The questions about the TC-14E III has me scratching my head so I went to the web to see what’s out there. I was disappointed to see how much misinformation there is. For example, test shots taken where there is visible and obvious heat shimmer degrading image quality which is labeled as a bad teleconverter. It’s very easy to see how folks can be confused, hell, some of what I read confused the crap out of me! My preliminary shooting with the TC-14E III is impressing me but I’ve just begun. Until I’m done, I wanted to repost this five year old video which might help some.