EOS Documentation Project

Autofocus and EOS Camera Body Compatibility (draft)

by Julian Loke, Gary Fisher and Toomas Tamm

Contents

• Introduction
• Table
• Legend

  None  Single  Single Predictive  Single, Fast cross  Single Cross  Triple, centre cross  5 in a row, centre cross  5 in a row, centre cross high-precision  7 area, centre cross  45 zone CMOS 

• Revision History
• Comments

Introduction

Move your mouse cursor over the table for more detail.

Table

	2.8	4.0	5.6	8.0	11
Example Lens Apertures	f/1.4 f/2.8 f/2.8-4.0	f/3.5-5.6 f/4.0 f/2.8+1.4xTC	f/4.0-5.6 f/4.5-5.6 f/5.6	f/4.0+EF2x f/5.6+EF1.4x	f/5.6+ EF1.4x+EF2x	For variable-aperture zooms, the smaller number is important Most non-Canon brand teleconverters do not report combined aperture
Autofocus	2.8	4.0	5.6	8.0	11	Top	High	Mid	Basic	Value
None	.	.	.	.	.				EF-M
Single	|	|	|	.	.		EOS 620	EOS 650	EOS 700, EOS 750, EOS 850, EOS 1000, EOS Rebel, EOS 1000N, EOS Rebel II,
Single Predictive	|	|	|	.	.		EOS 600, EOS 630, EOS RT
Single, Fast cross	+	|	|	.	.	EOS 1
Single cross	+	+	+	.	.			EOS 100, EOS Elan
Triple, centre cross	- + -	- + -	- + -	. . .	. . .		EOS 10S	EOS 50, EOS 55, EOS D30, EOS D60	EOS 500, EOS Rebel XS, EOS Kiss, EOS 500N, EOS Rebel G, EOS New Kiss, EOS IX, EOS IX Lite	EOS 88, EOS 888, EOS 5000, EOS 3000
Autofocus	2.8	4.0	5.6	8.0	11	Top	High	Mid	Basic	Value
Quintuple, centre cross	- - + - -	- - + - -	- - + - -	. . . . .	. . . . .		EOS 5, EOS A2E
Quintuple, centre cross high-precision	- - # - -	- - | - -	- - | - -	. . . . .	. . . . .	EOS 1N, EOS 1NHS, EOS 1NRS, DCS 1, DCS 3, DCS 2000, DCS 6000
7 area, centre cross	|     - - + - -     |	|     - - + - -     |	|     - - + - -     |	. . . . . . .	. . . . . . .			EOS 30, EOS 33, EOS 7, EOS Elan 7E, EOS 10D	EOS 300, EOS Rebel 2000, EOS Kiss III, EOS Kiss III L, EOS 300V, EOS Rebel Ti, EOS Kiss 5, EOS 300D, EOS Digital Rebel, EOS Kiss Digital, EOS 350D, EOS Rebel T2, EOS 300X, EOS Digital Rebel XT, EOS Kiss Digital N	EOS 66, EOS 3000N, EOS Rebel XS N
9 area, centre cross	| -                - -            #           - -                - |	| -                - -            +           - -                - |	| -                - -            +           - -                - |	. .                . .           .           . .                . .	. .                . .           .           . .                . .			EOS 20D, EOS 30D	EOS 400D, EOS Digital Rebel XTi, EOS Kiss Digital X
9 cross	+ +               + +            %           + +                + +	+ +               + +            +           + +                + +	+ +               + +            +           + +                + +	. .                . .           .           . .                . .	. .                . .           .           . .                . .			EOS 40D
9 cross & 6 assist	+ +   -   |   -   + +            #           + +   -   |   -   + +	+ +   -   |   -   + +            +           + +   -   |   -   + +	+ +   -   |   -   + +            +           + +   -   |   -   + +	. .                . .           .           . .                . .	. .                . .           .           . .                . .		EOS 5D
45 zone CMOS	- - - # - - - - - - - # # - - - - - - - - - # - - - - - - - - - # # - - - - - - - # - - -	- - - - - - - - - - - - - - - - - - - - - - # - - - - - - - - - - - - - - - - - - - - - -	- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -	. . . . . . . . . . . . . . . . . . . . . . - . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	EOS 1V, EOS 1D, EOS 1Ds, EOS 1D II, EOS 1Ds II, EOS 1D II N	EOS 3
19 cross & 26 assist	# - - # - - # # - - # - - # - - # # - - # - # - # - - # # - - # - - # - - # # - - # - - #	+ - - + - - + + - - + - - + - - + + - - + - # - + - - + + - - + - - + - - + + - - + - - +	- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -	. . . . . . . . . . . . . . . . . . . . . . - . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	EOS 1D III
Autofocus	2.8	4.0	5.6	8.0	11	Top	High	Mid	Basic	Value

.	Autofocus disabled.
|	Sensor detects vertical detail.
-	Sensor detects horizontal detail.
+	Cross-sensor, detects horizontal and vertical detail.
#	High-precision cross-sensor, detects horizontal detail, and high precision vertical detail
%	High-precision cross-sensor, detects high precision vertical detail and high precision horizontal detail

Legend

None

• No autofocus sensors.
• Split-image viewfinder focussing aid.

Single

• Central sensor, detects vertical detail (|).
• Autofocus disabled beyond f/5.6.

Single Predictive

• Central sensor, detects vertical detail (|).
• Predictive autofocus in SERVO AF mode
• Autofocus disabled beyond f/5.6.

Single, Fast cross

• Lenses f/2.8 and faster use a central cross sensor which detects horizontal detail and vertical detail (+).
• Lenses f/5.6 and faster use a central sensor that detects vertical detail (|).
• Autofocus disabled beyond f/5.6.

Single Cross

• Central cross sensor, detects horizontal detail and vertical detail (+).
• Autofocus disabled beyond f/5.6.

Triple, centre cross

• Central cross sensor, detects horizontal detail and vertical detail (+).
• Peripheral sensors detect horizontal detail (-).
• Autofocus disabled beyond f/5.6.

Quintuple, centre cross

• Central cross sensor, detects horizontal detail and vertical detail (+).
• Peripheral sensors detect horizontal detail (-).
• Autofocus disabled beyond f/5.6.

Quintuple, centre cross high-precision

• Central cross sensor, detects horizontal detail and vertical detail (+).
• Lenses f/2.8 and wider use a high-precision central cross-sensor (#).
• Lenses f/5.6 and wider use a standard precision central cross-sensor (+).
• Peripheral sensors detect horizontal detail (-).
• Autofocus disabled beyond f/5.6.

7 area, centre cross

• Central cross sensor, detects horizontal detail and vertical detail.
• 5-in-a-row sensors detect horizontal detail (-).
• Upper and lower sensors detect vertical detail (|).
• Autofocus disabled beyond f/5.6.

45 zone CMOS

• Lenses f/2.8 and faster use 7 central high-precision cross-sensors and 38 normal-precision sensors that detect horizontal detail only.
• Lenses f/4.0 and faster use 1 central high-precision cross-sensor and 44 normal-precision sensors that detect horizontal detail only.
• Lenses f/5.6 and faster use 45 normal-precision sensors that detect horizontal detail only.
• Lenses f/8.0 and faster use a single normal-precision sensor sensitive to horizontal detail only.
• Autofocus disabled beyond f/8.0.

Revision History

v0.6 2007Nov22 jul: 40D, 5D, 1DIII updates.
v0.5 2005Aug19 jul: rollover legend titles
v0.4 2005May22 jul: 300X, 350D, size=-3
v0.3c2005Feb12 mu: more corrections, 45 instead of 35
v0.3b2005Feb09 mark u: correction, use 45 instead of 35 zone
v0.3 2004Sep18 jul: AF9 sensor
v0.2c2003Dec21 jul: legend typos; lens aperture examples
v0.2b2003Dec16 jul: edits, 35 zone
v0.2 2003Dec11 jul: rewrite; gaf: EOS 1
v0.1b2002Sep04 jul: minor reformat
v0.1 2001Jun21 jul: Original draft

Comments

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