Canon Extender EF 2x II Lens Converter

Pros: Doubles focal length, Weather-sealed

Cons: Requires realistic expectations, Protruding front-element limits lens options

The Bottom Line: If you can understand that any teleconverter will have faults, then you will appreciate the Canon Extender EF 2x II.

Review: The Canon Extender EF 2x II is one out of two teleconverters made by Canon for their lenses. Canon has both a 1.4x teleconverter, as well as this one. It works by doubling the effective focal length range of the lens. Since I do tend to shoot at ...

Pros: series II teleconverter allows you to stack converters for more focal length

Cons: none

The Bottom Line: Yes you can stack converters and get great tack sharp photos.

Review: The origianl series 1.4x and 2x teleconverters couldnt be stacked unless you used a spacer but now with the new series II you can stack them no problem.
I routinely use the 1.4x and 2x stacked and still get tack sharp pictures this is something you...