Sony A7R V Difference between AF Transition Speed & AF Subject Shift Sensitivity

[Raghu Sanjeev]

Dear All,
Can someone explain the exact difference between the AF Transition Speed & AF Subject Shift Sensitivity?

The manual doesn't explain it in clear terms.

Your help is app

 

[Deleted Member 5003]

I belive you are referring to the speed at which focus is found (transition speed) which is a function of the ambient light intensity,
Aperture setting/and your lens drive motor technology.

AF subject shift sensitivity relates to the focus lock " stickiness " for want of a better term whereby if something passes in front of your subject
Or in taking shots you pan across a subject in front of your focused subject and your camera holds focus or drops focus in favour of the secondary subject. The sensitivity can be set in your menus from very sticky to much more loose whereby your camera will hold onto your original focus subject or be more prone to shift focus to the secondary subject.

I belive these are the issues you raise.

 

[Brownie]

AF transition speed is a setting that allows you to choose how quickly the camera focuses when changing subjects within a frame. Like, if you were focused on someone in the foreground, and then shifted to someone in the background. It's used for video, primarily. You'd always want it to be fast when shooting stills.


AF subject shift sensitivity allows you to set how the camera decides when to make the change described above. This one can be valuable for video or stills, when shooting action.

AF Transition Speed​

Sets the focusing speed when the target of the auto focus is switched during movie shooting.
Select a faster value to focus on the subject more quickly. Select a slower value to focus on the subject more smoothly.

AF Subj. Shift Sensitivity​

Sets the sensitivity with which the focus switches to another subject when the original subject leaves the focus area or an unfocused subject in the foreground approaches the center of the focus area during movie shooting.

Select a higher value when you want to shoot a quick-moving subject, or when you want to shoot multiple subjects while switching the focus continually.
Select a lower value when you want the focus to remain steady, or when you want to keep the focus on a particular target without being affected by other subjects.