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Canon EF 70-200mm f/2.8L IS II - or - Canon EF 100-400mm f/4.5-5.6L IS II

Started Jan 9, 2016 | Discussions thread
Henrik Herranen Senior Member • Posts: 1,732
Re: Canon EF 70-200mm f/2.8L IS II - or - Canon EF 100-400mm f/4.5-5.6L IS II
2

Hello Pietro!

Pietro Marchesi wrote:

I use a Canon 6D and sometimes my old 20D as a second camera for reach 112-320mm.

I am surprised no-one has commented on this, but here it is:
There is no reach advantage using a 20D over a 6D.

The 20D has a full 8.2 megapixels.

If you take an image with your new and shiny 6D, it will have 20.2 megapixels. If you crop it on your computer to the same size as what your 20D captures, you will still have 20.2/(1.6^2) = 7.9 megapixels, which for all intents and purposes is the same as the 20D's native 8.2 MP.

Except...
Your 6D is almost ten years newer technology so the quality of the individual pixels will inevitably be much better than with your 20D. Then there's handling. Think of how small and low-resolution the 20D's LCD is, and how slow it is to chimp images with it.

So, quite honestly, as much as I have respect for older Canon cameras, you're going to get better results by taking your telephoto images with your 6D and cropping them than taking them natively cropped with an old 20D.

Kind regards,
- Henrik

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