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Old Jun 15, 2007, 10:21 PM   #1
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I'm thinking of buying a Pentax K100 D. I've read some good reports - and others that are not so good - of the Sigma 18-125mm F3.5-5.6 DC that somebody bought for his K100 D.

I want a lens with similar specifications but I want to make sure I get one that will give good resolution.

How does this Sigma lens compare with other similar lenses that fit the Pentax, including Pentax's own lenses?

I'm not interested in action shots, nor in indoor shots nor in shots in poor light.

My main interest is inlandscapes & in shots of gardens including details in gardens & and in getting the best resolution.

What lens would you recommend?

Herb
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Old Jun 15, 2007, 10:27 PM   #2
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Herb wrote:
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My main interest is inlandscapes & in shots of gardens including details in gardens & and in getting the best resolution.

What lens would you recommend?

Herb
Well you have two polar opposite requirements and two very DIFFERENT THINGS going on there!!!! How good do you want either to be?... or both just compromises?

Landscape just requires great, sharp infinity focus.... many lenses do reassonably well. (semingly easy but where inexpensive zooms often lack and short primes really SHINE.

Gardens require very good close up focus (a more opticaly critical thing) and workable DOF.... and again where actualy a short prime will also likely do better than any zoom.... how much do you want to carry and learn what is needed for a given situation? (Even if not $$$$$ lenses)

You might...*****atch that..... IF serious about the garden end... You DO actually want to consider two different lenses.....

While zooms have gotten MUCH better (especially on the low end some even with decent 1:2 macro) in the last decade there just plain is NO ALL IN ONE lens..... good compromises at best.

OH and PS NOT talking $1000+ lenses... just different funtion and sweet spot lenses non of which might be over $2-300..... you want to go minus AF (actually OFTEN a DETRIMENT CLOSE UP) ...pick up a used A lens MUCH less (under $100 likely) and still all AE functionality.
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Old Jun 16, 2007, 3:33 AM   #3
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To do the general sort of photography that you indicate, I would go with the 2 Pentax Kit lenses.

This gives you 18-55mm Which is wide enough for most landscapes, plus it focuses close enough to fill the frame with a flower, or a butterfly. At the other end, the 50-200mm is a great walkabout lens for everything else.



Darren


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Old Jun 16, 2007, 5:18 PM   #4
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Hayward & Daren,

Thanks for your thoughts on this. The consensus (your advice plus mtngal's response to my accidental second posting) is steering me in the direction of two lenses.

Herb
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