This lens is the one to pull out when things are slow and wouldn't normally attract interest. With this lens, almost every photo taken is in a perspective never seen by anybody, and thus looks very unique.
Sharp all around! It is crisp and very sharp up until its far far edges; F/5.6 and higher get you sharper shots up until F/16; After F/16, you're just compensating for an intense light source, Versatility: The many uses it has can seem almost endless.
Sharpness below F/5.6: Tends to be a bit soft on distant objects, but thats not what the lens is for; The F/3.5 aperture is perfect for objects with no depth, such as astro-photography, but thats not a common photo; Eyes tend to not focus too well at F/3.5, Exposed lens: The lens is quite out there.