While I primarily shoot landscapes, I'm planning on starting to shoot some architecture, and I'm wondering about what my limitations are with this lens and light fall-off. I shoot transparency film (Provia 100F and Velvia 100).

B&H has the center filter for this lens listed at $576 - kind of a ridiculous price for a piece of glass. I'm just wondering what the experiences of others have been that have used this lens for these types of applications.

Thanks,

Ben C