Required factory focus recalibration. Still slightly front focusing, most noticeable wide open when there's little DOF. Re calibration process was painless. I paid to ship lens and camera body to sigma in Long Island NY, and they took it from there. Got it back in a few working days.

Image Quality Bokeh Fast; Nice Bokeh; Strong Construction

Blurry Focus

Great lens! I don't know how else to describe this lens in 50 characters

While it's not cheap, the Sigma 50mm f1.4 lens provides great value for the money.

It would be nice if it had image stabilization

Purchase use.Very good from F/2.2. Front focus 1.4-2.0. After 2.2 have litle back focus. From f4 focus is perfect. Work very well in life view with Canon 60D. Mutch better than Canon 50/1.8.Very happy.

Consistent Output; Durable

My reaction to every fast lens Sigma release seems to be "I can't believe something this good costs less than $1,000." A new favorite -- the 50mm f1.4 DG HSM -- joins Sigma's Art series of lenses, which already includes two of my all-time sub-$1K favorites, the 35mm f1.4 and 18-35mm f1.8 .

The Sigma 50mm f1.4 lens is a well-designed lens that performs very well for its price

It would be nice if it had image stabilization

Very good

What a whopper! Sigma's 50mm f/1.4 is twice the size and weight of other similar lenses and has a colossal front element promising superior peripheral brightness (reduced corner shading) and improved contrast at wider lens apertures. The finish and the controls are rock-solid.

This is an in-depth review of the Sigma 50mm f/1.4 EX DG HSM prime lens that was announced on March 18, 2008 for Sigma, Canon, Nikon, Pentax and Sony mounts. The Sigma 50mm f/1.4 EX DG HSM is a professional-grade lens for enthusiasts and pros that need a high quality lens for portraiture and...

I also have the 30mm 1.4 Sigma and I just love these 2 lenses they behave similarly but the 50mm Is probably sharper. Obviously I use the 50 as an 80mm small tele on DX format Nikons. I am a regular newegg customer but I did not buy this lens from newegg, I should have...

Very well built, SUPER SHARP, fast AF (HSM), perfectly balanced on D300; It is soo much better than the Nikkor 50mm 1.4 that I traded the Nikkor away; The Bokeh` is (to me) Gorgeous, so just run and get this gem!!

NONE; well OK perhaps didn't need to be a 77mm filter tread..

One word for the product: AWESOME Let me list out the pros and cons below for better readability. I am so excited about this product that my words will just mix-up. PROS: 1. SUUUUUPERIOR quality images. DAYUMMMN sharp.