Canon Speedlite 540EZ Manual page 30

AF Auxiliary Light & Effective
Distance Range
Corresponds to 5 focusing points. Center:
approx. 0.5 ~ 15m / 1.7 - 49.5ft (in dark situa¬
tions); Left/Right: approx. 0.7 ~ 6m / 2.3 ~ 19.8ft
(in dark situations).
Power Supplies
Built-in power supply:
(1) Four AA-size alkaline-manganese batteries
(LR6/AM-3)
(2) Four AA-size Ni-Cd batteries (KR15/51)
(3) Four AA-size lithium batteries (FR6)
External power supplies:
(1) Six AA-size alkaline-manganese batteries
(LR6/AM-3)
(2) Battery Magazine TP (holds six C-size alka¬
line-manganese batteries [LR14/AM-2])
(3) Ni-Cd Pack TP
Save Energy Function
When the main switch is set to the SE position,
the power automatically turns off after 90 sec¬
onds of inactivity.
Mode Memory
The 540EZ automatically memorizes its status
information including the control mode and zoom
position when the power is turned off.
Dimensions
80 (W) x 138 (H)x 112(D) mm/
3-1/8" (W) x 5-7/16" (H) x 4-7/16" (D)
Weight
405g / 14.2oz (main unit only)
Guide Numbers: (ISO 100 • m)
Coverage angle (mm)
18 24
28 35
50 70
80 105
Normal (full power) firing (G-No)
16
28 30
36 42
46 50 54
Quick firing ■
T
Same as manual firing at 1/2-1/16 outf out leve s
Manual firing
(guide number)
1/1 16 28
30 36
42 46
50 54
1/2 11.3
19.8 21.2
25.5 29.7
32.5 35.4
38.2
iiiHp
1/4 8 14
15 18
21 23
25 27
liiiiil m
1/8 5.7
9.9 10.6
12.7 14.8
16.3 17.7
19.1
W'mli.
S
W>>m
.
■
1/16 4
7
7.5 9
10.5 11.5
12.5 13.5
1/32
2.8 4.9
5.3 6.4 7.4
8.1
8.8 9.5
1/64 2
3.5 3.8
4.5 5.3
5.8 6.3
6.8
1/128
. . 'T '
■
1.4 2.5
2.7 3.2
3.7 4.1
4.4 4.8
* ^he 18mm coverage angle figures are for when the built-in wide panel is used.
For guide numbers based on feet instead of meters, perform the following calcu¬
lation: Guide No. (ft) = Guide No. (m) x 3.3
Battery Life (No. of Bursts) and Recycle Time
■
Power Supply
Battery life
(No. of bursts)
(approx.)
Recycle time (sec.)
Quick firing
(approx.)
Normal firing
■ (approx.)
Built-in
power
supplies
4 AA-size alkaline
120- 800
0.2- 2
0.2-12
4 AA-size Ni-Cd
50- 350
0.2-1.5
0.2- 6
External
Transistor Pack E with Ni-Cd Pack TP
350-2000 0.2- 1
0.2- 3
power
supplies
Transistor Pack E (4 alkaline C-cells)
400-2500
0.2-1.5
0.2- 5
Compact Battery Pack E (LR6/AM-3)
400-2500
0.2-1.5
0.2- 5
---11-— 1-—-J
In the battery life column, figures on the right indicate the number of bursts in A-
TTL mode, and figures on the left indicate the number of bursts in manual (1/11
mode. v
'
The number of bursts possible at the 1/2, 1/4, 1/8, 1/16, 1/32, 1/64 and 1/128
manual power settings, are greater than number of bursts possible at the full-
* Power
(171) settin9 by factors of 2, 4, 8, 10, 12, 15 and 18, respectively.
In the recycle time column, the left-hand values are the flash recycle times in A-
FTL mode, and the right-hand values are the flash recycle times in manual mode
at full (1/1) power.