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

Started Oct 16, 2015 | Questions thread
bigfatron Contributing Member • Posts: 777
Re: Canon 200-400 F4 or 400mm F2.8 ?
1

RogerZoul wrote:

Steve Balcombe wrote:

Myrgjorf wrote:

ISteve 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 don't agree. In my experience the built-in TC takes less IQ hit than the external (Canon x1.4 mk3). Both makes it a 280 - 560 F5.6 though.

For goodness sake, I didn't say anything about IQ. The external TC makes it 27 mm longer and 225 g heavier as well, but I didn't say anything about that either.

Little confused here. The OP asked how is the in built TC, useful or not. You said it makes no difference you just lose a stop of light. The other poster said the in-built TC has better image quality, which conflicts with what you said since you *implied* that there is no difference in IQ. Hence, you did say something about IQ. It also makes very little sense to buy a lens with an in-built TC if you don't plan to use it, or use an external one.

He never said it made no difference, nor did he imply anything about IQ.  He merely pointed out that a 1.4x TC will hit you for a stop of light, whether its internal or external. The confusing part is the original post.

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Canon EOS 5D Mark IV Canon EF 100mm f/2.8 Macro USM Canon EF 24-105mm f/4L IS USM Canon Extender EF 1.4x III Canon EF 35mm F2 IS USM +3 more
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