Andy,
You've said that the optical quality of the DA* and Limited lenses is top notch. Are there any image tests yet of these lenses? I'm itching to jump into DSLR fray, and like the feel and feature set of the K10d, but want some verification that the Pentax lenses made for this line are up to the quality of the Canon L's or Nikon's 2.8's. I haven't been able to find any on-line comparisons or testimonials from people who've had both.
Brad
[{POST_SNAPBACK}][/a]
I can say that from my own experience I prefer Pentax lenses. I have never used any Nikon lenses but I do have and have had some Canon lenses. I have two Canon EOS 20D bodies along with the EF 16-35/2.8L, EF 24-105/4L IS, EF 70-200/2.8L IS, and EF-S 17-85/4-5.6L IS. I have also had the EF 24/1.4L, EF 35/1.4L, EF 300/4L IS, and EF 180/3.5L Macro. I am much happier with my Pentax glass. You can look at my blog for the whole list. ([a href=\"http://blog.digitalhub.org/2006/12/my-photography-equipment.html]The Digital Hub[/url])
Specifically, I have been very disappointed with the EF 16-35/2.8L. It is decent optically but flare is a huge problem. I am convinced that Pentax has much better coatings than Canon. The EF 24/1.4L was also a disappointment. The EF-S 17-85/4-5.6L IS is all right but is nothing very good.
I compared my Pentax A* 200/4 Macro lens to the Canon 180/3.5L Macro and I clearly preferred the sharpness and color rendition of the Pentax. I did not do really formal tests or anything but that was just the feeling I got. The best Canon lenses I have had were the EF 24-105/4L IS, EF 70-200/2.8L IS, and EF 35/1.4L. These three were very good. However, I still find Pentax lenses to be at least comparable if not better. The Pentax lenses are always cheaper and lighter. I will have the new DA* lenses absolutely as soon as they are available and I can post more on them as soon as I have them. My favorite Pentax lenses right now are the DA 12-24/4, DA 21/3.2 Limited, DA 40/2.8 Limited, DA 70/2.4 Limited, FA* 80-200/2.8, and A* 200/4 Macro.
I just shot a wedding primarily using the DA 40/2.8 Limited and DA 70/2.4 Limited lenses. I used two Pentax K10D bodies and I was extremely happy with the results. Two of my employees also used K10D bodies along with Pentax FA 28-200/3.8-5.6 lenses and they turned out great as well.
Even this weekend I am at some meetings and I am just carrying around my Pentax K100D camera with the DA 40/2.8 Limited lens. It is a great combo even though it is "only" 6 megapixel. You would be hard pressed to find a smaller digital SLR and lens combination that has the same quality optically.
Anyway, those are just some of my thoughts on the subject. I can give more detailed information if needed.
Bryan