Info: Canon EF 24-105mm f/4 L IS review

Luminous Landscape has a wonderful review of the new Canon EF 24-105mm f/4 L IS lens. It sounds like a winner, except for the slightly increased barrel distortion. Contrast and resolution apparently is higher. The new lens was released this October and has the new 3-stop IS; increased weatherproofing; increased contrast/stray-light control; and features 18 optical elements (3 aspherical) in 13 groups.

I have the old EF 28-70mm f/2.8 L lens and while I'm generally happy with it, it does suffer slightly wide open at wide angles in the corners. I was thinking of replacing it with the new 24-70mm L lens, but for fieldwork, it looks like the 24-105mm f/4 L IS is a better choice since it is smaller (83.5mm Dx 107mm L), lighter (670g), and has longer range. The MSRP is ¥145,000, B&H has it for $1249.