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Old 16-07-2011, 11:00 AM
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rcheshire (Rowland)
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Remote mirror lock-up?

I recently bought an intervalometer, a cheapy, and find that mirror lock-up isn't handled well at all. If taking short exposures mirror lock-up is treated as an exposure. If you set 40 exposures you get 20 - and who wants to wait 5 minutes between exposures when doing AP. Looking at the controls the canon equivalent does the same - there is no first push second push facility as with the manual version.

Am I missing something. Looking at the instructions for this device there is no mention of mirror lock-up. Is their a remote that handles mirror lock-up properly?
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Old 16-07-2011, 11:40 AM
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No Mate you are not missing anything, mirror lock up wont happen in long exposures, I have been imaging for a while and there is no way around it.

Leon
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Old 16-07-2011, 12:05 PM
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The D7000 has mirror lockup in conjunction with its interval timer shooting.
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Old 17-07-2011, 11:22 AM
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rcheshire (Rowland)
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OK so I'm not completely mad. Will have to find a way around that.
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Old 17-07-2011, 03:54 PM
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I ask this, what is the point of mirror lock up for long exposures anyway.

Leon
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Old 17-07-2011, 04:30 PM
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Octane (Humayun)
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To avoid shaking. It made a huge difference for me when I was imaging at 2m focal length.

H
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Old 17-07-2011, 06:30 PM
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I guess at short focal lengths it probably doesn't matter, but it would be nice to have the option.
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Old 18-07-2011, 01:14 PM
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Yea H I know that, but we are talking wide field here, don't get technical

Leon
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Old 18-07-2011, 02:01 PM
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I guess it still helps, even if just a teeny little bit with short focal lengths. I just carried the same settings over to lenses/reflectors in DSLR Focus (hi, Chris!)

H
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Old 18-07-2011, 06:51 PM
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OK guys. Let me put it another way. There is no reason not to expect to use the equipment to its fullest extent - one day I might want to do deep sky.
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Old 19-07-2011, 12:58 PM
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You probably will Rowland, but trust me, you have no need for it doing wide field, the vibes that a shutter will cause on a 50-70mm lens is just not noticeable, regardless of what the experts say.

Leon
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Old 19-07-2011, 01:50 PM
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Leon, if you were referring to me, I'm not an expert, by any stretch.

To clarify, I was just offering some help which was beneficial for me at 180-300mm. It was also a habit carried over from long focal length imaging.

Of course, you're absolutely right; at 50-70mm focal length, you'd be very hard-pressed to notice any effects. Having said that, I really can't see the harm in enabling it.



H

Last edited by Octane; 19-07-2011 at 04:14 PM.
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Old 19-07-2011, 03:14 PM
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On bright objects at 900-1200mm + focal lengths I found that mirror lockup exposures gave me a much crisper image with my 30D.
I am no expert though.
http://photo.net/photo/nature/mlu5.jpg
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Old 19-07-2011, 07:17 PM
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Well.. I'm definitely no expert, but appreciate the feedback. Agreed, Leon, and a timer will take a lot of the work out of it. Still my question remains unanswered - is there a remote that does shutter lock-up properly?
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Old 19-07-2011, 09:25 PM
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Ok, I believe this does (see point 5 ). I have it and am trying it out.
http://www.ideiki.com/astro/Features.aspx
Quote:
Originally Posted by rcheshire View Post
Well.. I'm definitely no expert, but appreciate the feedback. Agreed, Leon, and a timer will take a lot of the work out of it. Still my question remains unanswered - is there a remote that does shutter lock-up properly?
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