D90 mirror lock up work around?

Discussion in 'Nikon' started by damon_macleod, Feb 24, 2009.

  1. The D90 doesn’t have a mirror lock up function, but I read somewhere that it’s possible to set a 1 second delay that will counteract the mirror vibration. Unfortunately I can’t find any information on how to set this delay. Have I been led astray?
  2. Custom Setting d10 - Exposure Delay Mode
    Page 183 of the English manual.
  3. It's called "Exposure Delay Mode", Custom Setting d10, on page 183 of the manual.
    It's virtually the same thing as the self-timer firing off after 1 second, though only 2, 5, 10 and 20 sec. can actually be selected for the self-timer.
  4. Thanks! In your experience, is the exposure delay effective? Is it comparable to a real mirror lock up?
  5. ShunCheung

    ShunCheung Moderator

    A one-second delay should be more than sufficient for any vibration from mirror slap to die down. In fact, personally I prefer the 0.4 second on the D2X and D200, but apparently plenty of people prefer a slightly longer delay.
    The main issue for a long delay is that you start losing control of the precise moment the image is actually captured. That probably does not matter if you are inside a studio and have full control of the environment. For outdoor wildlife or flower macro type shots, 1 second can make a big difference. I wish Nikon would add user-selectable delays between 0.4 and 1 second.
  6. Well, outside of mirror lock up it's the best you can do. I was out shooting film the other day and had the camera set to a 2 sec. self-timer delay on a tripod. For some telephoto shots I could definitely see through the viewfinder that getting my hands off the camera after pushing the shutter release was making a difference.
  7. Not the same as self-timer. Self-timer only helps with vibration caused possibly by your finger pushing the shutter button and delays the mirror/shutter combined action, but does not help reduce any vibration caused by the mirror up movement.
    With the exposure delay mode mirror action is separated from shutter action by 1 second time delay, allowing mirror caused vibration to decay.
  8. Good to know. I was not aware of this function. Is it exclusive to the D90? Do you have to use the menus to toggle this mode on and off, or is there a physical button or dial that can enable it a la MLU mode on a D700?
    Thanks to Frank for pointing out the differences between "exposure delay mode" and the self-timer.
  9. ShunCheung

    ShunCheung Moderator

    This same feature is on the D100, D200, D300, D700, D2 and D3 families (and perhaps some others). The delay on the D2 and D200 was 0.4 second as I mentioned earlier but it is 1 second on the current models.
    On some older film bodies such as the FM/FE series, the self timer would trigger the mirror at the beginning of the self timer cycle so that you get the so called "pseudo mirror lock up."
  10. On the D80 the Exposure Delay Mode is Custom Setting 31 and is the same as the D200 with a 0.4 second delay.
  11. After i read your feedback, i had a try with my D90 and the results are definately better. Thanks to all for the tips.
  12. Thanks for this thread -- I was poring through the D90 manual last night looking for "mirror lock-up." This was exactly what I was looking for.
  13. Quick questions?: If you use the D90 exposure delay to cut down on vibrations will a finger press on the shutter have dampened out by the time the shutter fires or is it still a good idea to use the remote? Second, can you use the timer AND the exposure delay on the D90?
  14. ShunCheung

    ShunCheung Moderator

    The main source for vibation is the mirror slap, and that mainly affects shutter speeds around 1/15 sec. Therefore, one second should be more than sufficient for everything. Just make sure you press onto the shutter release button gentally.
  15. Hi Guys,
    I want to us my D90 for some time lapse sequnces,using an interval timer, so want to lock the mirror up to save wear, any ideas.

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