If you believe that argument you must buy nothing other than 3 Element lenses

I've never seen anything that shows UV filters doing anything other than improving image quality. These two sites confirm that link
and link

Recent tests I've done with a Tiffen Haze1 show a big improvement on landscapes particulary at the edges where contrast is lower.

If it wasn't for lenses in the past being protected by filters we wouldn't have anywhere near as many lenses available now with un-scratched glass

I fell of it once!....... didn't see it!

This could help you understand how to speak
properly around Wigan link

You will is you buy the K-5 + 18-135 - for £1100 or 1100 Guineas if you prefer the old fashioned way Ha! Ha!

Sounds alright to me Mike.... I've sent you a PM.

I wondered if the Tenpa 1.36x was any good and thought of getting
one, because I've lost TWO rubber eyecups off the KPS..... they unscrew
and fall off. Cutting out glare is really useful and it lets you frame
the shot better.

There is a replacement eyepiece for the KPS on ebay but it's
flat rubber not cupped.... not quite as good, but worth
getting if you lose the original link

There's also the excellent KPS 1.3x available on ebay.

I can't use a K-5 without a magnifier the image is too
small otherwise.

Pentax Magnifier FB is a specialist 2x maginfier which you
flip up and down. Quality isn't as good as the Pentax Refconverter.

I think I paid £900 for my excellent K-5 off you
I've rounded that up so I don't confuse myself

I've got a fake Casio

I thought someone high up in Japan said that all Limited
lenses were designed for full frame or was it *DA primes?