nonac, if you don't mind I'm most interested in a comparison of the 300 X2 full frame vs 7D2 300 X1.4, etc.
What's your take? I have the 300 and extenders and a 6D and may buy the 7D2 but I'm concerned about a decrease in IQ, especially since I clearly prefer to stay below ISO 1600 with the 6D.
Of course I wouldn't mind more reach but ......
Hi Jack. I've only had my 300 for about a week so I have'nt had a chance to shoot a whole bunch yet. I have yet to AFMA this lens to either of my bodies either. However, the thing I have noticed is the 7d image IQ at below than 1600 with plenty of light are really good, the Cardinal I posted be an example. The fill flash I used really helped. I've mainly been shooting birds with it since I got it. I plan to use it for sideline football next fall. I'll have a chances try it out on some tennis, sand volleyball, softball, basketball, and baseball in a few weeks as I'm attending one of Canons workshops at Arizona St. University. By then, I should no a lot more about this lens and both bodies.