Reviews and Problems with Canon Extender EF 1.4x III
Showing 1-3 of 3
Not happy with mine at all
S. Floyd "molliefestus", Amazon
31 August 2014
Summary: I am so very disappointed in this product, I am sending it back. I've used it for less than a week, am a professional photographer, and have used this in a) good outdoor natural light b) with a weighted tripod and c) with a still subject and every single image is soft. Sharpness is gone. My lens that I attached this to is the Canon 300mm f/4L IS and I have the Canon 5d Mark II camera. I have used this with ISO 50 with f/stops of 5.6, 8, 11, 16 and 22.
Excerpt: I have now tried two of these Teleconverters with the same results. They both caused softening of the image or reduced quality. I bought my 500MM II with hopes of being able to use this product but sadly disappointed. I tested both under many controlled tests and all results were the same.