05-24-2025 05:45 PM
What do the settings of "Case Auto Character", "Tracking Sensitivity" and "Accel./decel. tracking" do in the detail customization of the AF-ON button? Are they related/dependant on the value of "Servo AF characteristic" set in the detail customization?
Thank you
Lakshman
Solved! Go to Solution.
05-27-2025 07:39 AM
The four entries are linked.
Servo AF characteristics can be either M or AUTO, if you place a check mark in the left column for this entry then it means that while the button is pressed the cameras current setting is overridden with the M or AUTO you choose in these detail settings.
For the AUTO setting, there is a corresponding Case Auto Character that can be used to override the camera set value with the vale set in this menu. You need a check mark in the left hand column.
For the M setting of Servo AF characteristic there are two values; Tracking Sensitivity and "Accel./decel. tracking that can singly or both be used to override the camera set values.
To test this actually happens you will need to find these characters in the metadata of a captured image. I used DPP to show the settings for an image of mine, you can see I used the Auto case with the default 0 setting for case auto character.
When you take an image with the AF-ON button pressed and different settings are overriding the camera's settings these different values will show.
05-24-2025 06:19 PM
Those are settings on the first couple screens in the AF menu group. I would guess that you can adjust them by pressing the button, instead of stopping what you are doing and go into the menu system.
05-24-2025 10:44 PM
@lwatawala wrote:
What do the settings of "Case Auto Character", "Tracking Sensitivity" and "Accel./decel. tracking" do in the detail customization of the AF-ON button? Are they related/dependant on the value of "Servo AF characteristic" set in the detail customization?
Thank you
Lakshman
Hello, Lakshman!
The best I can tell, and I may have overlooked it, is the new cases in the R5 mark II must be set from that menu, that is, you set it to your liking and any time you switch from One shot to Servo using a button, your Servo preferences are used. I did look through the AF/ON button customization page of my R5 II and only saw where you can use that button [AF/ON] to toggle between One shot and Servo.
On a side note: I realize that a lot of folks were caught off guard when the cases were reduced to only two, but my preference has always been to use only one case (they were pre sets anyway) because I set "Tracking sensitivity" to lock on, a hard -2, because obstructions are often part of the equation for me. I set "Accel./decel." to +1 as my subjects tend to sometimes be erratic, so those are basically my settings for most scenarios. I keep this menu in "My menu" so I can fairly quickly get at it if I need to tighten/loosen things up.
I hope I am understanding your question correctly 🙂
Newton
05-25-2025 08:39 AM
Thank you Newton,
On the AF.3 menu "Servo AF character" I also have my selection set to M and then adjust the Tracking Sensitivity to -2. However, I had my Accel./decel. set to -1. I'm primarily a wildlife/bird photographer. After reading your second paragraph, now I'm inclined to set Accel./decel. to +1 as your reasoning for that makes good sense.
On the subject of AF-ON customization, my understanding is that values I select on that customization list are actually overrides on the base settings that I have selected with the AF menus. And these overridden values becomes active when I use the AF-ON button (back button focusing) to focus. So, unless I need to override my "AF Servo character" while using AF-ON, I should leave them alone and let the base values stay in effect.
What is unclear in the way the list of items are laid out in the AF-ON customization list is seemingly the "Case Auto character" is applicable only if I select "Servo AF characteristics" to "AUTO" and that the "Tracking Sensitivity" and "Accel./decel. tracking" are applicable only if I select "Servo AF characteristics" to "M".
Do you think this understanding correct?
Thank you
Lakshman
05-25-2025 10:32 AM - edited 05-25-2025 10:34 AM
“
What is unclear in the way the list of items are laid out in the AF-ON customization list is seemingly the "Case Auto character" is applicable only if I select "Servo AF characteristics" to "AUTO" and that the "Tracking Sensitivity" and "Accel./decel. tracking" are applicable only if I select "Servo AF characteristics" to "M".
Do you think this understanding correct? “
———————-
Servo tracks moving subjects. One Shot does not. The tracking settings really have no meaning in One Shot AF mode.
05-25-2025 08:08 PM
Thank you for your reply. But, I'm sorry, you may have misunderstood my question. I'm not concerned with ONE-SHOT mode. I was just trying to understand what the AF Servo behaviour is and how one would override the base settings with parameters one could ovrride in the AF-ON customization.
Thanks
Lakshman
05-25-2025 11:06 PM
@lwatawala wrote:
On the subject of AF-ON customization, my understanding is that values I select on that customization list are actually overrides on the base settings that I have selected with the AF menus. And these overridden values becomes active when I use the AF-ON button (back button focusing) to focus. So, unless I need to override my "AF Servo character" while using AF-ON, I should leave them alone and let the base values stay in effect.
What is unclear in the way the list of items are laid out in the AF-ON customization list is seemingly the "Case Auto character" is applicable only if I select "Servo AF characteristics" to "AUTO" and that the "Tracking Sensitivity" and "Accel./decel. tracking" are applicable only if I select "Servo AF characteristics" to "M".Do you think this understanding correct?
Honestly, I don't use BBF or modify any of my buttons, dials, or shutter... Well, that's not entirely true, I do have my lens control ring set to change AF areas 🙂 I use 11 different cameras and since getting the R's (4), BBF has fell out of favor for me, I literally don't have time to remember which button does what when I grab a particular camera for a split second shot, but I know where the shutter button is and how to lock light metering on all of them, LOL! However I do know how to set it up and understand that it is useful to a lot of people as I've used various forms of BBF on my DSLR's, and get it.
Here is something that might be of interest concerning the AF-ON button configuration and Auto Focus in particular. In the AF menu structure, page 7, there is an option named "Register/recall AF-related settings" (page 569 in the advanced users guide). This will allow you to set up AF the way you want for a particular scenario and store it in a "Set" for "Recall". By default, they are labeled Set 1, Set 2, and so on, but you can rename them. You can bind this to the AF-ON button. So far, I've only tested 1 set, so I'm not sure if the AF-ON button toggles through the sets or brings up a list. I'll get around to it eventually, but I'm sure you will experiment with it 🙂
Newton
05-25-2025 11:58 PM
@Waddizzle wrote:
Servo tracks moving subjects. One Shot does not. The tracking settings really have no meaning in One Shot AF mode.
With the R5 II, and I think the R6 II, you can select one shot with single FP, enable whole are tracking, and it will track subjects and eyes, if enabled, without being in Servo. I keep eye tracking set to auto with single shot, single AF point, and my R5 II follows my subject or its eye. My single center AF point shows, but there is a secondary FP that tracks, sometimes it covers my bird and sometimes it's the size of my normal FP but is on an eye.
Newton
05-27-2025 07:39 AM
The four entries are linked.
Servo AF characteristics can be either M or AUTO, if you place a check mark in the left column for this entry then it means that while the button is pressed the cameras current setting is overridden with the M or AUTO you choose in these detail settings.
For the AUTO setting, there is a corresponding Case Auto Character that can be used to override the camera set value with the vale set in this menu. You need a check mark in the left hand column.
For the M setting of Servo AF characteristic there are two values; Tracking Sensitivity and "Accel./decel. tracking that can singly or both be used to override the camera set values.
To test this actually happens you will need to find these characters in the metadata of a captured image. I used DPP to show the settings for an image of mine, you can see I used the Auto case with the default 0 setting for case auto character.
When you take an image with the AF-ON button pressed and different settings are overriding the camera's settings these different values will show.
05-27-2025 09:20 AM
Thank you Brian. This is very clear. I will mark your reply as "Accept as solution".
Can you please let me know how to got the list of exif data in DPP?
Thank you
Lakshman
03/18/2025: New firmware updates are available.
EOS R5 Mark II - Version 1.0.3
02/20/2025: New firmware updates are available.
RF70-200mm F2.8 L IS USM Z - Version 1.0.6
RF24-105mm F2.8 L IS USM Z - Version 1.0.9
RF100-300mm F2.8 L IS USM - Version 1.0.8
RF50mm F1.4 L VCM - Version 1.0.2
RF24mm F1.4 L VCM - Version 1.0.3
01/27/2025: New firmware updates are available.
12/18/2024: New firmware updates are available.
EOS C300 Mark III - Version 1..0.9.1
Canon U.S.A Inc. All Rights Reserved. Reproduction in whole or part without permission is prohibited.