Getting Started with the Sony A7 IV's Autofocus Modes
The A7 IV's autofocus system is genuinely excellent, a point reviewers agree on consistently, but the sheer number of modes and settings buried in the menu overwhelms a lot of new owners before they've found the combination that actually suits how they shoot. Here's a practical starting point for making sense of it.
Start with Real-time Tracking, not the older AF modes
Sony's Real-time Tracking mode, distinct from the more basic Zone or Wide autofocus areas, uses subject recognition to lock onto and follow a subject through the frame automatically. For most everyday shooting, portraits, pets, casual events, this should be your default starting point rather than the more manual area selection modes that require you to actively position a focus box yourself.
Understanding Eye AF and when to enable it explicitly
Real-time Eye AF for humans and animals can be set to activate automatically within Real-time Tracking, or configured as a dedicated custom button press for more deliberate control. For portrait work specifically, assigning Eye AF to a dedicated back button, separate from the shutter half-press, gives you more precise control over exactly when the camera prioritizes eye detection versus general subject tracking.
Back-button focus, worth learning even if it feels awkward at first
Separating autofocus activation from the shutter button, assigning AF-On to a dedicated rear button instead, is a genuine adjustment if you've always used half-press-to-focus. The payoff is real control over exactly when the camera refocuses, useful for compositions where you want to lock focus and then recompose without the shutter button re-triggering an unwanted refocus.
Choosing the right AF area size for your subject
Wide area tracking works well for a single, clearly defined subject moving somewhat unpredictably. For situations with multiple similar subjects close together, a smaller Zone or Spot AF area gives you more precise control over exactly which subject the camera locks onto, at the cost of needing more active repositioning on your part.
Customizing AF sensitivity for your specific shooting style
Buried under AF Tracking Sensitivity, this setting controls how readily the camera shifts focus to a new subject entering the frame versus holding onto your current subject. For events with a lot of foreground movement, lowering sensitivity helps the camera stay locked on your intended subject rather than jumping to whoever walks past closest to the lens.
A practical setup for portrait and event work
For portrait and casual event shooting specifically, a combination that works well for many photographers is Real-time Tracking with Eye AF enabled, back-button focus assigned for deliberate control, and AF sensitivity set to a moderate rather than maximum responsiveness level, balancing quick subject acquisition against unwanted focus jumps during busier scenes.
A practical setup for fast-moving subjects
For sports, pets in motion, or anything genuinely unpredictable, Wide area tracking with animal or human Eye AF enabled and higher AF sensitivity generally serves better, prioritizing the system's ability to reacquire and follow movement over precise, deliberate control.
Testing your settings before it matters
Before any shoot where autofocus performance genuinely matters, spend a few minutes testing your chosen configuration against a moving subject, even something as simple as a pet walking across a room, confirming the settings behave the way you expect before relying on them for something you can't easily reshoot.
The A7 IV's autofocus is capable enough that most of the work in getting great results comes down to understanding which mode and configuration actually fits your specific shooting situation, rather than any inherent limitation in the system itself.
Common mistakes new owners make with this system
A frequent issue reported by new A7 IV owners is leaving the camera in a general-purpose autofocus configuration for every situation, then blaming the camera when results are inconsistent across genuinely different shooting scenarios. Reviewers and experienced users consistently point out that the system's flexibility is also its main learning curve, it rewards situational configuration far more than a single universal setting ever could.
Using Focus Area Registration for recurring shooting situations
A lesser-known feature lets you register and quickly recall specific autofocus configurations tied to a custom button, useful if you regularly switch between distinctly different shooting scenarios, portrait sessions one day, fast-moving pet photography the next, without wanting to manually reconfigure several settings each time you switch contexts.
Firmware updates and ongoing autofocus improvements
Sony has continued to release firmware updates for the A7 IV since launch, some specifically refining autofocus behavior and subject recognition accuracy. Checking that your camera is running current firmware, rather than assuming out-of-box performance represents the camera's full current capability, is a simple step worth confirming before concluding a particular autofocus limitation is permanent.
Building genuine confidence through deliberate practice
Photographers who report the most success with this system consistently describe a period of deliberate practice, testing configurations against real subjects in low-stakes situations, before relying on a specific setup for genuinely important shoots, a pattern worth following rather than discovering a configuration's limitations for the first time during an event that matters.
