LensRentals looks into the Canon EF 16-35 f/4 IS

that’s why i love old mf lenses – metal lens barrel, and no build-in af motor, ultrasonic or whatever, nothing really that could get broken within decades, if you handle your lenses carefully, they’d last a lifetime…and perhaps your grandchildren would love to use them. 🙂

besides that, i’ve read some time ago, the zoom lens class 70-200mm is the one which get broken seriously too often within a couple years, i can’t verify this, because i don’t own a zoom lens of that range and/or type.

Source Article from http://www.dpreview.com/articles/6798891894/lensrentals-looks-inside-the-canon-16-35-f-4-is