Originally posted by Mr_Canuck If the differences between the new HD lenses and the old crappy ones are in any way detectable to the human eye, it will be under the most extreme pixel peeping under 100% controlled environment. Then again, I have not clue because I have not tried them. But this is my prediction... that there are about 98 other factors that will influence the quality of your photograph long before the mysterious and Ricoh-esque HD coating will.
Here's what I'm almost totally sure of though: these new red-banded, non-Pentax-branded lenses are a first step in the re-branding of Pentax as Ricoh. It's about branding and marketing. Period. The HD is just an excuse to do so because image quality is going to be (see above) indistinguishable one from another. You read it here first.
RicohForums.com here we come. (Someday)
I think most of the discussion is premature right now. The new lenses may be much better and worth upgrading to. A year from now, we could very well be praising the "old" Limiteds and the HD versions will be the "new crappy ones". Until they are out on the market and in use, we won't know.
There are a lot of marketing issues at play and that is to be expected. What remains to be seen is what Ricoh is ultimately going to produce as products. As long as they are high quality and the K mount remains, it won't matter to most. Will they become like Sony, who for the most part has tried remove any trace of the Minolta brand from existence, and rebrand everything as Ricoh? So far, they say they value the name and tradition Pentax has in the industry.