This reminds me of the discussion of "Good, Fast, or Cheap: Pick 2". In lenses it seems to be a few more than 3 categories, but you still can't have them all without paying a metric buttload of money. "IQ, small/light, Fast or Cheap" perhaps?
IQ, of course, can involve a number of things including sharpness, color, bokeh, etc. The factor that seems to make the others more difficult is "Fast". That requires larger diameter everything, which is what makes lens weight go up. On longer lenses, internal focusing might be a factor (where you don't want the lens to grow physically longer by a lot). If you want to see how beautiful a "slow" lens can be, snag a Tele-Takumar 200mm f.6 preset. I got one from a PDML-er years ago for $15 because it had oily aperture blades. (Those make no difference whatsoever on a preset lens.) The sharpness and color-rendition of that lens in bright sunlight is superb and you won't find a smaller/lighter 200mm anywhere.. And who needs a fast lens in bright sunlight? So it all depends on what you plan to do with a lens, whether it is an appropriate choice or not. For the ultrawide end, you are going to have to improve on the IQ of the Sigma EX 10-20mm f4-5.6 DC to get my money. My favorite/most-used lens. The extra stop or two of light would come in handy, but at what cost? Darren Addy Kearney, Nebraska On Fri, Oct 27, 2017 at 10:03 AM, P. J. Alling <[email protected]> wrote: > Actually they look like all the other lenses, fast highly corrected lenses > put on bulk like Arnold Schwarzenegger training for a body building > competition. Personally I prefer a smaller package sacrificing ultimate > sharpness and uber correction. > > > On 10/27/2017 10:25 AM, Collin Brendemuehl wrote: >> >> We are long past the time for retiring the FA50/1.4. And the FA35/2. HD >> coatings are critical. >> >> Has SDM been made reliable? All-weather (AW) looks like useful thing. And >> really expected these days. >> >> I hate to say it, but they *look like* Tamron packages. Hope I'm wrong. >> >> >> >> > > -- > America wasn't founded so that we could all be better. > America was founded so we could all be anything we damn well please. > - P.J. O'Rourke > > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. -- “The Earth is Art, The Photographer is only a Witness ” ― Yann Arthus-Bertrand, Earth from Above -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
