I've used the Kood P-size polarising filter for a few years (£26-ish)
SRB Film supplied it.

Other users have said the Pentax AF system is not confused by the (cheaper) linear polarisers (about £18 in P-size Kood)... that's worth knowing (though I haven't personally tried it)

Matt

The 16-45 is a superb lens.

The new 17-70 was dubbed as its replacement (and is similar in size). Personally I'd prefer the extra reach of the 17-70 (now I mainly use the older SMC-FA 24-90 for more than half of my shots).

And as has been said, £199 with a £25 cash back offer is an absolute steal!!
(FWIW, the 17-70 has a £50 cash back)

I nearly duffed in the front element of the 16-45. It had a nice slim Hoya Pro UV filter for "protection". The camera was knocked off a seat - in its padded case - and the filter splintered into razor sharp shards Having done that twice in different circumstances I prefer to keep the lens hood on instead of using a filter But that's just my opinion

Matt

Whatever you take... practice first!!
You should know your equipment inside-out - especially how to get the best out of the flash.

(And shoot RAW - it'll save time and pain in the long run!)
Matt

Ah! Interesting The current crop do. Are yours glass ones?

Ha ha ha I meant that you can see it without having to put it on the camera etc

Matt

Just stack two filters together and you'll see it Just look through with your eyes and it's very red/magenta!
I have found the Kood, HiTech, and Cokin P all have this cast. The Cokin Z-Pro are better, but not completely free of magenta cast.
That said, sometimes the colour cast adds to the shot
Matt

The SMC-DA 12-24 will fit perfectly. SRS have it for £499 and Pentax are giving £50 cash back
Matt

Battery-force.co.uk at £69.95

Tantronics.co.uk at £64.99

Fotospeed.com at £56.98 (may be +VAT???)

Give some of them a ring
Matt

A bit of Googling:
Cameraking.co.uk at £80.

Here's an image with camera

Still looking though

EDIT: definitely give Chris a call

Matt

Pices91 - just a thought! I'm not sure the SMC-DA 16-45 is covered in the Pentax cash back You may have to go for the SMC-DA 17-70 (which is rather tempting!!) - that's definitely covered.

But Chris @ SRS will help you on that
Matt

No problem at all
I have Lightroom and Photoshop CS2... There are things that could be improved with the SP workflow... however, I haven't been able to beat the overall image quality of SPDS3 (especially when it comes to high ISO work).
Personally I do the majority of adjustments in Silkypix and then "polish off" and do creative work in Photoshop
Matt