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Rf 100-400mm f5.6-8 + 1.4 extender

Started Jan 30, 2022 | Discussions thread
tkbslc Forum Pro • Posts: 17,522
Re: Rf 100-400mm f5.6-8 + 1.4 extender
2

here_and_there wrote:

tkbslc wrote:

Catama wrote:

Anyone have any experience with this combo? My wife shoots with this lens on her R5 l because it appeals to her weight-wise. I shoot with the EF 100-400 mm and the 1.4x III extender on my R5 with excellent results. I’m concerned because her lens is not an L lens and before I plunk down $500 I’d like to know if it will work without significant resolution degradation. Thanks!

400mm f8 + 1.4x = 560mm f11

You might do just as well buying the 600mm f11, which doesn't cost much more than the 1.4x TC. It appears to have much better image sharpness as well:

Canon RF 100-400mm F5.6-8 IS USM Lens Image Quality (the-digital-picture.com)

Good point. However, the 600 is almost twice the weight of the RF 100-400, and I guess twice the size since it needs to be extended to be used. And no zoom.

R5 is still 18MP in 1.6x crop mode. Have you considered using that? Gives 640mm for zero additional weight.

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