Key Features
- EF Mount Teleconverter
- 1.4x Magnification Factor
- Microcomputer Controlled
- Communication Between Lens & Camera
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Top customer reviews
- For that extra reach!While there's much flack about the sharpness of extenders, even the EF 1.4x III, I'd say they were right. But wait!! I saw the same issue when attaching this extender to my 70-200 2.8 L II—slightly back focused on my 1DX2. The fix is to make AF microadjustments on the camera body to calibrate for AF focus. After fine tuning the adjustments, now razor sharp on both W-T and the AF servo focus is fast. Totally surprised how many photographers are unaware of this critical and necessary AF microadjustment. However, be forewarned, camera menu AF microadjustments are typically not available on Canon consumer type DSLRs. The weather sealing is great, and guess what? This teleconverter also works on my 120-300mm 2.8 zoom too.
- Extender EF 1.4x III limits my options.When used with the EOS Rebel T2i body, the autofocus won't function. Your only choice is manual focus. It also will not fit onto Zoom Lens EF 75-300mm 1:4-5.6 III. But it works wonderfully with Zoom Lens EF 100-400mm 1:4.5-5.6 L IS II USM.
- Love the extra reachLove it. It has greatly enhanced my wildlife photography
- not for a t6ithis extender did not work with my rebel t6i, my disappointed
- Does not live up to expectationsI do not recommend this extender as it impacts sharpness. In numerous tests, this extender reduced the sharpness of my EF 70-200mm f/2.8L IS II USM from what I would describe as tack-sharp to "soft". There is no sense in having a 1.4 boost in focal length if the picture is not sharp.
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