which lense next
Regards
David
Flickr
Nicola's Apartments, Kassiopi, Corfu
Some cameras, some lenses, some bits 'n' bobs
AKA Welshwizard/PWynneJ
Assorted Pentax/Nikon/Mamiya stuff
Generally the larger the range the more you compromise on quality, but that said none of those are poor and make good travel lenses.
(For info, a single lens doesn't need the 'e' on the end, i.e. it's just lens!

John K
I've never owned the Tamron version but have read its worth bypassing the 18-200 as the 18-250 is better.
David
OP, if you've got the money then get the 18-135, its got a great reputation. If not the sigma 18-250 may be the way to go,but wllojld you really keep the 55-300 in that case as well?
My Guides to the Pentax Digital Camera Flash Lighting System : Download here from the PentaxForums Homepage Article .... link
Pentax K7 with BG-4 Grip / Samyang 14mm f2.8 ED AS IF UMC / DA18-55mm f3.5-5.6 AL WR / SMC A28mm f2.8 / D FA 28-105mm / SMC F35-70 f3.5-4.5 / SMC A50mm f1.7 / Tamron AF70-300mm f4-5.6 Di LD macro / SMC M75-150mm f4.0 / Tamron Adaptall (CT-135) 135mm f2.8 / Asahi Takumar-A 2X tele-converter / Pentax AF-540FGZ (I & II) Flashes / Cactus RF60/X Flashes & V6/V6II Transceiver
This lens is superb and if you need a wider angle, move back. If you need more tele, move forwards.
Gives you some exercise to and makes you appreciate your pictures even more, than just standing on one spot and shooting indiscriminately.
Regards, Horst
David
Pjy123
Member
Kibworth harcourt