I'd doubt if the autofocus would work in the area of interest you require as monbod has described.
I have been using Pentax Equipment for many years, but recently went on a field trip with a photographic society to a birds of prey centre. They demonstrated in flight all species of birds and my Pentax autofocus system could not keep pace. When at a later meeting our work was projected on screen, members images were spectacular, taken of course on Nikon and Canon equipment. Needless to say I did not show any images, they were not good enough and I am an experienced photographer of many years standing.
I to have felt the urge to go Nikon or Canon, for fast autofocus and longer lenses, but I would not sell my older Pentax equipment as some of the manual focus optics are first class.

And a fast autofocus system

No Volcanic dust there - good photos

I use Eye-one Display 2 in a dual monitor set-up, but it will only calibrate one screen, but I was informed about this before purchase.

This is a superb lens. OK

I have the Pentax LX, K10D and K20D - K7 - video? no thank you.

I agree, any signs of a professional or dedicated amateur and you will be stopped. Posting your photographs could be another problem, they will no doubt say "its copy right protected" and only for personal use.

Excellent definition on the Blue Tit photograph - well captured

I have to concur with Alan Chapman here, you have you own doubts about what to do. Personally I would not post your images anywhere, offer them to the Police for any ongoing investigations, they could, serve a use and offer help to all concerned in the accident.

My apologies Gwyn, I thought it was his "Bigma" he had trouble with.