RF 100-500mm F4.5-7.1 L IS USM and RF extenders

Started 2 weeks ago | Discussions thread
ThePointblank Regular Member • Posts: 104
Re: RF 100-500mm F4.5-7.1 L IS USM and RF extenders
2

Erwann Loison wrote:

I thought L glass was not going lower than 5.6 (I don't know the whole L range though).

I guess it was to maintain AF on DSLR but still, 7.1 is a bit much. I was hoping for something different for a Canon "super tele zoom".

My mind was already gone anyway.

Well, with the current 100-400, it goes to f/8 with the 1.4x TC, but you go up to 560mm.

To get to 500 on the 100-400 and 1.4x TC combo, the equivalent would be about 360mm, and at that focal length, the lens is a f/5.6 lens, which is f/8 with the TC.

A f/7.1 is about 1/3 of a stop brighter than the 100-400 & 1.4x TC combo. To me, that's an improvement, and if the IQ is equivalent or better than the 100-400 and 1.4x TC combo, the upcoming 100-500 is a more flexible option; unless you truly need the extra 60mm of focal length, the 100-500 is going to be the better lens.

 ThePointblank's gear list:ThePointblank's gear list
Canon EOS R Canon EF 100mm F2.8L Macro IS USM Canon EF 100-400mm F4.5-5.6L IS II Canon EF 50mm f/1.8 STM Canon RF 24-105mm F4L IS USM
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