Why on earth would we, but apparently plenty of people do. :

I presume you mean Nikon K10D. The mount has remained the same, it is true, but it doers suffer technically from being slightly smaller than the K mount. There is also not backwards compatibility to quite the universal degree as the K mount. And there are not as many lenses about to buy.

I think Pentax are right to point out their excellent heritage and compatibility. The K mount was a superb technical design right from the start and has adapted well to the electronic age.

The Full Frame reply simply means "we aren't saying we will or we won't" but they will I'm sure be doing the numbers very carefully. Will the cameras mentioned fly off the shelf? We'll find out soon enough.

No threads have been cleansed in any way that I'm aware of.

Hardly a Lead to a Deal, so I'll relocate this.

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Pentax serial numbers follow little logical progression, probably intentionally to disguise production numbers from competitors.

Well, as a rule it is....

I would call a 3x converter hopeless, a 2x as good if designed well amd the 1.4x or 1.7x as the best bet.

So the 1.4x and 1.7x I would class as moderate. The 2x converters can be OK if the 7 elementy designs, but are probably expensive marque versions if really good.

Alan, that is indeed a slight difference!

According to the Pentax website, the Pentax adapter will allow you to input the focal length. I wonder if this has been made possible by the latest firmware upgrade. I did read that the firmware should be updated so that the adapter's features can be fully utilised.

Hopefully it will apply then to the cheap adapter as well.