Thanks for the quick replies! I really appreciate it. Sorry I misspoke about the zoom lenses. A
24-70 2.8 is the lens I've been coveting that belongs to a Nikon friend. Also would love an 85 1.4/1.8 prime which I know Pentax use to make but I have yet to find one. I have been eyeing the 77 limited but I'm not sure it's going to give me enough of a difference over the 50 to warrant the cost. I'd much rather spend the money on a good fast zoom.
I currently am still shooting with the K10d. It's always had focusing issues even after having the auto focus motor repaired. It does pretty good with the 50mm but my Sigma 2.8 zoom is all but useless on it.
I do mainly portraits so I'm after a fast lens for the bokeh. Love me some bokeh.
) Low light is one of the reason I want to upgrade my body but even so, I love shooting wide open.
I'm looking to upgrade either to the K7 or Nikon 700 in the next couple of months. Lens choice is my driving factor right now. Hmmm perhaps I will be happier with the Sigma on a new body?
I really appreciate the replies.