Modern Classic SLR Series : Canon EOS-1N Series AF SLR camera 540EZ Autofocus (AF) Speedlite - System Flash Model - Part II

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3. Main highlights and features of Canon 540EZ Flash System Item marked " " Newly added feature of 540EZ; Item marked "": Feature functionally improved from 430EZ

(1) Auto zoom flash with large full-power light output of GNo.29 - 54 (ISO 100.m) (2) Coverage of the angle of view of a super-wide-angle 0 20 turn lens using a built-in wide diffuser panel (3) Compatibility with focal lengths ranging from wide-angle 24 mm to medium-telephoto 105 mm, and quick auto zooming faster than 0.8 sec (at normal temperature) (4) A-TTL auto flash control, TTL auto flash control system When this flash unit is mounted on the EOS-1N / EOS-1N RS, 5-point focusing/ 3-point auto flash control photography can be performed. (5) The auto flash control exposure result can be checked by viewing the light control check lamp after shooting. (6) AF auxiliary light compatible with 5-point focusing is incorporated. (Effective distance: rn to m)

(7) Three types of powerful external power packs are available. The Laminate pack E, Transistor Pack E or Compact Battery Pack E can be selected according to the shooting environment and use.. (8) Rich selection of power sources and quick charge

Power source		Recycle Time (sec.)		No. of firings (times)
		Repeating Flash	Normal Flash
Built-in power source	AA-size dry batteries (LR6)	0.2 - approx. 2	0.2- 13	100- 700
	AA-size Ni-Cd batteries	0.2 - approx. 1.5	0.2- 7	45- 300
External power source	Laminated battery	-	0.2- 3	400- 2500
	C-size dry batteries (LR14)	-	0.2- 8	300 -2000
	Ni-Cd Pack TP	-	0.2- 3	250-1500
	Compact BP-E (LR6)	0.2 -approx. 1.5	0.2-5	400 -2500

(9) Auto flash exposure level and independent exposure compensation for flash photography can be performed in the range of ±3 stops in increments of 1/3 stops. * The auto flash exposure level of the flash can be compensated independently of the camera. This permits various expressions. * When this system is mounted on the EOS-1N / 831HS-RT or EOS5, the auto flash control exposure level can be compensated by operations from the body side.
(10) 8-step (I/ I to 1/128) manual firing and I to 100 Hz / 3 1 -step multi-firing control. The firing count (I to 100 times / 31 steps) can be set.
(11) Shoe lock (lock pin operated in connection with a clamping ring)
(12) Easy to read display using large-sized LCD (built-in uniform EL illumination function)
(13) First curtain sync or second curtain sync can be selected.
(14) Bounce is possible. * Upward: 60' to 90' Downward: 7* / Right: 60' to 90' / Left: 60* to 180' * Locking at the upward / downward or left/right 0' position and upward 90' position (The lock status can be released by pressing the unlock button.)
(15) Built-in SE function that turns off the power source automatically in 90 sec, The SE function can be canceled by the main switch.
(16) High-level flash lighting can be performed by using multi-flash photographic system accessories.
(17) Compatible with virtually ALL Canon EOS camera models

Guide Number: -

f-number	20mm	24mm	28mm	35mm	50mm	70mm	85mm	105mm
Guide Number	18	28	30	36	42	46	50	54

Various G.No during MANUAL burst (Lab)	20mm	24mm	28mm	35mm	50mm	70mm	85mm	105mm
1/1 (Full)	18	28	30	36	42	46	50	54
1/2	12.7	19.8	21.2	25.5	29.7	32.5	35.4	38.2
1/4	9	14	15	18	21	23	25	27
1/8	6.4	9.9	10.6	12.7	14.8	16.3	17.7	19.1
1/16	4.5	7	7.5	9	10.5	11.5	12.5	13.5
1/32	3.2	4.9	5.3	6.4	7.4	8.1	8.8	9.5
1/64	2.3	3.5	3.8	4.5	5.3	5.8	6.3	6.8
1/128	1.6	2.5	2.7	3.2	3.7	4.1	4.4	4.8

Illumination angle Zoom system:- By condenser lens fixed/inner zoom (internal flash head unit drive system) and built-in wide diffuser panel. Zoom methods (a) Auto zoom:- Automatically set with the camera switch turns ON, coupled with the focal length information from the lens. (b) Manual zoom:- The zoom position is switched in sequence by operating a push switch. (c) Wide diffuser panel:- When the built-in wide panel is set to MANUAL, the zoom position is automatically set to the 28 mm position to cover the angle of view of a 1E 20 mm lens.

Zoom stop positions:- Seven positions: 24 turn, 28 mm, 35 mm, 50 mm, 70 mm, 80 mm and 105 mm. When set to a bounce position in auto zoom mode, the zoom position is automatically set to the 50 mm position. Setting position display is via digital numeric display on LCD Zooming speed:- Approx. 0.8 sec (at normal temperature) Bounce a) Direction of bounce

Direction	Angle	Click stop position
Up	0°-90°	0°, 60°, 75°, 90°
Down	0°-7°	0°, 7°
Left	0°-180°	0°, 60° 75°, 90° 120° 150° 18°
Right	0°-90°	0° 60°, 75°, 90°

Bounce lock Locks at the upward/downward and left / right 0' positions, and at the upper 90' position
Preflash: -In A-TTL or bounce mode, the main flash head emits a preflash
Bounce display When set to a bounce position, the bounce mark is displayed on the display panel.

The Canon 540 EZ flash Control system

Firing modes:-

(1) Normal Flash Burst Situation (pilot lamp: Lights red when flash is readily to fire)
(2) Quick Firing (pilot lamp: Lights yellow-green when flash is ready to fire.) This mode keeps the recycle time at or below 2 seconds. Both the built-in power source and external power source can be used except in the following conditions. Quick firing inhibit conditions:- a) When the camera's film transport mode is set to continuous exposure mode. b) TTL auto flash control mode * When the camera is set to manual exposure mode; * When using the TTL hot shoe adapter; c) During manual flash at 1/1, 1/2

(3) Repeating/Multi-Firing flash The multi-firing function is activated when the X contact is turned ON in the charge complete status, performs multi-firing at the set frequency (1 to 100 Hz), and stops firing when the X contact goes OFF, at the end of the set firing count (1 to 100 times), or at the end of the charge complete status..When this mode is selected, the quantity of light is set to the initial value of 1/16 power, and can be changed by operating the up/down button. However, it cannot be set to 1/1 or 1/2. a) Settable frequency (31 steps) 1 - 20 Hz in I Hz steps; 25 - 50 Hz in 5 Hz steps; 60 to 100 Hz in 10 Hz steps. b) Settable firing count (31 steps) 1 - 20 times in 1-step increments; 25 - 50 times in 5-step increments, 60 - 100 times in 10-step increments. If the firing count is not set, a hyphen is displayed in the LCD panel. Continuous firing is performed when the X contact is turned ON. The firing is stopped in the following conditions. (i) X contact OFF; (ii) End of charge complete status; (iii) Firing limitation of " " " " times (X).

c) Limitations on combinations of firing frequency and firing count; at each combination, a firing count exceeding the values shown in the table shown here cannot be set. (d) Preflash For A-TTL distance information detection during bounce flash operation (At the normal position without bounce, the dedicated emission unit is used.) (e) Test flash- Test flash can be performed by the test flash button (which also functions as a pilot lamp). A-TTL or TTL mode: Full power Manual or multi-firing mode: Flash output according to the set power setting; Please Note:- Test flash is NOT possible when the camera's metering timer is ON.

Flash control aperture value setting

Camera exposure mode	AV setting	TV setting	EOS body metering	540EZ preflash	Synchronous shutter speed setting (EOS-1N)
Shutter-priority AE	Auto	Manual		-	Optional setting under 1/250 sec.
Aperture-priority	Manual	Auto	-	-	1/250 - 30 sec.
Program AE (full)	Auto	Auto			1/250 - 60 sec.
Manual	Manual	Manual	-	-	Manual setting of 1/250 sec. or lower

* The maximum synchronous shutter speed conforms to the X-sync time of the EOS body in use,

Exposure control modes:- (1) A-TTL auto flash control; (2) TTL auto flash control (when the camera is in manual mode); (3) Manual
Flash exposure control system:- TTL auto flash control by EOS body control and off-the-film reflection metering
Flash exposure check:- OK: After shooting, the flash exposure check lamp (green) turns on for about 2 seconds. NG: The above lamp does not turn on.
Flash exposure compensation (a) Auto Daylight fill-in flash and auto reduction control for high brightness controlled by each EOS body. (b) Manual compensation by operating the 540EZ Manual compensation in the range of ±3 stops in 1/3-stop increments (When the shooting mode of the camera is not in the full auto mode, the auto flash exposure level is compensated.) (c) Manual compensation by operating the EOS-1N or EOS5 Electronic dial operation on the body. Note:- When items (b) and (c) are simultaneously set, item (b) has priority over the (C).
Flash output coupling range (50mm/1.4 ISO 100):- (a) A-TTL normal firing: 0.5 to 30m; (b) A-TTL low-voltage firing: 0.5 to 7.5m (min) to 21m (max)
Coupling range display Display in the LCD panel.

The Display System used on the Canon 540EZ AF TTL flash

LCD display Due to sophistication in various combinations of camera/flash functions, LCD is used as the medium of display; it provides information relates to: - (1) Zoom position (A hyphen is displayed when the flash head is in a bounce position.) (2) Manual zoom mark (3) Flash aperture value (4) TTL auto flash mode (A-TTL, TTL) (5) TTL flash coupling distance range (numeric bar display) (6) Manual firing mode (7) Manual output level (8) Manual correct distance (numeric bar display) (9) Multi-firing mode (10) Multi-firing frequency (Hz) (11) Multi-firing frequency (12) Second curtain sync setting (13) Bounce mark (14) Catch light reflector setting (15) Flash exposure compensation mark (16) Hash exposure compensation value Note: - For the values of (5) and (9), the user can select between "m" and "ft" displays. The selection is made by operating a select switch in the battery holder.

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Charge complete display (a) Normal charge complete display: The red pilot lamp (LED) comes on. (Full charge - 1 step); (b) Quick charge complete display: The yellowish green pilot lamp (LED) comes on. (Full charge - 4 steps)
Display unit illumination Full-surface uniform transmission illumination (yellowish green) for the LCD panel is incorporated. The lamp comes on for 8 seconds when the illumination button is pressed. (When this button is pressed in the lamp ON status, the lamp goes out.)
Synchro timing Either first curtain sync or second curtain sync can be selected.
Flash duration Full power: 1.2ms or less; Quick firing: 2.3ms or less ("ms" denotes as millisecond)
Color temperature:- Equivalent to daylight-Film speed ISO 6 to 6400. Setting is not required because it is under the control of the camera. The flash coupling distance range is shifted in proportion to the film speed.
AF auxiliary light:- a) Light source Red super-high luminance LED (2 LEDs); b) Pattern:- Stripe compatible with 5-point focusing system (center: vertical, left/right: horizontal); c) distance range to m (in low-light conditions)
Power switch:- Three-step slide switch: OFF, ON and SE (Save Energy).
ON: Always ON without SE.
SE: When the switch is left in the ON status, the power is automatically turned off in about 90 seconds. As soon as *the SE function is activated, the LED goes out (the set rhode is stored in memory). The power is turned on again by pressing the shutter button of the camera to the first step or pressing the test flash button. (Compatible with flash photography when using the interval timer function of the Technical Back E.)
Power source :- (1) Built-in power source a)AA-size alkaline-manganese batteries LR6 (AM-3) x 4 - 6 V; AA-size Ni-Cd batteries can be used. * AA-size lithium batteries can be used.
(2) External power source a) AA-size alkaline-manganese batteries LR6 (AM-3) x 6 - 9 V b) Laminated battery (0210 type 315V); c) Battery magazine TP (C-size alkaline manganese dry battery; d) LR14 (AM-2) x 6 - 9 V); e) Ni-Cd pack TP (NR-SC Ni-Cd battery x 6 enclosed pack)
Connectors:- (1) Camera connector a) Fixed accessory shoe screw lock type with a lock screw tightening coupled lock pin The lock pin protrudes 1.6 mm by the spring force coupled with tightening. b) Synchro terminal: Direct -coupled type 6-pin contact; (2) External power source connector Dedicated 3-pin socket.
Dimensions:- 80 (W) x 138 (H) x 112 (D) mm / 3-1/8 (W) x 5-7/16 (H) x 4-7/16 (D) in
Weight: approx. 415 g / 14.5 oz without battery (when LR6 batteries are loaded, the weight increases by approx. 100 g / 3.5 oz.)

Functions when multi-flash accessories are used

When multi-flash accessories are used together, the functions of the main unit become as follows.

Canon AF TTL 540EZ Speedlite function	Canon EOS-1N / Canon EOS-1N RS
	Direct -coupled contacts and and off-camera are used.	TTL hot shoe adapter is used for multi-flash photography
A-TTL auto flash		X Note 1
TTL auto flash
Flash coupling range display		X
Flash exposure check indicator
540EZ flash compensation		Note 2
Manual Flash/ power selection
Multi-firing / condition setting
Second curtain sync.		X Note 3
Auto zoom		X
A-TTL infrared preflash		X
AF auxiliary light emission function		X
SE function when SE is selected

Note 1: 'When the 540EZ is used in A-TTL mode immediately before multi-flash is used, the display remains without change. Note 2: In the multi-flash state, the flash exposure compensation value of the 540EZ can be set but it does not function. Note 3: Though the second curtain sync mark can be set, first curtain sync mode is actually used. In the multi-flash photography state, flash exposure compensation can be performed by operating the EOS-1N/EOS-1N RS or Canon EOS 5 body.

Other information that relates to the Canon 540EZ

(a) Mode memory Even if the main switch is turned off, the current control mode and zoom position are stored in memory. When the battery is replaced in the main switch OFF state, the settings are continuously stored in memory for about I minute.
(b) When the 540EZ is used with the EOS-1 or EOS-1N, the aperture value display corresponds automatically to 1/2 step and 1/3 step displays.
(c) Combination of the 540EZ with a camera that is earlier than the EOS 630 This relates to a section mentioned earlier. Through there is no shoe lock pin fitting hole, the lock pin protrusion is absorbed by the spring and this permits mounting.
(d) Use of a commercially-available slave unit: Possible. However, it is recommended to confirm operation in combination with the actual unit.
(e) please NOTE: -When the 540EZ is mounted on the EOS-1N RS, the flash coupling distance range becomes 35% shorter than the EOS-IN because of the fixed pellicle mirror, but the coupling distance display on the display panel is automatically compensated.

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Flash Photography:- Index Page Part | 2 | 3 | 4 - Canon 540EZ site

Selective Canon TTL Flash Models:- 160E | 200E | 300EZ | 300TL | 420EZ | 430 EZ | 480EG | 540EZ | Macrolite | Other non-TTL Canon flash models
Useful Resources at Julian Loke site: - Instruction Manual(s (PDF) for Canon 420EX | 580EX AF-TTL Speedlites

Suggestive weblink:- Canon Flash Resources at Photonotes.org or Bob Atkin Flash FAQ section

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Background and Various Issues | The Basic Features & various Setup
Manual & Auto Focusing | Metering Systems | Exposure Control | Viewfinder Optical
System Flash Photography (with Speedlite 540EZ extension & Selective info on Canon TTL Flash Models:-160E | 200E | 300EZ | 300TL | 420EZ | 430 EZ | 480EG | MacroLites | Other non-TTL Canon flash model

Reliability Issues:- Body Chassis | Shutter Unit | Electronic Circuitry | Film Transport & film handling Secondary Functions:- Custom Function Part One | Part Two | System Accessories:- Film Back Options - instruction for Command Back E1 | Macro/Close Up Part one | Part two and Part III Flash for Macro-Photography | Power Sources -BP-E1 | PDB-E1 | Focusing Screens | Remote Control with Wireless Remote Set LC-3 | System compatibility

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