The place for comment on images is Your Photos or the Gallery and I don't understand how Stefan can be unable to comment on any of the images there.

It could have been an M42 screw thread lens, for which mount adapters can be found to use them on quite a wide variety of cameras. In any event, it's usually worth a chance if the price is low enough.

VAT. Import Duty. These things add significantly to the imported price. You've also not factored in your other expenses - travel to and from airports, car parking costs in the UK, possibly hotel in the USA, definitely meals....it's not so clear cut and definitely harder work.

Lenses prior to the WR ones are definitely not waterproof and need protecting aginst the elements.

The WR ones seem to be protected. Yes, if rain gets on the front element it will need removing. The trick is keeping the lens pointed downwards as much as possible and using a good lens hood.

Likewise, cameras have not been waterproof and there have been many points where water can get in. The weatherproof natiure of the K10D and beyond is very real and for the first time we can be rather more adventurous taking electronic cameras out into the rain.

Fair enough Steve.

The Fuji DSLRs were highly regarded by portrait photographers, but when shooting side by side I have to say the Pentax pictures looked better. Warmer, and better, IMHO at least. Fuji have it seems withdrawn from the DSLR market.

The Sigma SLRs do indeed have the Sigma range, but I'll bet in years to come we will find that Sigma fit Sigma lenses are few and far between on the second hand market.

In the future, who knows where sensors will go, but the Fuji ones may well be in bridge cameras or mirrorless cameras. The Fovean? We shall see with that one, but my own feeling is that it will find it very hard to survive against the mass of the "opposition" - if I'm right, that could well be a shame.

You need to find out if this is the Takumar 83mm f1.9 with 42mm screw thread, which exists only in miniscule numbers and may never have entered production, or Takumar 83mm f1.9 for Asahiflex, which was in production from 1953-1957.

Of course, it could be a misprint and be a Takumar 85mm f1.9, manufactured from 1964 to 1971.

McKeowan's doesn't list the two rare lenses, so no sales data it seems. It's worth what the buyer will pay.

It is a good lens, although I wouldn't rate it as highly as the zooms of today or the primes from its own era.

Stopped down, it can produce very nice, crisp shots.

AS with all telephoto lenses, the biggest enemy to sharpness is camera movement, followed by aerial haze. The former is less of an issue these days, now we have SR.

I used to use a Kershaw Penguin, when I was but a lad, and it saw me shoot my roll of film every year from ages 8 to 11 I guess.

Quality was dreadful, the lens wasn't parallel to the film plane and the film drifted in storage so frames overlapped.

Apart from that, a fine bit of British camera design!

There is a method of refusing a bid, although it's not something that I usually do so I can't tell you what the process actually is.

The K20D and later actually lock the sensor in position if SR is switched off. The K10D held it still floating.