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100-400 4.5-5.6 L IS lens ?

Started Oct 30, 2013 | Questions thread
Colin Smith1 Senior Member • Posts: 1,104
Re: 100-400 4.5-5.6 L IS lens ?

I have the 100-400, purchased around ten years ago and it is sharper at 400mm than the 400 F5.6. You can compare these two lenses at http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx  The 100-400 is clearly the winner here.  I have a 5DiIII and I used it last weekend with a 1.4X.  It was pretty sharp and auto focused albeit a bit  slowly.  I have heard that some older copies of the 100-400 were not as sharp at 400, but I have no personal knowledge about that.

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Colin Smith

 Colin Smith1's gear list:Colin Smith1's gear list
Canon EOS R5 Canon RF 24-105mm F4L IS USM Canon RF 100-500mm F4.5-7.1L IS USM Canon RF 85mm F2 Macro IS STM Canon RF 800mm F11 IS STM
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