1W isn't enough. When I was looking into getting on of these guys myself I read an article saying that the highish power UV lights work great. You'll have to put it in a box and let it run for a long while. Also make sure it's not one of those bulbs which are painted purple like: http://www.amazon.co.uk/Light-Blacklight-ultra-violet-160-011/dp/B000L9CS32/ref=sr_1_10?ie=UTF8&s=kitchen&qid=1268657282&sr=8-10

As far as I remember, something like this:
http://www.amazon.co.uk/Black-lightbulb-violet-energy-Bayonet/dp/B000L97W74/ref=sr_1_5?ie=UTF8&s=lighting&qid=1268657282&sr=8-5
will work - but I'm not entirely sure if this is a true UV light.

So http://www.srsmicrosystems.co.uk/3557/Used-Samsung-12-24mm-F4-D-Xenon-Lens.html?... would work on a Pentax?

If you don't mind me asking, what's your reserve at?

Wait ... I thought the Samsung lenses didn't work on the KA mount - are they easily adaptable?

FYI - I sent Irishphotographer an email to come check back in. I'm just not comfortable posting their email in a public space, but I'm sure you'll hear back soon.

A match made in heaven Hopefully you'll stick around Danzaman - while I've not been here long I've found it to be a great forum.

The TC have the electric contacts on it and is it the 7 element or 4 element?

I'm still sub 30 days so I can't send PM's. I see you're in the same boat

It's a really nice lens, but I was looking for the APO only variants (which are normally 2-3x the cost). As far as I know it's still available as I was the last person in the queue.

My best guess would be if you've got an email address post it and Irish will get back to you via email.

Wouldn't a purpose built one for £10 be better? Apart from having multiple colour slides, there wouldn't be a texture on the fabric?

Will that be noticeable in a photoshoot, or is white just white?