Thanks John. I suppose that the worst that could happen initially is that Photobox (or similar) might refuse to print it.

. . . I think I know the answer but would welcome input from more informed members.

My wife has a litho print of a painting by Gloria Eriksen. The print was produced by Bernard Picture Company in 1982 and has a very small copyright symbol (circled C) followed by BP Co. in the bottom left corner.

The print is very badly faded so I've re-photographed it and worked on the colours to produce a reasonable result that I think would print well on Canvas.

I've spent a long time trawling 't internet and have not been able to find any web sites for the printing company, neither have I found the print available to purchase from any of the poster galleries.

Now to my question. Can I rightfully send my image of this print to somebody like Photobox and have it printed without any possible repercussions as it seems that the apparent copyright owner, Bernard Printing Company, no longer exists?

The print itself has little value and was probably bought from M&S, it just happens to be one of my wife's favourite prints and I'd like it reproduced.

The thread size is M3 but please remove the batteries from your K10D before drilling through the shutter button.

Why is it, when somebody tells you there are a billion stars in the sky, you are likely to believe them, but if somebody tells you 'that paint is wet' you have to touch it to check?

If you have an A series lens or earlier, set the 'Allow use of aperture ring' option to allow, set the lens aperture manually (not to the A setting) and try your setup again. I think in this situation the pre-flash will not occur, but the popup flash will fully discharge and will therefore contribute light to your scene.

The SMC Pentax Bellows 1.4 100mm lens can only be used with a bellows unit which is required for focussing. The lens has no focus mechanism of its own.

The pop-up flash will probably fire your slaves too soon. If you have an old flashgun that has a tilt head, put that on the camera and tilt the head towards the ceiling.

Your $45 would have been better used to buy a radio TX/RX triggering system.

Nice shot Jack, but it's still a FIAT (sheep in wolf's clothing) , and not an F1 sheep at that.

A small but significant point about using macro lenses rather than tubes that hasn't been mentioned so far is that you will retain focus to infinity. Using tubes, you'll lose it, therefore a macro lens is much more versatile, but more expensive.

Macro focussing rails seem to be very rare nowadays. Novoflex is a good one, as is Pentax.

Have you considered using a bellows unit which incorporates a macro focussing rail? They are readily available from auction sites in either M42 or PK mount usually very cheaply.