Canon EF Extender compatibility

[rpurdum]

I've inherited a wonderful Canon EF 70-200 2.8 L lens. It is a Type I, I believe. I'd like to purchase a Canon EF Extender and was wondering if the Type II or Type III extenders would be compatible. I understand the mount will fit but I'm concerned about quality. I had read once that the extenders have to match the lens type. Thanks for any help you can provide.

[jrhoffman75 · Accepted solution]

Either version will work with your lens. The III has better image quality due to less distortion. The III has better AF performance with newer lenses; not the early 70-200.