LensRentals looks inside the Canon 16-35 f/4 IS
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LensRentals looks inside the Canon 16-35 f/4 IS

There's more good news when it comes to the assembly of the lens bezel that holds the front element in place. Unlike previous models, which are held on by easily broken plastic clips, the ring which sits in front of the front element 'has a full bayonet-like mount, which holds it very snugly around the front element. It also has a thick rubber foam gasket.'