Yeah , if you don ' t see yourself using the wider aperture a lot then it probably makes sense to save your money and go with the 1750 . And regarding your point about portraits at 35 mm , I used to shoot almost exclusively with the 35 1 . 8 and I agree that it does a fine job with portraits . <| sep |> You should read the DSM some time . It lays out the diagnostic criteria for what is a mental illness . Do you know what it says about pedophilia ? One of the acid tests is , if you have had sex with an adult partner , you found yourself spontaneously , unwillingly , thinking of a child at the moment of climax . You were completely unable to control this thought . Let that sink in for a second , imagine how you would feel , and then please reread your post .