The Refresh line up is as follows:

The EF 1.4X Extender and the EF 2x Extender which are supposed to offer faster autofocus and  improved autofocus precision. There’s also talk of “an anomalous dispersion lens element for reduced chromatic aberration” -whether this is new from the Series II teleconverters, I’m not certain. They’ve also got this high-falutin new flourine anti-smear coating -somehow repelling both oil and water for cleaning with a dry cloth -and this coating is applied to all six new lenses. They also kept the weather sealing.

The refreshed EF 300 2.8 IS II USM has been beaten and starved to 82.9 ounces for decreased reliance on mono and tripods. It’s also been given adamantium bones…by that I mean more magnesium alloy and titanium have been used in its construction. Weather sealed exterior joints and switches and the new flourine coating make the cherry compote on top.

The big boy, EF 400 2.8 IS II USM, is the 5th generation of the 400 2.8 line, and the first refresh since 1999. The 28% weight reduction of the 400 2.8 is no joke. Formerly 189.4 ounces the new lens is 135.8 ounces -that’s 3.35 pounds reduced. I assume this is in part because it got the same magnesium alloy and titanium upgrades as the 300 2.8 IS II USM. Like the above, we’ve got weather sealing at joints and switches.

Next post we’ll talk about two all new lenses.