Quick question - MLU AND timer possible, D800?

You can use them together

It is also nice that one is able to vary the delay dependent on the lens being used

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The Camera is only a tool, photography is deciding how to use it.
The most important piece of equipment in photography is the lens cap, if used incorrectly all your photo will be under exposed.
The hardest part about capturing wildlife is not the photographing portion; it’s getting them to sign a model release