I might be being a bit numb about reading the manual accurately, but I have not found a way of taking shots with the mirror locked up to reduce/eliminate shake due to the mirror flip. Does anyone know if this is possible on a D90 and if so: How you do it?
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From: gisle — 2009-12-14 10:57
There is no MLU on the Nikon D90 and some other Nikon DSLRs in the same “class”.
However, you can accomplish the same thing by setting a shutter delay after the mirror flips up. You select this in the Custom settings menu.
From: A.Lwin — 2010-04-19 20:24
On a D90 you could try to take the photo during live view mode since the Nikon live view mode uses the main CCD/CMOS instead of a secondary CCD like the Sony live view modes.