Excerpt: I'm pretty shocked on how good this lens is. I decided on this lens as my first Prime over either of the Canon 50mm's based on the focal length with my crop sensor body. This lens is pretty fast, and very very sharp. I have been very pleased with it and works well in lower light situations. I don't think you can go wrong with this lens.
Pros: Consistent Output, Fast / accurate auto-focus, Lightweight, Nice Bokeh, Sharp, Strong Construction
Excerpt: This little darling has made my SLR suddenly quite portable. It doesn't zoom but my computer does that quite well. I like the photos I've taken so far, but have yet to see a major difference between it and my old kit lens. I gave it one less star because of this, but that may not be fair because I haven't sufficiently tested it yet.
Pros: Consistent Output, Easily Interchangeable, Fast / accurate auto-focus, Lightweight
Excerpt: The 40mm had become my walk around lens. It stays on my camera. Going to a single mm lens takes me back to the old film days. I have to frame my subject by moving around for the best shot. The lens moves smoothly as well in video mode. It is quiet and smooth. I love it.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight
Excerpt: This lens just arrived yesterday and I think it will be just perfect for my purposes. I wanted a small lens to put on my 60D that had a large aperture ,a close focusing distance and did a decent job of rendering backgrounds out of focus. It allows me to fit my camera in my small purse/camera bag with room for the other essential I need. I great lens for everyday use and traveling light.
Pros: Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Nice Bokeh
Excerpt: I bought this lens to downgrade from my FF Pro DSLR and have something not as heavy to carry around with me. Paired with my new (B&H used) Canon 100D, it's my favorite lightweight setup to date, and I use it everyday. The depth of field is great, it's inconspicuous, and it's fast. Wonderful lens!
Pros: Consistent Output, Fast / accurate auto-focus, Lightweight, Nice Bokeh