Originally posted by 1marek The f/1,4 and the things you can do with it are just amazing and i'd really like to have a lens like that but i'm wondering where's the lens's sweet spot and how it performs on landscapes, so any thoughts?
The lens's sweet spot is f/1.4, stopping down only really improves depth of field. Also, the overall rendering seems to change (for the worse) when you stop down. My 16-45 is plenty sharp from f/4 on and is relatively compact, so I only need the primes for wide aperture.
Sigma 30mm @ f/1.4
Sigma 30mm @ f/8
If you need an all-purpose walk-around lens, then the 35LTD is a pretty tough package to beat.