I haven't used this much to speak of, but after seeing this review, I thought I would give it another try. The examples are close with the Extender. I like it and definitely need to use it more to see if I can use better settings. Also I use it on my 80D camera.

ok I've given this a few tries now. I know that you can't use this extender with the aperture wide open. Despite trying various settings I've found getting a clear image from it very difficult, you need to up the aperture to have half a chance, which results in having to up the iso even on the...

I bought the 2.0 Version III extender to add utility to my 500mm f/4 L. I wasnt interested in doubling my 70-200mm as I already have a 100-400mm. My interests were: doubling the focal length of the 500mm f/4 for use on a 7D Mark 2 body to get maximum reach for long range shots, and on a 5D Mark 3...

As expected

I have a hard time getting good shots when mounted to my canon 70-200 f2.8 mkII. Was hoping for more.

Only just arrived and am exceptionally happy with the clarity & extra distance I get from using this. So looking forward to heading into the Bush to capture wild life.

Not much really

A bit of a nuisance to keep putting in on - and then you have to focus manually; which resulted quite often in poor quality photos

This is a superb extender which works flawlessly with the Canon prime telephoto and super telephoto lenses. I bought it to supplement my Canon 300 mm f/2.8 IS II lens to give me an effective 600 mm f/5.6.

Very cost effective way of increasing your telephoto reach; It's very light and compact

Loss of two stops of light compared with the mated lens

Outstanding images with this in conjunction with my 300mmF2.8L. Frustrating that it does not work with the 100-400 F4.5L ll USM, while it did work with the original version of this lens, (although this was not consistent). I also own the 1.4x extender.

Very.co.uk said delivery would be about 6 weeks, but this arrived within a week, so very impressed by this. I attach this to my 70-200mm f2.8 is 2 lens to get 400mm and the quality surpasses expectations, considering I would have to pay two grand for a 400mm lens outright.