Canon 550 EX User Manual

Page 35

FE Lock

Check the flash exposure level in the
viewfinder, then take the picture.

• If the subject is too far away to obtain a correct flash exposure,

will blink in the

viewfinder. Either move closer to the subject or use a larger aperture (smaller f-
number) and try again.

• FE lock cannot be used if the 550EX is set to the M (Manual) flash mode. With the

EOS Elan IIE/50E/55 and EOS IX, the

icon blinks in the viewfinder to warn that FE

lock cannot be used in the M flash mode.

• The FE lock's preflash fires at about 1/32 output.
• With Type-A cameras other than the EOS-1D, 1V, and 3, the AE lock button functions

as an FE lock button when the 550EX is recharged and ready.

• If the subject is small, using FE lock might not make any difference.

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