Originally posted by kinsale
I mainly do a mixture of events, landscapes and animal portraits.
Maybe should have asked this question earlier to get the answer you posted. Now, it even comes a little clearer, the $100 saved by getting a K-X body will be needed.
Landscapes - IMHO, the wider the better, issue is you won't be able to go too wide because of the money constraints (the wider, the better, the more money).
Events - Clarify this a little.
Animal Portraits - Moving (possible) animals, portrait shots = long end should be minimal 80'ish and can also be around a minimal 120'ish depending on how close you want the portrait work to be (if we are talking zoo work with viscous man eating animals, you will need to go longer).
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This puts you out of the kit lens category - the 18 of a kit lens is good, the 55 is not and will not get you what you need. You could however go with the kit lens and also the long kit lens, not sure how much the package is for that though.
The Tamron 18-200mm may be a good choice - for a K-X body and this lens you may be able to get them both for $700...
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