[Brightcolours]

I was looking at samples on the Internet.

I think this lens will start making a lot of sense if the price will drop a bit.

I have not found too many samples on the internet....

http://www.pentaxforums.com/reviews/pent...ction.html

This review shows it to be a quite weak super tele prime (wide open not great, CA not great).

 

http://bbs.kakaku.com/bbs/K0000416085/So...D=1445935/

The middle image shows crappy bokeh when at distance (when the lens does not get a chance to blur the hell out of the background).

http://albertsiegel.blogspot.nl/2013/06/...m-f56.html

These images look ok, but they will look ok with any lens. 

http://dc.watch.impress.co.jp/docs/revie...11192.html

These are the best images I have seen from the lens.

Unremarkable for a lens in that price range.

 

That the Tamron (150-600mm) does not come with a Pentax mount should not be a problem, the money saved will allow you to get any Canon or Nikon DSLR body with it that you might choose, and still have lots of dough left.  B)