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09-02-2007, 03:44 PM   #1
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Location: ENCINO,Ca
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18-55 and 50-200 or Sigma 18-125

Hi, I am new to this group. Hello from Encino, California.
I shoot 90%of my photos with my grandchildren as models. I thought the 18-55 lens was a little soft?? Is the sigm a18-125 much better? It will be almost $125 more than the k100d and the 2 kit lenses?? Thank you for any comments.
Jim Cole

09-02-2007, 05:41 PM   #2
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Location: Manila, Philippines
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Have you considered the Tamron 18-250? I know its a bit more expensive than either the sigma and the pentax but it has better reviews that the other 2.
09-03-2007, 03:24 AM   #3
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Join Date: Apr 2007
Location: Hamburg
Posts: 97
having the DS and K100D and
18-55 kit and 18-125 Sigma:
The lenses are nearly ssame sharpness-wise.
The 18-55 focussing more silently with the manual-focus-option.

The Sigma simply with a longer reach as a walk-around-lens.
As for your needs:
if the 18-55 isn't long enough and you want to take pics from kids it's much faster with a 18-125 than changing lenses.....

The Sigma 18-125 is quite sharp in the 50-100mm-range!
Only the extreme last mm on the long end lacking a bit.
In the 18-55mm-range both lenses perform nearly identically.
09-03-2007, 04:51 AM   #4
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18-125 would have been my choice (actually the 18-250 would be even better1) if I could have afforded it!! I miss the zoom a LOT with the 18-55!!

Last edited by lapeen; 09-03-2007 at 04:56 AM.
09-07-2007, 09:58 AM   #5
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Original Poster
This is a great forum. Thank you all for the very valuable information.. JIM

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