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500mm vs 600mm?

Started Nov 13, 2017 | Questions thread
BirdShooter7 Veteran Member • Posts: 9,134
Re: 500mm vs 600mm?

If you are suggesting that there is no advantage of having an f/2.8 lens vs f/4 lens vs f/5.6 lens... when it comes to AF in a given lighting condition (particularly low light) then you don't have a clue what you are talking about. That seemed to be what you were suggesting in your original post.

Yes giving more light to a lens with a max aperture of f/8 will not help if AF when the sensors are only good to f/5.6.  I don't know of anyone personally who believes such a thing.  It seems like you are just making this statement to make yourself feel big.

Have a nice day!

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Some of my bird photos can be viewed here: https://www.flickr.com/photos/gregsbirds/

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