Does using 5 F.P.S. as opposed to single shot affect shutter life?

I'm just curious if anyone ever looked into this. I've got a 20D with about 8000 shots on it now, probably 97 to 98% of them on single shot. At this rate I'll probably see 8 or 9 years life out of the shutter from what I've seen. When I've seen threads about the shutter letting go after 60 to 70,000 cycles I've always been interested in how often they were hammered at 5 F.P.S. I used to (back in manual focus days) have a F1N with a motor drive that did 8 FPS but I think the bigger problem there was the film winding mechanism letting go. Just food for thought, any opinions?

5 fps will add up the actuation faster than single shot but there is no reason that a single actuation would be less damaging than a rapid sequence.

JeffreyG wrote in post #4121495
5 fps will add up the actuation faster than single shot but there is no reason that a single actuation would be less damaging than a rapid sequence.

The law of physics dictates that rapid movement and contact between two surfaces may generally produce heat. Now, will this "heat" affect the longevity of the shutter? That may be a question for a mechanical engineer.
:p

I'm thinking that in single shot mode, the heat (if any) would have time to dissipate before the next shot.

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1+1=2 5+5=10 so yes. 89,000+ and still strong in one year.

You are in luck, I am a mechanical engineer. From what I know of the mechanism of the shutter the heating effect is going to be pretty small at something as slow as 5 Hz.

The shutter itself is just not a high friction / high energy consuming device....the size and life of the onboard battery (which also supports the processor and drives AF and IS motors) support the idea that the total power drain is low.

Also, the sustained drain in shutter cleaning mode suggests the shutter power draw is not to overcome friction.

All in all I would not expect a wear rate difference at 8 Hz, 6.5 Hz, 5 Hz, 3 Hz or once per day.

just look at that woman that took 104k shots in a month with a mkiii. in order to do that you need to be shooting 10fps for a good portion of the time, and if there's any difference between single shot and burst, that is where you would see it...

If it increases your total number of actuations it might.

However, the shutter moves at the same speed whether it is in one-shot or multi-shot mode, so that, by itself, will not make a difference.