If you have any wildlife photos using the Canon 400mm f/2.8 L IS Version 1 can you comment them here. I'm considering this lens as my next upgrade to be used in conjuction with my Tamron 150-600mm G2, and I'd love to see what photos you've manage to get using this lens!
I considered it.
But too Expensive and too long for my bag travel. So for me .. not practical.
I went with 100 - 400 L Canon Refurb v1
Some are in the prime of life but I m in the zoom of live.
Sorry, I have used the 100-400 IS II. It is a beast of a lens but probably not what you are looking for if you already have a tele-zoom.