There are a few things to ask about the Ricoh lens, so posting a picture of it showing the aperture ring and the mount would be very helpful.

The questions are: Is there the Ricoh pin on the mount, is there an A on the aperture ring, are there electronic contacts on the mount.

The Ricoh pin can jam on Pentax mounts, so caution is needed there. The rest of course you can try and see what works or not. Is exposure all over the place?

I'm getting notifications OK here.

There's a new quick look at the Flu Card on YouTube:

https://www.youtube.com/watch?v=wncckHQLHc8&feature=youtu.be

The best thing to do is check out any recent eBay sales. The Auto 110 has passed its peak of interest now, the last one I sold was very slow to sell and didn't reach much of a price.

That could change though.

£19.59 from the link at Amazon.

They seem very affordable, so maybe no need to look further than SRS?

Do we expect it to do that though Stan? I'm not so sure that we do. There are different compelling reasons to desire a 645D or 645Z.

Unfortunately, as I expect most purchasers will be expecting their 645D cameras to earn money for them, they are more likely perhaps to add a 645Z than rush to trade in. An expanding studio might just buy some extra camera bodies, for example.

Well I just looked at the photos, and it's an interesting selection that can be enjoyed without having to leave detailed comments.

Maybe a good compromise would be to post a couple in the forum and then provide the link for those who wanted to see more of the style of image? It shouldn't be necessary to post them all here and there's nothing lazy about Dan's photography so far as I can see.

In fact, you seem pretty busy Dan.

Pentax Digital Camera Utility?

Looks very interesting and, as you say, shows remarkable commitment. I would much rather have a 645 that a full frame DSLR.

Sadly one small detail prevents it, the cash.

It's actually Sigma's fault and applies to all marques. They don't , as I understand it, pay the licence fee so they have to "reverse-engineer" their lenses. This means they end up paying money if they run foul of patent law, as in the case with Nikon recently. It also means that their lenses will not necessarily work fully with new camera bodies. Sometimes they have to re-chipped by Sigma, sometimes they can't be upgraded at all.

Neither Pentax nor any other manufacturer will keep track of Sigma's problems, they have enough of their own. Pentax lenses will report properly to Pentax bodies and they make no claims about lenses from other manufacturers that may or may not do so.