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DSLR autofocus through the viewfinder vs live view
Choose the focusing mode for subject movement, precision, screen angle and battery needs.
Start with the real use
A DSLR can use a dedicated phase-detection module through the optical viewfinder and sensor-based focus in live view. Speed, coverage and face detection can differ greatly.
Understand the compromise
Viewfinder focus may need calibration with some lenses, while live view can be precise but slower on older bodies and consumes more battery. Video normally uses live-view behaviour.
Verify the exact product
Test the exact body and lens in both modes, including continuous focus, low light and off-centre subjects.
Before you decide
- Decision to record: Choose the focusing mode for subject movement, precision, screen angle and battery needs.
- Comparison to make: A DSLR can use a dedicated phase-detection module through the optical viewfinder and sensor-based focus in live view. Speed, coverage and face detection can differ greatly.
- Trade-off to accept: Viewfinder focus may need calibration with some lenses, while live view can be precise but slower on older bodies and consumes more battery. Video normally uses live-view behaviour.
- Evidence to verify: Test the exact body and lens in both modes, including continuous focus, low light and off-centre subjects.
Common questions
Why is focus accurate on the screen but not the viewfinder?
The two systems can use different focus paths; setup or service may be needed.
Is live view always slower?
No. Newer designs vary, but older DSLRs often show a larger difference.
About this guide
This is buying advice based on documented features and practical comparison criteria, not a hands-on product test. Check the exact manufacturer specification for compatibility and current support. Our editorial policy · Report a correction.
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