L glass no problem:)

[fotomumma09]

http://www.petapixel.com/2012/02/09/how-to-increase-the-performance-of-your-canon-kit-lens/

In totally doing this

 

[Derrel]

Let you in on a little secret???? CANON already does just THAT on several lenses! They paint a red ring around the barrel and jack the price $289...