Canon 24-105mm f/4.0
EF-Mount Lens/Full-Frame Format
Aperture Range: f/4 to f/22
One Super UD Element
Three Aspherical Elements
Optical Image Stabilization
Super Spectra Coating
Ring-Type Ultrasonic Motor AF System
Optical Image Stabilizer
Rounded 8-Blade Diaphragm
Review of the product:
Boasting the superb build, mechanical and optical quality found in the Canon L-Series Lenses and a widely used range of focal lengths, the Canon EF 24-105mm f/4L IS USM Lens is one of the best and most popular Canon general purpose lenses made. The 24-105 L Lens quickly became one of my favorite and most-used lenses. If I had only one lens, this would be the one.
One of the most important features in a lens is the focal length or focal length range - get it wrong and you might not be able to take the shots you want. And the use for a particular focal length or focal length range varies, of course, depending on the FOVCF of the body being used. That said, this lens gives us a very nice general purpose focal range to work with. On a full frame body, 24mm is very wide. On a 1.6x body, 24mm is only moderately wide (equivalent of 38.4mm). And the advantage or disadvantage - whichever it is for you personally - is the opposite on the other end as well.
Use the mouseover links under the above picture to compare the field of view at various focal lengths. The 24-105 L was used on a full frame body for these shots.
The Canon EF 24-105mm f/4L IS USM Lens is quite sharp wide open and shows only very slight improvement when stopped down. Corner sharpness is very good - Full frame DSLR users will see some softness in the far corners at the wider focal lengths until stopped down.