Regretfully I'm selling this lens to raise funds. The lens is in excellent condition, clean optics, no marks to the barrel etc. Works perfectly. £400 delivered within UK.

I love that the full frame naysayers have been proved wrong. I remember hearing that full frame would be the death of Pentax.

//The K-1's performance speaks for itself, as does user demand for the camera. Since its launch until early June (when we published our review), the K-1 has been sold out worldwide. On our forum, users have posted almost as many photos from the K-1 after just a month as there are photos from the K-3 II, which has been out for over a year.//

I'm a landscape architect by the way! Barrie's advice tallies with the landscape institute guidance I've dug out so thanks again Barrie!

I'm not convinced that landscape and architectural practices do size their images in a representative way as a matter of routine, from what I see it's generally a case of making it fit in the page

It's just we have to get two panos to a page in Indesign, and as the panos were hand held there are bits at the top and bottom which need cropping anyway. But you're right, I can still use the long edge of a portrait format shot to do the same thing - thanks.

We're using panoramas as well - unfortunately they're shot in portrait format and will be cropped top and bottom but I guess as long as the red square (indicating a landscape format shot of the same focal length) is reproduced at 207.15mm wide, the rest of the image will also be correct.

Whew, thanks Barrie! Thanks for breaking the calculation down for me as well.

Hi all, I'm having a bit of a nightmare producing some images for a Landscape Visual Impact Assessment. I need to show images which accurately represent the impact of a development. The usual methodology is to use a 50mm lens (on my cropped sensor I am using a 35mm lens giving a 52mm equivalent - a 38.2 degree angle of view).

I guess the simple question to ask is, what size does the image need to be displayed on the page to represent the view faithfully - at a viewing distance of 300mm? To further clarify, imagine the image was being printed on transparent paper and you held it in front of your face at a distance of 300mm in the spot the picture was taken - the image and the view seen through the paper should match.

Is there any way of calculating this?

Hopefully so, and some converts from Canikon too perhaps. It's a gem of a camera.

I like Sony but Pentax have a much better user interface and I just intuitively prefer optical viewfinders

I just had a play with one. The first thing I did was put it into MF and try manual focus with a 77ltd wide open - viewfinder is much better for this, with more successful focussing, and more comfortable. Not anything like a classic film camera finder but definitely a step up. Seems a great camera all round.

That first shot with the causeway - lovely!