E TTL do i get a shutter delay

[spoolin_photography]

ello

ok guys i am used to useing the nikon TTL but now i am about to get a 20D will i expect a delay in the time from when i push the trigger to when the photo is taken with the E-TTL system??

Cheers
Shane

[scottbergerphoto]

There is no noticeable shutter delay when you use flash period, be it ETTL, Manual, etc. The delay will be the same as your camera without flash. I can say that without question for the G2, 10D and 1D Mark II.
regards,
Scott

[slin100]

The delay may not be perceptually noticeable, but there will be a delay imposed by the ETTL preflash. The question is, what is the delay? I've seen non-authoritative and inconclusive reports that it can range anywhere from a few tens of milliseconds up to a hundred milliseconds. The same reports also "claim" the the delay differs between cameras (e.g. longer on the G series, shorter on DSLRs).

I'm inclined to believe that the delay is probably not 100 ms. OTOH, I've lost track the number of times I've captured a particular person I know blinking when using my 550EX. Either that person is blinker or the delay from the preflash is long enough for the person to react by blinking.