A very sharp lens

[CarbonR]

Indeed, this lens is well known for its sharpness...
Click here to see on Ebay

[kds315*]

I take that as a good joke as this lens is far from sharp. The one Pentax brought to the market later indeed is a much sharper fisheye. This one is a collectors piece as it is rather rare. Most of them have front lens separation, the one on auction also has that. (I have both these fisheyes)

[spleenone]

Saw some samples with this glass in past, possibly from you CarbonR and edges were dissapointing. If I remember right.

[CarbonR]

Possibly yes, because they are almost no pics with the 18/11 on the web apart from mine (even the pictures and infos of the lens are quite rare). I've put two pictures here but have more posted on the forums : http://kajiwara.weebly.com/takumar-1811.html

[spleenone]

Thanks for info. Well maintain distortion but those edges.