One will also hear that comment that stepping down one or two stops will help but this is something I was never able to manage. At best, I would be able to take 2-3 photos and then suddenly the "err99" message on the next attempt.
Thanks for your comments guys, before buying it I made sure that this lens was compatible, I also have heard of some very bad stories about coupling these lenses to a canon camera, but mine seems ok
I tested this lens out briefly tonight before the clouds quickly rolled in, I could stop the lens down one stop with no error message, but I'll have to wait for a better night to examine the picture quality :arrow:
  