Re: RF 100-500 focus query and issue
PhasmatosOculus wrote:
Hi all,
I have the Canon R7 and the RF 100-500mm lens.
I use one back button focus for al servo with eye detection and a second one for al servo with centre focal point.
I have set Switching tracked subjects in menu AF1 as 0 and menu AF2 Servo AF case to Tracking sensitivity to -2, and accel.deck tracking to +2
I would have stuck to the auto case for the start, I think you overthought the issue and misconfigured the setting which led to the problems you have in question 2.
My questions are as follows:
1. What is this idea about full time manual electronic focus as I just turn the focus ring on the lens instead of using back button focus?
FTM is needed if your lens fails to find a subject or goes to the background. You can then easily lift your fingers from the AF buttons and bring it into roughly the right ballpark to then start AF again.
2. This lens seems to focus hunt, and albeit the setting is to continually focus until subject is in focus, it doesn't seem to unless I use centre focus point al servo and then switch over to al servo with eye detection - what is the best AF settings to use for typical garden birds that I want to take stationary shots off (as oppose to birds in flight)?
I don't see much sense in one shot with live subjects anymore, even if not in flight or fast movement. Previously we were happy if the AF got us a decent result and didn't wander off because we were incapable of keeping the selected AF point trained on the subject. Now subject/eye detection has a decent chance to keep the AF on the correct subject.
3. And what is the point of the focus lever on the front of R7 since whether it is on AF or MF it does nothing (or so i think as I still can auto focus?)
That's meant for lenses that don't have a dedicated AF/MF switch like the two RF-S kit lenses.