I am a new member who joined because of how helpful I found this forum.
My camera bag was stolen 2weeks ago (*ist DS, tamron 28-75 Di, Sigma 70-300 apo macro, pentax 50 1.4 and 500 flash gun plus many other countless accessories) The upside was my wife took pity, and I just purchased the K10d (arrived last week) and I did not have my FA 28-70 f2.8 in the bag.
I am going to supplement the DA 50-200 f4-5.6 with a faster telephoto prime for portraits. Does anyone have experience with either, preferably both, the 77 and 100 macro. Given I will be using on the K10D the focal lengths will become 118 and 150. The 100 focuses more closely but is a little slower; half the time I will be using this lens handheld.
I found this great site which compares the two:
http://www.pbase.com/alinla/sort_by_lenses
I have the 77 backordered but am debating canceling the order. I am torn by the 100's lower price, over 200$ difference. I doubt I would use the Macro feature much. Any additional advice or features to consider would be most welcome. I know there are decent 3rd party lenses in this range; but I want to stick with Pentax, in part to more easily use the SR feature on the K10D and minimize compatability issues.