You'll get much better results working with the original files than we could here using the small jpegs.

One word of warning... tweaking in PP can get addictive....

K.

I am no optical expert but...

The "the f-number is the focal length divided by the 'effective' aperture diameter". This means that 135 / 58 = 2.32 therefore it can be 2.5.

K.

Cropped or FF?

Show off...

Even bigger show off!!

Malo, you have managed to keep more interest in the sky than I did! Anyone else want to have a go

Cheers, Kris.

Alan charged me 30 quid for a CLA, might be a little more with fungus. You might be better off storing the lens somewhere light and airy and letting some UV get to the fungus. Sealed in cases is not so good unless you are very fussy about changing the silica gel on a regular basis.

Best wishes, Kris.

Nice looking piece of glass, and out of my price range! 400/2.8 is pretty fast though and weighs a mere six kilos...

K.

Has anyone got the listing number for the 400mm A*, I cannot find it.

Thanks, Kris.

Sixty quid is about right for an A series 50mm at the moment. The faffing about necessary to use a K or M series lens means that they sell at a premium. You could try keeping an eye on cheap cameras like the ME Super as sometimes naive sellers will have something interesting attached to the front. Unfortunately, every man and his dog (or so it seems) is squinting at badly taken photos to check them out.

Karl... any Pentax K-mount lens will work fine. The original series ("K") and M series lenses require more fiddling, everything thereafter (A, F, FA, FA-J, DA etc) will be fine.

Best wishes, Kris.

I was thinking more of Dangermouse's A series 200mm which is probably worth a little more than that!

Lots of people do happily do this little job, it just isn't for me!

Best wishes, K.

The crop is great and the image has a misty, painterly look to it. I like it a great deal. K