Question about Nikon D300 Body Only Digital Camera

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Nikon camera D300 mirror up/down shutter permanently up

I have a Nikon camera D300 the mirror up/down stays up and this makes it difficult to see thru the view finder for good shot to be taken. Once in a while after so many trial shots it may come down i have two other Nikon cameras with similar problem, i'm a technician i've opened it up already, What can i do to resolve this problem. Thanks

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Please check whether the mode dial is on 'Mup' or 'Lv'. If it is, then the camera is on mirror lock-up position (Mup) or LiveView mode (Lv). Mup is mirror lock-up and Lv is LiveView. It could be in Lv mode if you can see the image on the LCD, but not through the viewfinder. If it is on Mup mode, both the viewfinder and the LCD will be blank. If any of these is selected, pressing down the mode dial lock, rotate the dial to 'S' mode.

Posted on Aug 26, 2010

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1 Answer

I have a D300...Mirror locks up 100% time and will not shoot in focused shots..BUT in Live View..will shoot perfect. Had serviced..shutter replaced of 12/09...but problem started back up...Shoot 10...


@samanthas636
It's the aperture lever that has to be replaced and NIKON will do it at no cost to you.I just got mine back from NIKON's Melville Repair Center.They are great because they have backed their product and their service and people who work their are excellent!Kudos to NIKON!!!!

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Hi jandklandry, Sounds as though the cushion the mirror hits on the up swing is tacky thus holding the mirror up. Maybe you can yourself fix it however, I would suggest sending it to Nikon for a complete CLA (Clean Lube Adjust). You have a nice camera allow Nikon to do it proud.

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D300 shutter/mirror sound sloppy or not crisp I got my sensor cleaned and after I got my body back I noticed that the shutter and or mirror sound too loud or sloppy. It used to sound quite crisp and I...


As long as it works, I wouldn't spend too much time worrying about it. In the future, learn to clean the sensor yourself. It's not difficult when you have the proper supplies. Just Google the words "how to clean a DSLR sensor" and you will find sites with pictures to teach you.

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What is the shutter lag for a nikon d300


If you've pre-focussed by pressing the shutter button half-way and heard the beep, there is no shutter lag.

Apr 10, 2010 | Nikon D300 Digital Camera

1 Answer

Shutter drag problems


Check to see if somehow the "noise reduction" setting is on. This in effect takes two separate exposures on each shutter release, so it (sometimes) doubles the time the mirror is up. I'm not sure where it is in the menus on a D300.

Also, just a terminology point, but the "shutter" in this camera is a combination of the mirror (what we usually call the shutter) and the electronics which samples the sensor for a limited time. It's a little like the mechanical shutter on a film camera that was behind the mirror....back in the day when they made them from titanium.

The "so what" of this is that even if it sounds like it's not releasing as fast as it used to, the exposure can still be accurate if the electronics are sampling correctly. It's only when moving to slow exposures that the mirror speed/up time makes a difference.

Jul 15, 2009 | Nikon D300 Body Only Digital Camera

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are you using mirror lock-up or live-view feature?

Jun 02, 2009 | Nikon D300 Body Only Digital Camera

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Nikon D300 camera body shutter doesn't always work


Perhaps it is a focusing problem- try it on manual focus setting to see if the problem still persists...

May 05, 2009 | Nikon D300 Digital Camera

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D300 shutter only closes at about 1/20 sec


lawsuit, take them to small claim court, Nikon will settle...

Feb 21, 2009 | Nikon D300 Body Only Digital Camera

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NIKON D300


This should make no difference the way the camera performs. I believe that it is the buffer for shooting in burst mode. Is it on all the time?

It should just flash every time when you half depress the shutter.

Hope this helps.

Drew

Sep 22, 2008 | Nikon D300 Body Only Digital Camera

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