There's actually a lot of them...
First I wanted the
15mm LTD, but in the end I bought the Sigma 10-20/3.5... still kinda want it (but not as strongly... I think mind control is weak because of the tin-foil hat
), but now I'd rather pick a 8-16 in place of the 10-20 :-/
One lens I've always wanted was
a 70-200/2.8 (brand not relevant), but since I don't have FF, it would be a waste... crop "equivalent" would be the 50-135, but I'd like the FF one even on crop because I like the FoV range better. Now I have a DA-L 55-300 and the M 80-200/4.5 so it's not a "necessity" anymore.
Then there's the
fisheye... I'd have liked to pick up the 10-17mm, but never got around to it.