Originally posted by Des OK Silvia, that's a good indication.
Since you are looking at a new camera, you have three current choices: K-1ii, KP and K-70. (You might find a new K-S2 or K-3ii somewhere in Australia, even though they are discontinued, but I haven't seen one for a competitive price. We'll put them aside for the moment.). . .
If you want a telephoto lens with really fast and quiet autofocus, take a look at this one:
HD Pentax-DA 55-300mm F4.5-6.3 ED PLM WR RE Reviews - DA Zoom Lenses - Pentax Lens Reviews & Lens Database
(It's known as the PLM, because it has a Pulse Lens Motor for autofocus.) . . .
The PLM won't work on your K200D (or any other pre-2013 model camera), but it will work on any new Pentax camera that you get. . . .
slight clarification to an excellent post
" *This lens uses an electric focus-by-wire system and will not focus (even manually) on cameras older than the Pentax K100D super (2006).
**Because the aperture is controlled electronically, this lens can only stop down when used with compatible cameras.
The Pentax K-50, K-S1, K-S2, K-3, K-3 II, and K-1 are supported via a camera firmware update; the Pentax K-70, Pentax KP and all 2017 or newer bodies will work out of the box. The aperture diaphragm will always remain wide-open on unsupported bodies.
In an nutshell, this lens fully compatible with recent DSLRs but shouldn't be used on older bodies or film cameras. "
Read more at:
HD Pentax-DA 55-300mm F4.5-6.3 PLM WR RE Review - Specifications | PentaxForums.com Reviews
the link is to the " in depth review "of the lens