I have used a Jobi 'across the body' strap for years (and recently bought another when it appeared on Ebay). Being screwed tightly into the tripod mount, the obvious way to pick up the camera is to grip the entire strap just at the mounting point. It can't swing and even if the rest of it snags, you can't drop it. It's comfortable to wear and across-body doesn't get in the way at all - and I have lots of body for it to go round!

A company in Folkestone UK will probably assist with 110 film. There isn't much they don't do film-wise link
Welcome to PentaxUser and please post your pictures!

Slide copying with the BPM set involves mounting the slide on a platform at one end of the bellows slider, in the open with light hitting it from every angle. I presume the idea is to arrange for deliberate backlight. The Pentax version involves a separate bellows arrangement between the end of the bellows proper and the slide mount so the only light that can reach the lens is that coming through the slide.
That said, a lot of people are put off the BPM product because it looks flimsy in photographs. I can assure you that it is anything but flimsy! It is a superbly engineered system that will take whatever you'd care to throw at it, plus there are extra mounts for nearly every camera under the sun!

On some of mine, the hairs turn into little spiky hook like things, others just disappear. We'll have to wait and see with these. That's a good focus stack.

The composition is excellent and the overall colour theme gives a wonderful warm, peaceful post-harvest feel to it.
"Head high" barley suggests it was 5 feet tall? Eh?

Shucks !

Lots of beautiful misty texture in here. and "non classic composition" works very well.

The lens is only half the equation. The fellow holding it is the other half - and these are not the easiest of subjects. Well done Mike.

The red and white tape thrashing around makes such a contrast with the sterility and lack of motion elsewhere. You caught the mood perfectly.

How many of you are using series A lenses? This was made for them and it is a seriously good converter! Put a K to M42 adapter in it and you get the same quality result with Takumars et. al. (I will be claiming commission when he sells this!)