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RF extender experiences with RF 100-500 1.4x vs 2.0? Locked

Started Oct 16, 2020 | Discussions thread
This thread is locked.
Steve Balcombe Forum Pro • Posts: 15,571
Re: RF extender experiences with RF 100-500 1.4x vs 2.0?

David M. Anglin wrote:

  • Here is what I don't like about the 1.4x + 100-500
    • lens has to be extend to 300mm before you can add the 1.4x and will not retract below 300mm
    • Loose the use of the 100-420 range of the lens with the 1.4x TC connected
    • Inconvenient to add/remove TC when animals are rapidly changing distance and limits creative framing to include the environment.

This is why I have resolved not to fork out the £550 that the RF 1.4x currently costs, for something which is fundamentally unsatisfactory. It's also somewhat less necessary, when you compare the 'pixels per bird' of the R5 plus 100-500 vs the 5D4 plus 100-400. The new combination gives an increase of 52% linear, which is huge and obviously more than using a 1.4x on the 5D4 combination. And that's before you take into account the more accurate and reliable AF.

Never say never of course, and if at some point in the future I need an Extender for an RF big white it will be interesting to at least give it a try on the 100-500.

Regarding the 2x, I think we can safely say never, at least not on this lens!

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