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| Speedlite 540EZ | | |
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| | | Top-of-the range in the EZ-series, and worth considering if you have a type B camera (and are unlikely ti upgrade to a type A camera in the near future). A-TTL flash mode. Guide number of 54 (ISO 100m) at 105mm zoom head setting. Coverage down to 18mm using built-in diffuser panel. Tilt and swivel head. EOS magazine, December 2003, page 38 Type: clip-on type automatic flash unit with direct-coupled contacts (including AF auxiliary light corresponding to 5 focusing points, A-TTL pre-flash, auto zoom and bounce functions)
Flash duration: 1.2ms or less during normal firing; 2.3 ms or less during quick firing.
Coverage angle:
• auto zoom mode: automatically set according to focal length of the lens in use (settings: 24, 28, 35, 50, 70, 80, 105)
• manual zoom mode: manually set by pressing the zoom button
• wide panel: flash coverage for super-wide-angle lenses down to 18mm is possible by covering the flash head with built-in wide panel
Flash modes:
• normal firing
• quick firing
• stroboscopic flash: stroboscopic frequency and no. of bursts each settable in 31 steps
• pre-flash: for measuring A-TTL distance information
• test firing: by pressing the test firing button
Flash head positions: | | |
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Direction | Maximum rotation angle | Click stops | Up | 90° | 0°, 60°, 75°, 90° | Left | 180° | 0°, 60°, 75°, 90°, 120°, 150°, 180° | Right | 90° | 0°, 60°, 75°, 90° | Down | 7° | 0°, 7° |
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Exposure control modes: A-TTL program automatic flash, TTL program automatic flash, manual
Flash metering system: TTL automatic flash metering of light reflected off the film plane
Flash exposure compensation:
• automatic flash output reduction control provided in daylight fill-in flash situations
• manual compensation can be set on the flash within a range of ± stops in 1/3-stop increments. (possible in all shooting modes except fully-automatic shooting modes.)
• with some EOS models, flash exposure compensation is possible from the camera side by turning the main dial
Flash coupling range (50mm f1.4, ISO 100): A-TTL normal firing: 0.5~30m / 1.7~99ft, quick firing: 0.5~7.5m / 1.7~25ft (min) to 0.5~21m / 1.7~69.3ft (max.)
Flash change completion indicators: when the ready lamp lights red, normal firing is possible; when the ready lamp lights green, quick firing is possible
Auxiliary light & effective distance range: corresponds to 5 focusing points. Center: approx. 0.5~15m / 1.7~49.5ft (in dark situations); left/right: approx. 0.7~6m / 2.3~19.8ft (in dark situations)
Power supplies:
Built-in power supply:
• four AA-size alkaline-maganese batteries (LR6/AM-3)
• four AA-size Ni-Cd batteries (KR15/51)
• four AA-size lithium batteries
External power supplies:
• six AA-size alkaline-maganese batteries (LR6/AM-3)
• battery magazine TP (holds six C-size alkaline-maganese batteries (LR14/AM-2)
• Ni-Cd pack TP
Save energy function: when the main switch is set to the SE position, the power automatically turns off after 90 seconds of inactivity
Mode memory: The 540EZ automatically memorises 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
Weight: 405g (main unit only)
Guide numbers (ISO 100m): | |
Covergae angle (mm) | 18 | 21 | 28 | 35 | 50 | 70 | 80 | 105 | Normal (full power) firing (G-No) | 16 | 28 | 30 | 36 | 42 | 46 | 50 | 54 | Quick firing | Same as manual firing at 1/2-1/16 output levels | 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 | 1/4 | 8 | 14 | 15 | 18 | 21 | 23 | 25 | 27 | 1/8 | 5.7 | 9.9 | 10.6 | 12.7 | 14.8 | 16.3 | 17.7 | 19.1 | 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 | 1.4 | 2.5 | 2.7 | 3.2 | 3.7 | 4.1 | 4.4 | 4.8 |
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* The 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 calculation: 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 power supplies | Transistor pack E with Ni-Cd pack TP | 350~2000 | 0.2~1 | 0.2~3 | 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 |
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* 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 (1/1) mode.
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 (1/1) setting 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-TTL mode, and the right-hand values are the flash cycle times in manual mode at full (1/1) power. | |
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