There is also the possibility of finding a SIG (similar interest group) during the con about photography. Although, I'm not sure there is one this year. If you'd like to hold a roundtable, basically an open-forum discussion about everything in photography, try contacting Riffuchs (events@eurofurence.org) as see about setting one up. If would be a good chance to meet both amateur and professional photographer.
It might be too late for that, but it's at least worth a shot as I know there quite a few photographers in the fandom. And, as Nightfox said, there will be a message board in the lobby that is open for anyone to post public meeting places.