2.0x converter - are they all the same???

[SR071]

Are these teleconverters all made equal (the canon ones I mean)?

If I get one that's 5 years old, will it be the same as a new one?

If there were any changes over the years, what are they, and is there any real impact on image quality?

Thanks,

[ddelallata]

There are two versions...the Mark II and the original. The Mark II (newer) has weather seals and an anti-reflective surface on the inside of the barrel. The optics are the same on both versions.

[Hellashot]

Keep in mind that very few lenses will work with Canon's teleconverters. I believe other teleconverter manufacturers (Sigma, Tamron) make them to work with a broader range of lenses - not just expensive F2.8 or wider lenses.

[SR071]

Thanks for the feedback.

I'm aware they don't work with everything, I have a 70-200 2.8 - it's for this lens only, just really for some stupid experiments I'd like to do, you know, photograph New Zealand......from Australia.