On a full-frame camera that goal is a perfect companion. It covers from wide angle to tele medium, and therefore hardly leave my camera. Ideal for landscape and portrait. A 24mm is minimal distortion in the corners. The rendering of colors and contrasts is perfect at all focal lengths. Its opening 2.8 also allows use indoors or in low light conditions. The focus is quick and quiet, and can be corrected manually at any time. Used to 70mm, this lens is also very convenient for portrait, thanks to the large opening, the subjects are very well developed.
Benefits from: - Opening constant 2.8 - Blocking 24mm to prevent it lengthens during transport
His least: - Filter diameter: 82mm
Finally, a goal that I recommend for people who like to vary their photos, and move from landscape to portrait.
