It's understood that Sigma don't pay licence fees to the manufacturers, hence although their lenses work on existing bodies, by reverse engineering, when new ones come out they may well not do.

My conclusion is buy Pentax lenses for Pentax bodies, wherever possible.

However, the loss of one focusing method may not be too serious as most of us use centre spot focusing anyway.

Welcome aboard!

Best version for me, keep up the good work!

So it was, I'd forgotten that these are supposed to be shot within the competition fortnight. Very difficult to do that it must be said.

Aiki will ignore the entry I'm sure!

Personally I prefer the clean clear look of Version 2.

Don't worry, I have broad shoulders!

Getting better, but now losing detail in the stonework. It's been an interesting progression, but none of the other very fine shots needed this.

Interesting idea, and it has been tried by retailers such as Jessops.

I wonder what they did with all the old cameras and lenses though - if they just destroyed them to remove their impact from the market, that would not be good.

Yes, it's better...how about putting some sky in as well?

Excellent apart from No 3, where the blown out sky spoils the shot for me. Maybe a case for HDR there?

Otherwise, splendid location that you've made very good use of.

Can't say I'm happy about the thought of killing anything for the purpose of photographing it, be it a mouse or anything else.

So not for me I'm afraid.

Ot could, but I doubt that it has any effect on the bulk of buyers, who probably have no allegiance.

Targeting those moving up from compact and bridge cameras will bring in new photographers who have little knowledge of Pentax lenses, probably. This is potentially the expanding part of the market - established photographers don't change marque very much. I know it sometimes seems here as though they do, but we are not a representative sample.

I know quite a few K100 users who have no thought in their minds about upgrading. They've entered the DSLR world at a fixed point and that's where they expect to stay. So you get them at that point, or someone else does.