DannyC71 wrote in post #18705688
What I meant by "sort of" was that I could actually mount it with the lens zoomed out to 300, but it wouldn't auto focus, it tried, but wouldn't.
I have a 6D. In all honesty I'm not anything close to a pro and my gear is probably beyond my skills. I fell into the trap of having to have all the zoom ranges.
I've also noticed that everyone seems to be discussing 1.4x as opposed to 2x. Is that just a matter of personal preference or is there a more technical reason?
Do you want to AF, or manually focus? AF ability drops precipitously as you up the f-number of the optics. 1.4 can give good AF, and 2x can disable it completely, or make it hopeless.
Are you expecting sharp 100% views? The more you magnify your pixels, the more you lose that, not that there's anything wrong with that, per se, but it may not be what you want. Up to a certain point, TC magnification may get more quantity of somewhat-acute-looking details, but after a point, it gives better sampling of the lens with softer 100% pixel views.