Hi, I'm perfectly new entry to this forum and like to bring in my thoughts...immediately
Maybe someone picks them up...
Over the past 3 years good Pentax gear has mounted up and at this stage there were only few things (wishes) that came to my mind:
a) more reach (long tele lenses or quality TCs) at affordable price
b) with a good performing DSLR at high ISO
c) and much improved AF features (speeed, accuracy)
Now, b)+c) is settled by Nikon D7000 and Pentax K5 more than sufficiently IMHO. Guess, we saw quite some detailed pics in the meantime.
For a) I don't see competitive lenses of Nikon in my "price league" except the old 80-400 VR. Else I have to go for Sigma lenses in order to cover my needs.
As I have (good) Pentax lenses already and for long tele lenses I'd have to go and get a Sigma, too - where is the deal to switch over to Nikon?
Pricewise I don't see the big difference - in my case obviously always considering long tele lenses or quality zooms - to reach a critical point for a decision to swith over.
Before all the ISO and AF hype around the K5 was in full swing I also considered a Canon 60D or 7D in combination with a 100-400... - and honestly I'm still much in favour of this reasonably light outdoor package with an affordable price tag but will first try the K5 with my existing lenses (DA*300, Sigma 300/2.8+1.4TC, Bigma 50-500).
So, it's not always about the portrait lenses...
I'm going for wildlife that is usually not sitting right in front of me.