Relatively inexpensive 200mm+ lens for 5DM3

Started 9 months ago | Discussions thread
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Dimes
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Relatively inexpensive 200mm+ lens for 5DM3
9 months ago

Hello. I got 5dm3 and 7d with 70-200 f4 is lens. As a hobby I like to shoot airplanes, mainly with my 5dm3. However I find 200mm to be a bit short for me. I am not prepared to buy an L-lens for more than 1000 USD - since it is just a hobby, I am seeking for a cheaper option. I dont care about wide angles, performace at 300mm is the main concern.

Is it real to find one? I am thinking about buying a 1.4 teleconverter or inexpensive 70-300 75-300 canon lens. Which option is better? Should i consider getting tamron or sigma lens instead? Will I get better picture quality compared to 200mm crop?

 Dimes's gear list:Dimes's gear list
Canon EOS 7D Canon EOS 5D Mark III Canon EF 28mm f/1.8 USM Canon EF 35mm f/1.4L USM Canon EF 50mm f/1.8 II +3 more
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