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Canon 200-400 F4 or 400mm F2.8 ?

Started Oct 16, 2015 | Questions thread
Steve Balcombe Forum Pro • Posts: 15,582
Re: Canon 200-400 F4 or 400mm F2.8 ?

nimtree wrote:

Steve Balcombe wrote:

nimtree wrote:

Does the 200-400 zoom sucks dust? How is the in built teleconverter, useful ? Not sure if I want to use the in built one and make it a slow F5.6.

Internal or external makes no difference - any 1.4x TC costs a stop of light.

I understand that but in the field there would not be enough time to remove the lens (in dusty surroundings), put a teleconverter and then attached the lens back, by that time, the tiger would be gone home for dinner.

I don't understand what you mean. You said you don't want to "use the built in one and make it a slow f/5.6". As opposed to what, if not an external one? Then you went on to describe the exact benefit of the thing you don't want to use, i.e. that it removes the need to swap in/out an external TC.

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