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View Full Version : Mirror Lockup, Tripods, And Fast Shutterspeeds


68lbs
21-07-2008, 15:39
Following on from a moon thread here (http://www.talkphotography.co.uk/forums/showthread.php?t=73223), I feel myself requiring more knowledge again...

Why, if you are shooting something at 1/1000 sec would you need mirror lockup and a tripod? I thought at that sort of speed you'd have to be pretty heavy fisted to blur the pic. And why does the fact the moon is so far away make a difference. I understand that longer focal length, the more pronounced camera shake is, but don't quite get this comment.

4hero
21-07-2008, 15:47
I think the combination of all the above help you get a fairly decent shot of the moon. I've tried out various methods, and the setup you mention gives me my best results.

-RV-
21-07-2008, 16:27
Mirror lock up is used to reduce camera shake when used on a tripod.

When you press the shutter release it moves the mirror up, pauses, and then opens & closes the shutter. The delay between the mirror being moved and the shutter eliminates any chance of movement due to the mirror moving.

This may sound odd, but I would think the quicker the shutter speed is 1/1000 (for example) then the more effect shake could have compared to a long shutter speed say of say 1 second, as it has less time to capture the image.

jerry12953
21-07-2008, 17:22
With a long exposure it is possible to see the movement of the moon, but I can't see why 1/1000th should be necessary. It doesn't move that fast...

Otherwise I would have thought a tripod would do the trick.

Mind you, I don't think I've ever tried it myself ....;)

mbscad
22-07-2008, 22:37
I don't use mirror lockup but I do use a sturdy tripod and a remote release.
My photos are usually bracketed at 1/250 at iso200 on a 10D.

pauld
22-07-2008, 22:46
I thought mirror lock up was best used in that shaky range especially below 1/15 to about 1/2 but then again that is for macro. At 1/1000th would it be quick enough to have an effect - I do not think so but could be corrected...:shrug:

Splog
22-07-2008, 23:06
TBH.. I would use a tripod and slower shutter speed around 1/250 with low ISO and mirror lock up :) but at 1/1000 I really can't see the point of locking up the mirror?

if hand holding, you won't see anything with the mirror up anyway so why bother :shrug:

HTH.....