Canon lens 70-200mm f2.8 or f4.0
Canon 70-200mm f/4 vs f/2.8 Comparison
"Which lens would be best for air shows, birds, etc the 70-200 f2.8 or f4.0. I am using
a Canon EOS 40D. I am a amateur photographer. I need professional advice."
Thanks for checking out the Canon Geek web site and thanks for your question.
Of all the questions I receive, yours is one of the easiest for me to answer. Get the Canon EF 70-200 f/4.
The f/4.0 is a great lens. It performs extremely well. It's so light compared to the Canon 70-200mm f/2.8. The 70-200mm is easier to hold, easier to transport, and a whole lot cheaper to buy.
It is a rare situation that you would need the extra one f/stop of "fastness" that the f/2.8 has over the f/4 version. You still can get great Bokeh at f/4 with the f/4 lens zoomed in to its 200mm setting. I did a lengthy comparison at one point of the two lenses, comparing the differences between shooting at f/4 and f/2.8.
WHICH VERSION OF THE CANON F/4
You do have two options on this lens: Canon EF 70-200mm f/4.0 L USM Lens released in 1999 or the Canon EF 70-200mm f/4.0 L IS USM Lens released in 2006.
BEST BIRD LENS
I included the photo with the Canon 400mm f/5.6 too because it's really a much better lens for bird photography and perhaps an airshow, because of the benefit of stronger magnification. If you're photographing birds at your own birdfeeder, 200mm is enough power. If you're photographing birds out in a natural environment, you really need a 400mm lens or more. Birds are small and they keep their distances form us human beings.
RELATED ARTICLESCanon EF 70-200mm f/4.0Reviews from consumers - Canon 70-200 F4Canon EF 70-200mm f/2.8
Please let me know how you make out!
Written by Bruce Lovelace