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Autofocus

An autofocus (AF) optical system uses a sensor, a control system and a motor to focus on an automatically or manually selected point or area. An electronic rangefinder has a display instead of the motor; the adjustment of the optical system has to be done manually until indication. Autofocus methods are distinguished as active, passive or hybrid types.

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Overview

History

Active

Passive

Hybrid autofocus

Comparison of active and passive systems

Trap focus

Focus motors

Manual focus override

Advanced semantic analysis

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Map overview Semantic statistics

Autofocus

Nodes117
Edges116
Triples102
Avg. degree1.98
Density0.017094
Components1

How this topic connects Entity context

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Autofocus

Top relations

related to Trap focus · 21
Autofocus → AF, AF-S, By, Canon DSLRs, Canon EOS, EOS, III-1, III-4, K-5, K-x, Magic Lantern, Nikon, On EOS, Pentax, Single, SLR, The, The EOS, This, Trap
related to Active · 14
Autofocus → Active AF, Canon AF35M, Compact, Contax T2, In, It, LED, Nikon, Polaroid, Spectra, SX-70, T3, There, This
related to history · 11
Autofocus → Between, Correfot, In, Konica C35 AF, Leica, Leitz, OneStep, Photokina, SLR, The, The Polaroid SX-70 Sonar
related to Contrast detection · 10
Autofocus → AF, Canon, Contrast-detect, Contrast-detection, Dual Pixel CMOS AF, In, Mirrorless, Most DSLRs, The, This
related to AI Servo · 9
Autofocus → AF-C, AI, AI Servo, Also, Canon SLR, Nikon, Pentax, Sony, When
related to Focus motors · 7
Autofocus → Lens-based, Magnets, Modern, Stepper, The, VCMs, Voice
related to External links · 4
Autofocus → AutofocusCanon EOS DSLR Autofocus, Explained, Flash, How Stuff Works
related to Manual focus override · 4
Autofocus → In, Pentax, Quick Shift, There
related to Passive · 4
Autofocus → However, Passive, Passive AF, They
related to Assist lamp · 3
Autofocus → AF, IR, The

Important terminology Word statistics

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Important terminology

focus af contrast cameras system camera lens used subject canon light lenses systems sensor sensors phase-detection nikon optical passive active

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Autofocusis aelectronic rangefinder0.90text
Autofocusis acommon method in digital cameras that lack shutters and reflex mirrors0.90text
focusing magnifiersinstance ofalthough more precise manual focus can be achieved with special accessories0.80text
Nikoninstance ofand in other brands0.80text
Sonyinstance ofand in other brands0.80text
and Pentaxinstance ofand in other brands0.80text
under the nameinstance ofand in other brands0.80text
Autofocusrelated to ActiveActive AF0.60section
Autofocusrelated to ActiveThere0.60section
Autofocusrelated to ActiveIn0.60section
Autofocusrelated to ActivePolaroid0.60section
Autofocusrelated to ActiveSpectra0.60section

Related concept clusters Concept neighborhoods

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    Min side: 3
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