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Which (less obvious) settings affect shutter lag?

Started Jul 4, 2013 | Discussions thread
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Erm0 New Member • Posts: 9
Which (less obvious) settings affect shutter lag?

Guys, I must be missing something, perhaps you can help me

I am trying to synchronize four DSLR cameras using Camera Axe with Multi Flash Plus - Canon 550D, two Canon 600d's and a Nikon D7100.

My crude way of measuring sync is to shoot digital stopwatch.

All cameras have zoom lenses set to Manual Focus and are shooting identical settings in Manual Mode.

Now, the old Canon 550D and Nikon D7100 stay consistent (Canon being slower by 129ms). There can be 1-2ms variation (temperature, battery power level probably affect that), but other than this micro variation, they stay consistent.

Sadly, for some reason, the 600D's sometimes synch with the 550D, but sometimes beat it by 42-43ms. 95% of the time they both stay in sync with 550D or they both beat it by this margin, with only a few occasions where one 600D was in synch while the other one was faster.

I dug deep in camera menus, disabled most setting that should not matter in MF Manual mode anyway: set spot metering, forced use of central focus point instead of auto selection, disabled noise reduction, any and all image adjustment settings (like peripheral brightness correction, red-eye reduction etc.) and yet the dreaded 43ms variation still happens from time to time....

What am I missing?

Cheers,

Andrew

Canon EOS 550D (EOS Rebel T2i / EOS Kiss X4) Canon EOS 600D (EOS Rebel T3i / EOS Kiss X5) Nikon D7100
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