I'm sure Pentax is surpassed at times, but I'm surprised at your statements concerning the following comparisons:
1) FA 35/2.0 AL versus Zeiss Jena 35/2.4 (M42) I would bet that resolution will be better for the Pentax, especially in the corners at at any f-stop below f4. I'm not sure in what 'overall' qualities the FA would be inferior to the Zeiss, since it also is extraordinarily contrasty and has surprisingly good bokeh (see Takinami's website). 2) The Pentax F/FA 50/2.8 macro is quite an extraordinary lens - what is the evidence, that the Sigma 50/2.8 is better? 3) Curious: do you have the source for the comparison of the A 135/1.8 and Vivitar Series 1 135/2.3? The A 135/1.8 is not quite as sharp as the A 85/1.4 -but I always thought that this is as sharp as 135mm lenses get. Would be interested to know if the Vivitar is really better (comparing same f-stops of course). Knut PS: Carl Zeiss Jena did produce some quite extraordinary lenses! I do think they are great! But the limitations of non-autodiaphragm screw mounts must be considered as well. At 10:18 14.06.02 -0400, you wrote: >I won't even get into which third-party lenses are as good as Pentax; there >are too many. But based largely on testimonials, I'd vouch that the >following third-party lenses are superior to their Pentax counterparts: > >Carl Zeiss Jena 20/4 (M42) vs. Pentax 20/4 or 20/2.8 in rectilinearity >Carl Zeiss Jena 35/2.4 (M42) vs. any Pentax 35/2 or 2.8 in overall qualities >Sigma 50/.28 and 100/2.8 vs. Pentax 50/2.8 and 100/2.8 in sharpness >Vivitar Series 1 135/2.3 (M42 or K) vs. any Pentax 135 (even the 135/1.8 >PKA) in sharpness >Carl Zeiss Jena 180/2.8 Sonnar (latter, autodiaphragm version) and 200/2.8 >Sonnar vs. Pentax 200/2.8 >Carl Zeiss Jena 300/4 Sonnar Auto Electric (M42) vs. Takumar 300/4 in >sharpness, linear correction, and color, and bokeh > >I've sold off six of my Pentax lenses. Of the 12 lenses that I still have, >only three are Pentaxes, and of those, only one below 200 mm. In fairness, >I parted with some of these because I had duplicates and felt that I didn't >need the "Pentax advantage" in that focal length. > > >Paul Franklin Stregevsky >- >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 . - 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 .
