delay when using external flash


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i_r_i_a

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Jan 28, 2002
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#1
i just tried the canon speedlite 420ex with my canon pro 90is and it does compensate the pro 90is under low light condition. however i find that there is a delay (probably 0.5s) after you fully press the shutter button. why? it is normal to digital cameras when using external flash? i think this is not good, i ended up a lot of waste shots when taking moving objects or people.

:( :( :(
 

#2
Originally posted by i_r_i_a
i just tried the canon speedlite 420ex with my canon pro 90is and it does compensate the pro 90is under low light condition. however i find that there is a delay (probably 0.5s) after you fully press the shutter button. why? it is normal to digital cameras when using external flash? i think this is not good, i ended up a lot of waste shots when taking moving objects or people.

:( :( :(
That's probably the usual focus/shutter lag. Or could be red eye reduction in action.

Regards
CK
 

StreetShooter

Senior Member
Jan 17, 2002
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Katong
streetshooter.clubsnap.org
#3
I think it's E-TTL at work. I remember reading that there is a noticeable lag in the Pro90 between the pre-flash and the actual exposure.

iria: is there an immediate pre-flash, followed by a lag before the shutter fires, together with the flash a second time?
 

i_r_i_a

New Member
Jan 28, 2002
83
0
0
Singapore
#4
Originally posted by StreetShooter
I think it's E-TTL at work. I remember reading that there is a noticeable lag in the Pro90 between the pre-flash and the actual exposure.

iria: is there an immediate pre-flash, followed by a lag before the shutter fires, together with the flash a second time?
yup, there is a pre-flash and follow by a second flash with the shutter fires under program, shutter-priority and aperture-priority mode. but i think there is no pre-flash under manual mode.
 

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