Originally posted by PaysonAZTim Those hikes are usually with an Australian Shepherd.
Presumably this is a dog rather than sheep-minding bloke from Oz. Never heard of the breed. The most notable Australian breeds are Blue Heelers and Kelpies, but I don't suppose it's either of those.
Originally posted by PaysonAZTim Compared to the kit lenses that I use right now, what could I expect out of the 18-250, 18-270, or 18-300 mm lenses available?
The Sigma 18-300 seems to be the most highly rated of these superzooms. I used to have the 18-250 in its original Tamron form. It was a step up from 18-55, but optically well behind my current go-everywhere combination, the DA 18-135 and DA 55-300. The superzooms are very convenient, but I'd agree with Tom (@Ramseybuckeye) that one of the 55-300 lenses is a better option for your telephoto needs.
I've got both one of the three screw-driven AF versions of the 55-300 and the PLM version (which has a different optical formula). The HD DA 55-300mm f4.5-6.3 PLM WR is the one to get if your budget will run to it - not only is the AF much much better but the rendering is nicer too. It's slower (narrower maximum aperture) than the screw-driven ones, but better wide open. But if that's outside the budget, the HD DA 55-300 f4-5.8 WR is still a very good option (this is optically the same as the two other DA 55-300mm f4-5.8 lenses, except that it has HD lens coatings) and should be significantly cheaper than the PLM. Resolution is quite comparable to the PLM. Here are samples taken with the two different versions that I have:
Pentax DA-L 55-300mm f4-5.8 sample images - Des(Australia) - Flickr Pentax HD DA 55-300mm f4.5-6.3 PLM sample images - Des(Australia) - Flickr
Sounds to me like you could use the weather resistance too. None of the superzooms is WR.
As for the wide angle options, I think for real estate shots you really need the capacity to shoot 12mm or wider plus the flexibility of a zoom. Here are some shots I took (just handheld shots for our own records, not for publication) when we were selling our house some years back, taken with the Pentax DA 12-24 f4 at 12mm.
(Note that the decor was supplied by the agent for the sale. We thought the hide and skull were hideous.)
The DA 12-24 is a very good lens. But in the PF five-way comparison between the two Sigma 10-20 models, the Sigma 12-24, the Tamron 10-24 and the Pentax.DA 12-24 there was a case to be made for each of them:
https://www.pentaxforums.com/reviews/pentax-12-24mm-lens-comparison/introduction.html https://www.pentaxforums.com/reviews/sigma-10-20-comparative-review/introduction.html
The Sigmas and Tamron may be cheaper on the secondhand market than the Pentax.
Last edited by Des; 01-19-2019 at 09:43 PM.