Hello
I need your help
I have a 300 f.2,8 and I am thinking to buy also a 400 for have 100 mm more...
I like hand shoot and so 500 mm is too much eavy for me.
I have also 100/400 and I use both with Mark IV and 7D.
What you think about ?
I read different notice on the web about this lens.
Same people are ok and for other is ko!
It could be useful or it will be a duplicate of the other my lens ?
Thanks


