No, you misunderstood - you don't pay to get nominated. You pay to enter, and the top 5 when judged by the judges become 'nominees'.

Also wanted to chime in with thanks to everyone. Very much appreciate the thumbs up.

Thanks guys, really appreciate it. I really hate asking like this, seems so sordid. But thank you again!!

Thank you sir!

Hm, not directly DIN K mount, sorry! Pentax once made one many years ago I think, but nowadays you're looking at 3rd party ones like Jinfinance which have a M42 end, and then a M42 to K after that. Go for the flat one not the cone one, otherwise you'll have too much length (from personal experience).

Thanks re site!

Something slightly unusual that doesn't happen every day, but my extreme macro site has made nominee for a Webby! You may or may not have heard of webbys but they're quite a big deal in the website world. Sites like BBC, Flickr, Google compete for these, it's a big boy prize. My site is non-commercial, no ads, no affiliate stuff - just a site teaching people about extreme macro, lenses, light, software etc mainly based on questions I've had over at Flickr.

Anyhow, do feel free to throw me a vote on the 'people's vote' if you feel it's worth it, it would be very much appreciated!

site: http://extreme-macro.co.uk/
vote: http://pv.webbyawards.com/2014/web/general-website/weird

I put it in the weird category cause it was cheaper than the £250 for the others. I prefer to think 'niche'

Thank you!

Thanks Gwing! Not quite what I'm looking for because it's 395nm-400nm which is not quite low enough and a lot of blue, but great to know about!

Nah, was just musing. Too busy playing with UV fluorescence at the moment.

Thank you Darkmunk!

Ahhhhh, yes, that explains it, thx for the info. I've actually come up against this quite a lot. I'm quite happy to pay to have a MPE65 converted to Pentax mount (yes I get the registration distance issue) but the problem is that lens has a motor inside it that drives aperture, and Pentax can't talk to that. Bit of a bummer.

hmmm. I've been looking for an excuse to try out axial lighting...

Bought myself a lovely wooden STABIL macro tripod for Christmas, with a RSS ballhead on top. Lovely combo