Excerpt: Technically excellent, optically astounding and simply amazing. If you are an architectural photographer, you already know that you need this. If you are a landscape photographer and are tired of shooting towards the sky at a 45 degree angle and watching all the trees vertically converge towards the top center of the photograph, then you also need this.
Excerpt: I use the lens for architectural and landscape work. The build quality is very impressive but be careful when you receive the lens. It comes with a larger size knob for the shift mechanism and instructions to install it in lieu of the one provided. Don't do it! Either have B&H or Canon do it or Canon may invalidate your warranty for trying. It also requires a jeweler's phillips screwdriver.
Excerpt: I use this lens primarily for architecture photography and after renting it multiple times I decided it was time to have it in the camera bag all the time. The lens does distort a little but it is to be expected from a 17mm. Great to shoot in tight spaces.
Conclusion: I am a professional photographer in Seattle. I shoot interiors for both commercial and residential builders, architects, and interior designers. I also shoot many yacht interiors for builders, brokers, and dealers. I have had the 16-35 zoom… and it worked OK but you lose a lot of both quality and image when you straighten out the lines with software. So far the 17mm tilt shift along with the 24mm tilt shift and numerous other lenses I have are the way I shoot.
Summary: Lens is a lot of fun. Very sharp. Easy to use. I didn't read the manual. Don't forget your tripod. Manual focus. It's super expensive so you might want to rent it first. Perfect for architectural photography.
Excerpt: A unique lens, great for architecture shots, but also as a super wideangle (if not tilted or shifted). I use it both on a 5DMK3 and a Sony A7r with Metabones adapter IV and the results are definitely stunning. The front lens requires much care, don't forget it.
Excerpt: Before purchase - other reviews said the lens was soft on the edges. This lens is designed for professional photography - used on a tri-pod and stopped down to f16 the lens gives amazing results edge to edge. The lens is expensive - but gives great returns if used correctly.