Blurryeyed wrote:
It replaces the rear retainer ring on the lens, all manufacturers lenses are different. I suspect that most of the retainer rings among a particular manufacturer are the same however a Canon retainer ring is going to be different from a Sony, Sigma, or Tamron. I have only seen this item advertised for the Canon 11-16, no other Canon so I don't know if that lens is different from all the other Canons.
I am a Sony full frame user. I don't have either of the lenses that this is supposed to be used on but I would love to find out why this system cannot be used on any FE Sony lens???