Face in the Crowd

I am at the photography exhibition at the NEC.
I feel like a fish in a bicycle shop.
I'm not at all sure what I'm doing here. I asked what I thought was one intelligent question on a stand with photographically printed mugs etc. they looked down their collective nose and said they were here to sell the equipment to actually do the printing. Not the mugs! I slunk away with tail between legs and haven't asked any more questions.
Nice to meet some other Blippers. Some of them are in this photo. It's like playing Where's Wally.
How many can you spot?