After about 8 or 9mths of umming and ahhing I finally bit the bullet and ordered a Sigma 12-24mm. In the end I picked it over the other ultra-wide angle zoom lenses because it is designed for full frame cameras whereas all the other ultra-wides are designed for cropped sensor DSLRs. This means that the 12-24 also works on my film camera as well the three series of DSLRs that Canon has (1x, 1.3x, 1.6x).
After I had a little play with the lens on 350d, I put it on the Eos 300(the film SLR I inherited from Karl) oh my I loved it even more. It really makes me want a full frame DSLR, 12mm is pure ultra wide goodness! When I get the film developed I will have to scan them in as the perspective is insane!
Of course one of the best things about having an ultra-wide is it just “enhances” the funny faces that Pabbi makes even more 
Impressive photo of your room,
love Mum
Such great pictures, as always! You’re so talented!
wow, you really can get a lot in with a wide lens!