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M6 ii+70-300 IS USM ii+teleconverter

Started Aug 28, 2021 | Questions thread
R2D2 Forum Pro • Posts: 26,528
Re: M6 ii+70-300 IS USM ii+teleconverter

Poulty wrote:

Hi all, is anyone using this setup? Is it possible? If so, which brand/model teleconverter and what are the limitations?

TIA

Hmmm. With the M6ii I’d characterize the (BIF) limitations as due more to the body than the lens. Specifically it has to do with the representation of the subject (BIF) in the viewfinder. The “slideshow” effect during a burst makes it very hard to follow the bird, and when one’s own tracking is poor, then the AF strays badly. This has resulted (for me) in a very low BIF keeper rate.

Certainly, BIFs can be done (myself and others have had some success), but even with a mighty lens like the Canon EF 100-400 Mark II, I’ve found them to be an extreme challenge. In fact, virtually every DSLR I’ve owned has out-performed the M6ii for BIFs. (This is the only subject I can say this about though ).

Do you already own the body and lens? Are you in the market for just a TC?

I have a (cheapo) Tamron non-reporting TC that has worked well with my 400 f/5.6. AF is substantially faster than my Canon 1.4x Mark III on that lens. IQ is fair (lots of purple fringing). I much prefer the Canon TC on my 100-400ii though.

I don’t own any of the 70-300 lenses, but I suspect AF would be OK at f/8.

R2

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