DPReview.com is closing April 10th - Find out more

AF-area using 600mm/f11 and 800mm/f11 with EOS R6 II surprises a bit...

Started 4 months ago | Discussions thread
Duckman21 Regular Member • Posts: 273
Re: AF-area using 600mm/f11 and 800mm/f11 with EOS R6 II surprises a bit...

Stig Nygaard wrote:

I just thought some would fine this interesting.

The AF area using RF600/11 and RF800/11 on EOS R3 are larger than when used on the R6 or R5. Since they are all fullframe cameras, there are no crop-factor to explain that. My theory was it had something to do with R3's sensor being stacked. But apparently there are other factors involved. It turns out the R6II offer same 80%x80% AF area as the R3 when used with those lenses...

HxW:

R5/R6: 40% x 60%
R7/R10: 60% x 80%
R3: 80% x 80%
R6II: 80% x 80%

https://cam.start.canon/en/H001/supplement_0110.html

Makes you wonder about the "hammer"! The EF 100-400mm II + 2X Extender (effectively 800mm f11) apparently supports the full AF area.

What I'm curious is whether AF acqusition is actually faster or not. On my R6 I find the 800 f11 usually tracks nicely but struggles to acquire focus at times. While not as rampant as the Sigma or Tamron 150-600mm, it does have occasional episodes of losing focus (bordering on pulsing).

-- hide signature --

Instagram @FYLegend21
500px @frankyboy5

 Duckman21's gear list:Duckman21's gear list
Canon EOS Rebel T6s Canon EOS R6 Canon EF-S 18-135mm F3.5-5.6 IS STM Tamron SP 150-600mm F5-6.3 Di VC USD G2 Canon RF 800mm F11 IS STM
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow