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Forum: Pentax SLR Lens Discussion
07-13-2011, 03:18 PM
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The 16-45 shows better corners.
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Forum: Pentax SLR Lens Discussion
07-13-2011, 01:25 PM
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I have a mix of primes and zooms and will always have both. I tested a 16-50mm at 50mm and f2.8 against my FA 50mm. The 50mm murdered it, and still had two more stops. So in this case, I get speed the zoom can't match and better performance. I have the FA 35 f2 for the same reason, speed and IQ vs. a zoom. The DA 15mm and DA 40mm are not that fast, and my 16-45 is in the ballpark for sharpness at f4**. The Limiteds have better contrast, but that's easy to make up. I bought the Limiteds strictly for their size. I carry them with my K-x in a little fanny pack, or to supplement the 18-135mm. The 100mm macro gives me macro capability beyond what any zoom can do. I have a Kiron 28mm f2 and Sears 135mm 2.8 for their speed, and just for fun and variety.
In summary, I use primes for specific characteristics I can't have with a zoom; whether it's size, IQ, performance, speed or rendering. I only change a zoom out if I'm shooting something formal or need the widest apertures. For day to day photos, I'm happy with the IQ from my zooms.
** My 16-45 at 16mm is actually a little sharper than my 15mm, as shown here: https://picasaweb.google.com/bonhommed/Comparo?authkey=Gv1sRgCLOD9LjmoOKTlAE# |
