Originally posted by netuser One question, Why did you went with the sigma lens and not with the Pentax version ? (assuming you got it new)
Numerous reasons. I only got my D-SLR in June of 2007 and was going on Safari in August. Tho I researched cameras extensively before my purchase, I didn't do one stitch of research on lenses before hand. So I had a lot of learning to do of what I might need. The few weeks I had to gear-up didn't leave me enough time to start w/a used FA*, whether 300mm or the 80-200 zoom... (and there were no 300/2.8's on the market during that time) let alone the risk of getting something used that had a problem.
Then also, Sigma was having production delays. They re-tool their operation to make a series of lenses in a particular mount, then move onto another; and in 2007 Pentax was
very low on their priority list (probably the same still tho). There were
no 100-300/4 zooms to be had in the USA. There was
one sitting at Sigma USA, and a kind woman in marketing let me know if I went to Cameta I could put a special order in for it. I did so, but Cameta sat on my $500 down-payment 1 week before literally calling down the street [I, Cameta, and Sigma USA are all on Long Island] and ordered it. By then it was gone. I was both livid and dismayed as it was only a week or two before I was leaving for my epic journey. The kind young woman in marketing must have took pity on me [or felt a bit of guilt in mentioning I could get the 100-300/4 by going thru Cameta, and then Cameta screwed me by delaying the order] because - after sort of talking me into the 300/2.8 - she set-up a special direct purchase thru 47th St Photo for me. ... and that's why & how I got it.