Yes this is true, the Nikon cameras can have quite a variability in delay time from camera trigger to shutter opening when triggered remotely. I recall something like ~50ms variability and a average delay from external trigger to shutter of ~200ms for the D850, other bodies have different average delays. Don't think this is so when triggered on the camera (trigger button) though, the variability and average delay are much less.mjkzz wrote:I think there is something missing in your formula -- shutter lag and for some (most) cameras (I have at least). this shutter lag is variable, ie, it is NOT constant from shots to shots. For Nikon cameras, this behavior is even more pronounced.RDolz wrote:ADi, perfect !!
I did not know how to explain it without anyone feeling upset, ...
What camera do you use, ... in "theory" it should be feasible to use faster exposure speeds.
Only the total readout time + margin 1 + flash time + margin2.
Margin is a prudential time between the readout and the trigger of the flash, or between the end of the flash and the end of exposure of the first row.
Thus, both margins can be thousands, and the flash time at maximum powers I think is also of the order of one thousandth of a second (I have read that it is between 1/750 and 1/2500 according to the manufacturer), ...
Therefore for a readout of 1/15, flash of 1/750, margins of 2 milliseconds, we would have:
1/15 + margin1 + flash + margin2 =
1/15 + 2/1000 + 1/750 + 2/1000 = 0.072 s equivalent to 1/13.9 of second ...
For a flash of 1/2500, it is practically the same
This could allow photography with a soft ambient light, if the flash power is sufficient.
Best regards.
For my Sony A7III, in ES mode, it is, too, variable, but at lesser degree. So I always set delay to 1/2s with shutter speend at 1/2s, I have never missed a single shot yet (after 1000s of shots).
Best,