[Guest]

Well that's a tough one - this lens is better than most 85f1.8 (I presume you are talking about nikon or canon); but it is also a 150mm lens with regards to shooting distance so it is a bit difficult to compare. Having look at a lot of images on the web (not the best source for comment) this lens is incredibly good with regards to image quality but it also has a perspective that I find in many cases a bit annoying for 'street' stuff - so if your happy with a 70-200f4 lens (with most of your pictures closer to 200) then this is the lens to love; but if you really want to shoot with an 85f1.8 (on a ff camera) then there will definitely be an adjustment.

 

(I'm making an assumption that you are talking about an 85f1.8 on a FF and not aps-c).