18-xxx mm lens

Started Jan 11, 2014 | Discussions thread
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Itzik Regular Member • Posts: 124
18-xxx mm lens

Hi

My usual gear for outdoor & landscape includes the Pentax 16-50mm on the K5, with the Pentax 55-300mm & Sigma 8-16mm in my bag.
For longer hikes, this is getting heavy...
I am willing to sacrifice some performance for weight reduction, getting a 18-xxx mm as a single lens for such trips.  18mm at the wide end is mandatory for me, 200+ at the long focal.
Is my choice limited to one of the following: Pentax SMC 18-270mm, Tamron 18-200mm, Sigma 18-200mm & Sigma 18-250mm? are there others?
Which is the preferred lens in terms of optical performance & build quality?
Price is not my primary concern.

Thanks, Itzik

Pentax K-5
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