Last summer I started experiencing shutter lag intermittently. Due to known issues with the shutter (though a little early at 12000 clicks), I sent it off to a local repair guru with a solid reputation...he's been repairing pro equipment for over 30 years in the Chicago area and he's repaired my film cameras in the past, so I trust him.
He could not find any problems and their are no errors logged on the camera. He could not reproduce the symptom. He performed a basic cleaning and service and sent it back.
I've tried a number of things to resolve the problem:
- Changed battery
- Tried various lenses (including a basic 50mm 2.5 prime)
- Put it on manual focus (still occurred in some cases)
- Turned off IS (where applicable)
- Master reset (painful)
- New CF card
- Remote shutter release (problem does not occur on remote release)
Honestly, the bizarre and inconsistent nature of the symptoms almost reads like a chip damaged by an ESD. But I have no experience with ESD damaged digital sensors. I have some experience with ESD damaged microprocessors for both servers and PC's as well as a microwave. For instance, when you press the 1 minute button on the microwave, sometimes it gives you a minute and sometimes it puts you in pizza mode. When pressing cancel, sometimes the light goes on and sometimes it cancels. Its caused by damaged pathways on the board.
Any thoughts/ideas? I've been thinking about upgrading to a FF 5DMKII, but I'm way ahead of schedule for that.
