What doesn't work Algi? Field curvature will only be a problem in the near field, or at wide apertures, so not really changing the usefullness of that red-coded f8 setting on the pentax manual focus WA lenses.

How would you respond if the seller put on a BIN item and in error put in £10 instead of £1000? Would you have some sympathy and let them off or would you expect the sale to proceed regardless? I'm assuming that you bought before the error was noticed and changed.

That's not really true because don't forget that depth of field tables were issued for 35mm format lenses, assuming a different circle of confusion than large format lenses. The circle of confusion is a different figure for every format, we don't rely on large format measurements in any way.

A useful trick is to set up hyperfocal distance (or any other DOF requirement) for an aperture, say f8, but actually use f11 instead. This results in a more conservative estimate of the DOF available and allows for better qquality enlargements.

I know what you're saying Bret, but I'm talking about the seller's willingness to sell, and I'm not so sure that is binding.

An example is say a camera in a shop window, priced at £20. We go in, say we wish to purchase, and that is an offer to buy. If the shop don't want to sell (maybe it should have been priced at £200) they don't have to.

BIN is legally binding on the buyer, who has agreed to purchase, but I'm less sure that the seller has to sell. If they are legally bound and they refuse, then we have to go to the law to enforce the sale. Is it worth it?

First priority may well be a 80-400mm zoom or similar, enough of us have been asking for that for a long time. It will be pricey if it arrives, over £1000 I would think, but there seems to be a market for it.

Debateable, as we get into the territory of a BIN payment being an offer to buy that can be turned down, like a wrongly priced item in a shop window. I don't know the answer to that one, but short of making a fuss and going through some laborious eBay or legal process, what's to be done?

True, but he can receive a PM and then he is able to reply to it.

PM can be received and replied to, safer than publishing e-mail address in forum.

e-mail address removed to protect against spambots etc.

You can receive a PM and then will be able to reply to it.

And you guys say others are pedantic...