I came across this video on Youtube with a very interesting comparison between the Tamron 150-600 f/5-f/6.3 with other lenses such as Canon EF 100-400mm f/4.5-5.6 L & 400mm f/5.6 prime. I have both the Canon lenses but I find myself using the zoom lens a lot more since I need to go wide to locate the bird in the sky or a tree, then zoom in on him. The prime lens doesn’t allow for that. I really have to admire the physical strength of the photographer in this video, that Tamron weighs 1951 g (4.30 lb)! By comparison, the Canon 100-400 zoom weighs 1380 g (3.04 lb) and it’s already hard enough for me to hold more than a few seconds! More specs on this lens can be found in DPreview.
Grab a drink and a snack as this video on lenses using Canon gear is 2 hours long! But there is an amazing amount of information here and the instructor has some gorgeous award-winning bird photos!
Towards the end of the video, around 1:50 he talks about traveling with all those heavy lenses on planes. He has a different kind of vest which serves a similar function to my Scottevests.
Birders need a wide variety of good lenses to get those stunning “Nat Geo” style shots. While you do need a lot of patience and practice to get your photographyskills to professional level, having the best possible lenses helps a lot. This video by Canon shows just a few of their lenses but is really interesting. How would you like to carry that huge 800mm one around?