MT Shooter wrote:
The Sigma converters match properly with the Sigma lenses. The 2X on the 150-500mm lens will meter but will NOT autofocus, it will make the lens manual focus only. He probably will not like the light loss nor image degradation experienced from using the TC on this lens. I have used both the 2X and 1.4X TC's on it and choose never to do so again, just not worth the trouble.
Thank you MT you make a good point. I appreciate your advise.