Good tips.....kinda why I am asking if the older 100-400 is rated as "Good" glass. I have no clue what I am doing. But I take a LOT of pictures. Always have either a phone or camera with me. And I work out in BFE and see lots of cool [bleep] every day. So it's kinda an Injustice not to have something better than an iPhone 6 or the Canon S30X
