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Dustin has completed his review of the Canon EF 70-300mm f/4-5.6L IS for Canon Rumors. I’m glad he did, as this is one of my favourite Canon lenses. I fell in love with it while in Kenya and you can read my review of the EF 70-300mm f/4-5.6L IS here.
I’m frequently asked “Which lens should I buy, the EF 70-300mm f/4-5.6L IS or the EF 100-400mm f/4.5-5.6L IS?”
I generally give everyone the same answer:
If you have a 400mm or longer prime that takes teleconverters easily, get the EF 70-300mm f/4-5.6L IS. You’ll love how compact it is and its stellar performance. You’re also more likely to bring it along if bag space is at a premium.
If you don’t have a long prime, and don’t plan to get one, then get the EF 100-400mm f/4.5-5.6L IS II. You’ll like having the extra length and the ability to use Canon teleconverters in an emergency.
Dustin is also a big fan of the EF 70-300mm f/4-5.6L IS:
In conclusion, the truth of the matter is that I really, really love this lens. It has a few limitations, sure, but also has a great combination of killer optics and a great focal length in a sturdy and fairly compact body. It is a fabulous travel lens and a credible wildlife option. It even does a great job as a portrait or event lens when you don’t have a more natural option. I love it as a landscape lens as well. It isn’t cheap, but this is a pro grade lens that produces pro grade results.