. Sigma 70-300 f4.0-5.6 APO. I dug out Pop Photo's review of this in >the March 2000 issue. In their MTF tests, it seems to do quite well at >300 mm. It is also lightweight and $219.00. Do I want to spend nearly >$700 more for one f-stop at 300 mm.? > >So, I'm wondering what users of lens #2 think of it's performance at 300 >mm.?
I have the Sigma 70-300 f4.0-5.6 APO and like it very much. I have shot a lot with it at 300mm and haven't noticed any particular softness, but must admit I haven't made any enlargements from the photos taken at that focal length. There have been times (like today) when I have wished that I had that extra stop so I guess it depends on what you are going to be using the lens for which will tell you if you need the extra stop or not. (and $700 is a lot of money!) As for the differences between the APO and the DL, all I know is that the day after I bought the APO version I read a review in either Amateur Photographer or Practical Photography (UK publication) which awarded the DL version more points because of its value for money. I can't remember how the two compared at full stretch though. Maybe someone else read the same review and has a better memory than I. Wendy --- Wendy Beard Ottawa, Canada mailto:[EMAIL PROTECTED] - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
