toyah wrote in post #4926443
I was told recently I couldn't use my 40D as the place only allowed 35mm cameras - and my lens quite clearly stated it was a 50mm lens. I obviously need to buy a 35mm lens, which would make my camera quite acceptable.
I don't even understand how that makes sense, whoever told you that clearly hadn't a clue what he or she was talking about. I'm sure you could've got your way in just by actually making sense. 
But in all seriousness, I know these people are trying to do their job, and while I can't expect "joe photographer" to know as much as we do about cameras, I do expect them to understand the rules they're trying to enforce.
For example, like I had said, when I was at Yankee Stadium, I brought a 70-200 on a crop camera and as I was leaving, the guy said that I wasn't allowed to have that kind of camera. Apparently it was "too professional". I don't even want to get into the argument about the qualification of "professional" equipment. However, before I went, I checked the website and they had clearly specified that you're not allowed to use a lens with a focal length greater than 200mm. I was well within the limit. I didn't expect the security guard to understand that the camera's crop factor was independent of the lens's physical focal length. As a part of security, I would expect him to actually understand what I could potentially be doing wrong instead of making up some loose bull**** about me carrying something that's "too professional". I don't even understand how that qualification can be made.
I can accept the lack of knowledge, but I can't accept the ignorance to that knowledge.