Edited. I bought a Samyang 500mm Mirror lens off ebay so that i could try and expirement with tele photos before i decided to buy really expensive lenses..
I got the lens with a T2 Adapter (Olympus) Written on it [Edit-This ring is about 3mm to small for the Sony Alpha and the flanges are shorter- so it slips past the locking mechanism and 'gets stuck' in the void..]
which i screwed on to this side of the Lens [Edit- Cheaper than other.. but a bit of practice and get nice photos.. for the price ;) ]
[Edit - I was doomed from the start.. The auction is misleading in its words and meant you can buy an adapter but they make it sound as if one fits all- or the correct one is included- buts its not.fine print]
As usual I aligned the red dot the the Alphas red dot- put it in and screwed clockwise.. a bit unusual at first as it rotated about 1/4 around.. and my other lenses only twist and lock quickly..
I did not make anything off it and started experimenting and taking photos all looks OK.
Then when i try to unlock the lens anti-clock wise.. I realised there is play- that its not actually locked in properly... and there is about 1/2cm play either way on rotation and I cannot remove the adapter :( The actual lens screws of the apter ring but the ring stays in :( I press the release button and nothing- it wont turn any further.. I tried slight force and nothing. wiggling it up down-.. it stuck - but loose.
Can anybody advise how to remove the damn ring.. is there a a release inside the barrel somewhere? can i unscrew something to get to the mechanism.. I know the mirror need to be untouched and work in a dust free environment.
Surely i am not the only plonker that has done this.. I actually ordered the correct adpater now.. but the original sale description says this
-T2 adapter ( allowed you to used it on other brand camera) SAMYANG 500mm MC
f/8.0 Mirror Lens works with following cameras: - Canon EOS 5D, 50D, 40D, 30D, 20D, 10D, 450D, 400D, 350D, 300D, 1000D, 7D - Nikon D3X, D700, D300, D200, D100, D90, D80, D70, D70s, D60, D50, D40, D40X, D3000, D5000 - Sony Alpha A900 A850 A700 A550 A500 A380 A350 A300 A230 A230 A200 A100 - Olympus E-30, E-3, E-520, E-510, E-500, E-420, E-410, E-400, E-330, E-300 - Pentax K20D, K10D, K200D, K110D, K100D, K100D Super, K-m AND MANY MORES
and even the guy selling it said it will fit straight in... I am so annoyed.. Please help