Autofocus Modes

Single locks. Continuous tracks. Manual is full control.

Single / One-Shot AF

Canon: One-Shot Nikon: AF-S Sony: AF-S

Locks focus when you half-press shutter. Will not refocus until you release and press again.

Best for: Still subjects: portraits, landscapes, products

Continuous / Servo AF

Canon: AI Servo Nikon: AF-C Sony: AF-C

Continuously adjusts focus as subject moves. Tracks movement in real time.

Best for: Moving subjects: sports, wildlife, kids, pets

Auto / Hybrid AF

Canon: AI Focus Nikon: AF-A Sony: AF-A

Camera decides between single and continuous based on subject movement.

Best for: Unpredictable situations, general use

Manual Focus

All cameras: MF

You control focus via lens ring. Use focus peaking or magnification to assist.

Best for: Macro, landscapes at infinity, astrophotography

Focus Area Selection

Where the camera looks for sharpness

Single Point

You choose exactly where to focus. Most precise, requires careful placement.

Zone / Area

Camera focuses within a selected region. Balance of control and flexibility.

Wide / Auto Area

Camera chooses from all points. Fast but may focus on the wrong subject.

Eye / Face Detection

Finds and tracks eyes or faces automatically. Strong default for portraits.

Golden rule: Focus on the eyes. In portraits, the eyes should be the sharpest part of the image. Soft eyes make the photo feel wrong even when everything else is sharp.

Which Mode When

Subject still or moving? Match the row. Set mode before you shoot.

Scenario AF Mode Focus Area Notes
Portrait (still) Default AF-S Eye AF or single point Nearest eye. Recompose after lock.
Sports / action AF-C Zone / tracking Burst mode. Shutter 1/1000s+.
Wildlife AF-C Zone AF Animal-eye detect if available.
Kids / pets AF-C Zone + Eye detect Shutter 1/500s+. Zone when movement is erratic.
Macro MF Single + peaking f/8–f/11. Focus stack for depth.
Landscape AF-S → MF Single at hyperfocal AF to set distance, then lock MF between shots.
Astrophotography MF Infinity Focus peaking on a bright star. Tape the ring.
AF hunting / low light MF Single on contrast edge Or AF assist light. Wider aperture helps AF acquire.
The rule

Still subject: AF-S. Moving subject: AF-C. When AF fails or precision matters: MF.

Setting Focus in the Field

Match mode to movement, place the point, verify sharpness

  1. Still or moving?

    Still: AF-S. Moving: AF-C. Macro or astro: MF. Use the lookup table above.

  2. Choose focus area

    Single point for precision. Zone for action. Eye detect for people.

    Portrait: Eye AF Sports: Zone AF Macro: MF + peaking
  3. Half-press to acquire focus

    AF-S: lock, recompose, fire. AF-C: track while holding, fire in bursts. Check the sharpest point on the rear LCD at 100% zoom.

  4. Back-button focus (optional)

    Assign AF to a rear button (AF-ON). Shutter fires only. Decouples focus from exposure for AF-C tracking and recomposing without refocusing.

    Menu: Custom Buttons AF-ON = AF-On Shutter = Meter + Release

Cheat Sheet

Quick answers for the field

Portrait? AF-S + Eye AF or single point on nearest eye
Sports / action? AF-C + Zone tracking, shutter 1/1000s+
Kids / pets? AF-C + Zone or Eye detect, shutter 1/500s+
Landscape? AF-S at hyperfocal, then switch to MF to lock
Macro? MF + focus peaking, f/8–f/11, focus stack if needed
AF hunting? Switch to MF, or single point on high-contrast edge
Recompose after lock? AF-S only. AF-C will refocus if subject moves
Low light AF fail? Use AF assist light, wider aperture, or manual focus with peaking

Common Questions

Quick answers on AF-S vs AF-C, manual focus, back-button focus, and focus areas.

What is the difference between AF-S and AF-C?

AF-S (Single) locks focus when you half-press and does not refocus until you release. AF-C (Continuous) keeps adjusting focus while the shutter button is held, tracking moving subjects.

When should I use manual focus?

Macro, astrophotography, landscapes after hyperfocal lock, and any scene where AF hunts. Use focus peaking and magnification to assist.

What is back-button focus?

A custom setup where a rear button (often AF-ON) handles focus and the shutter button fires only. Decouples focus lock from the shutter for AF-C tracking and recomposing.

Which focus area mode should I use?

Single point for precision (portraits, macro). Zone for moving subjects. Wide/Auto for fast grab shots. Eye/Face detection for people when available.

Keep Learning

Sharpness, motion, and scenario settings