Thanks for all the suggestions. I am still confused on the operation: will the self timer or electronic cable trigger the mirror to move more in advance of the shutter relative to using the regular shutter button?
As the self-timer counts down (let's say it is 8 sec) the mirror will flip up a few seconds before the shutter fires... thus reducing or eliminating vibration due to the action of the mirror. The vibration should be gone by the time the shutter fires.
Try it out... it's an old trick and a good one. I would be shocked it this didn't work on an N90S.
#7. "RE: Lack of mirror lock-up on N90s" | In response to Reply # 3
Thu 15-Aug-02 04:18 PM
Well , The F4 does not lock up the mirror while in timer mode , and this is really annoying in an , otherwise , excellent camera. Of course there is a mirror lock up facility on the F4 but then the meter is useless , since you have to dial the exposure yourself , and it has to be below 4 secs. This is why I feel better with my FE2 on tripod while shooting landscapes needing longish shutter speeds.
There are another 1 or 2 things I wished the F4 had , but I guess this is not the place to mentioned them
Eddy I use an MC20 remote lead, helps cut down vibration in conjunction with self timer, it does work. Dont forget the self timer dosnt work on B but if you use an MC 20 you can set an exposure up to 9hrs 59min 59 secs.