Canon BP-511 AE Lock Effects for Combinations of AF Point Selection and Metering Method, Program Line, Metering method, Auto selection AF, AF point selection

REFERENCE

AE Lock Effects for Combinations of AF Point Selection and Metering Method

(when using a mode in the Creative zone)

AF point selection	Auto selection AF	Manual selection AF
Metering method
	AE lock applied to the	AE lock applied to the
Evaluative metering	metered value at the active	metered value at the
	AF point.	selected AF point.
Partial metering	AE lock applied to the metered value at the center AF
	point.
Center-weighted average

Program Line

<> The following program line applies when the camera is in Program AE <> mode.

																					EF50mm f/1.4 USM
																					EF24–85mm f/3.5–4.5 USM WIDE24mm
																					EF24–85mm f/3.5–4.5 USM TELE85mm
			0
		0			0
		1
	O			0		0
IS				2
						0	0
					4
						0		0
						8
								0
							0
							1
					5		6		7	8	9	10	11	12	13	14	15	16	17	18		19		20		21	22
																												32
					4
																												22
					3																								Aperture
																												8
																												16
					2
					1																							11
					0																							4	value
					–1																							5.6
					–2																								(f/no).
					–3																							2.8
					–4																							2
					–5																							1.4
				EV																								1.0
						30		15	8	4	2	1	2		4	8	15	30	60	125		250	500		1000 2000 4000

Shutter speed

Program Line Description

The lower horizontal axis represents the shutter speed, and the right-hand vertical axis represents the aperture value. The combinations of shutter speed and aperture value automatically determined by Program AE are shown as colored lines with respect to the subject brightness (Exposure Value) gradations on the left and top edges of the graph.

Example: Using an EF50 f/1.4 USM lens with a subject brightness of EV12, the point where the diagonal line from EV12 (on the top edge) intersects the Program AE line represents the corresponding shutter speed (1/350 second) and aperture value (f/ 3.5) that the program sets automatically.

The diagonal arrowed lines at the upper left indicate the metering range for the indicated ISO speed.

7

Reference

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