Reviews and Problems with Canon Extender EF 1.4x III
Showing 1-10 of 12
Investment in future
Mumtaz A. Shamsee "Tazer", Amazon
5 February 2014
Summary: Right now it causes me to lose autofocus and that is a no-no for wildlife photography. I got it for one rare day when I spot the Yeti far away and I don't have enough reach. Who would believe my Yeti photos if they were crop-zoomed and noisy? But sincerely this is a tool for rare occasion when your subject is stationary enough and gives you a chance to reach in your pocket and remove your lens and put the extender on and then put it back on tri-pod and then manually zoom...
Summary: On my first outing to try out the 2X III (on my 70-200 2.8 lens), it worked great when focusing on relatively still birds (flamingos) but not so great when trying to track flying birds. It was slow to focus in AL Servo mode and created softer images compared to the exact same type of shooting using the 1.4 extender. All my keeper shots of flying birds were with the 1.4, but many of my still shots from a distance were tack sharp.
Only M Focus with 1.4 Extender on Canon 6d/EF100-400 combo
14 November 2013
Summary: I purchased the Telephoto converter for my EF 100 - 400 zoom lens which I use on a Canon 6D. Turns out Autofocus does NOT work which makes the converter practically useless to me. Once I add the converter to camera, focus mode shifts to M Focus. Reviews I read did not suggest this to be an issue.
Excerpt: I bought the 1.4 Extender III because I was so impressed with the 2x Extender III's vast improvement over the 2x Extender II. But I found little if any difference between the 1.4s. I am using it with version II lenses and a 1DX, so it isn't a matter of features support. It works very well, just like my version II 1.4. The three star rating is based on value.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus
Excerpt: I have had this extender for about a month. As previously stated, autofocus DOES NOT work with this extender and Canon's EF 100-400L telephoto lens (I have a Canon 60D camera). I can only speculate that the design of the 100-400L is too old to have the autofocus be compatible with the new EF 1.4X III. Manual focus works fine.
Summary: This product performs exactly as advertised. I'm using with my 70-200 f/2.8 for wildlife and horse shots. Great in bright light, but as you might expect leaves a lot to be desired in moderate, low lighting situations. For the price, I'm happy with the purchase.
Excerpt: I wanted to extend the range of my Canon 100-400mm lens. The extender did that well. However, on this lens the extender disables the autofocus making it very difficult to focus on moving objects. Even when photographing still objects, it is difficult. In addition, the extender reduces the clarity of the photographs. I could get a few decent pictures, but tack sharp never happened.
Pros: Easily Interchangeable, Nice Bokeh, Strong Construction