My opinion is that much of this is blown out of all proportion - in a normal world nobody would imagine that anything inappropriate would possibly happen to such images as you propose. In an abnormal world I would expect that still nothing would happen because those suspect parties will be up to much worse and won't be at all interested in what you are doing.

So it's matter of common sense. Get agreement from those concerned. Let them see all the images. Delete any they don't want circulated. Then just relax and do the job well.

That's what I'd do anyway, so I hope it helps!

I rest my case! If they won't lock in, they don't fit....

The Nikkor lens mount is smaller than the K mount, so there's no way they will fit directly.

The detailed feedback scores give a result out of five for various aspects of performance.

Such as accuracy of description, speed of despatch, communication, shipping costs.

Ah, thank you. That clears that up, but I think they should look very carefully at their detailed feedback...

I can't find any indication that this seller has anything to do with Pentax themselves.

It's now up and running.

Yes, there will be a time lag!

There has still been no response, so I have just asked davidtrout to start a new competition.

Should our second in line be missing as well, then I will start one later on!

Rectilinear is right. The pentax lens is much better in this respect than the Sigma, but then it is more expensive as well.