Originally posted by Butch5 Thanks! I have searched the internet and not really found much. I did find the video mentioned here but he had the same issue I do, how to remove the from element. I thought about having it serviced, but by the time all is said and done it would probably be almost what I paid for it.
---------- Post added 02-15-2016 at 01:26 PM ----------
Thanks! I have tried to loosen the lens hood to no avail. I did watch this video and he has run into the same problem, how to get into the front.
Hi Butch
Pentax probably glued the retainer ring into place, as they've done with other lenses too. In the past I repaired several lenses, even complicated ones (like the 28mm shift) and had to heat the retainers to soften the glue. I wouldn't do it with the fish-eye, though. I would guess, you need to work your way from behind, removing the zoom and focus rings in order to get to the real lens barrel. From there you might be able to unscrew the whole front assembly, which should enable you, to unmount the front lens. I don't believe (but cannot prove it), that the front element cannot be loosened, by just removing the retainer ring. The only hints I have found so far is the schematics on BDimitrovs site. Though usually I won't hesitate to disassemble lenses, when necessary, I would not come near the front lens with a spanner tool. I would in all probability scratch the element, when the spanner slips, which ought to happen...
Ben