5D3 vs 6D AF in low light

[Wildfire]

Animals often also aren't very enthusiastic about getting the af assist in their eye (and that's why I usually focus) - unfortunately the 60d (af rated up to +0.5lv) uses af assist very often, so I'm looking forward to the 6d.

The 60D doesn't have an AF assist beam, it just uses the built-on flash for AF assist.

Try mounting a 430EX or higher model speedlight to your 60D and you'll get an unobtrusive red AF-assist beam.

 

[Marsu42]

Animals often also aren't very enthusiastic about getting the af assist in their eye (and that's why I usually focus) - unfortunately the 60d (af rated up to +0.5lv) uses af assist very often, so I'm looking forward to the 6d.

The 60D doesn't have an AF assist beam, it just uses the built-on flash for AF assist.

Thanks for enlightening me :->

Try mounting a 430EX or higher model speedlight to your 60D and you'll get an unobtrusive red AF-assist beam.

If you look at my gear list (to the left) you'll see that I've got a 430ex2 & 600rt ... it's just my experience the red af assist is not as "unobtrusive" as you seem to think. And I never do pre-flash, it's just so annoying.

I just stated "60d" because a af system rated to up to +0.5lv is bound to use af assist more often than say the 6d that is supposed to focus up to -3lv.

 

[jonathan7007]

All,
The wild card in these discussions is what appears to be some variability in the 5Dmk3 copies'AF abilities. I feel I got a flawed body and it seems slower than it "should". Unscientific, absolutely, and I should work up a test here that Canon Service can replicate. These discussions are helpful for establishing what the limits should be. My comparison is my 5Dmk2. For any of the tests described the next level is bringing a lot of 5Dmk3 bodies into the same setup and looking for variations in "lock" time. I bought my body in May last year.

I didn't figure this out in time to exchange it. My bad! Canon has already looked at this body once.

I need to find an acquaintance with a 5Dmk3 and time to compare. That would be interesting.

Aaaaarg. <anger>

jonathan7007