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My olympus OM 20 shutter mirror is stuck in the half up position and I cannot advance a frame. I have no button cell in the camera and wondered if the shutter depends on this to operate, or is it a dirty shutter magnet as answered by Obertelli

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Posted on Jan 02, 2017

Obertelli
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SOURCE: Olympus OM-4 stuck shutter

This is very common on many OM SLRs and is caused by dirty shutter magnets. If you look on the web you can find details on how to do this yourself, but as the OM-4 is top of the line I'd highly recommend getting it done professionally as part of a CLA (clean lubricate adjust) service. Last time I had it done in the UK it cost about £80 and when I had it done to my OM-2SP in the USA last year it cost just under $100.

Posted on Jul 26, 2009

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Film was in camera, frame 18. Batteries had failed at frame 17, had to depress "B Lock" button" and set shutter to 60 to release shutter. Replaced batteries with fresh batteries, battery...


This camera is somewhere between fifteen and thirty years old. It is highly unlikely that spares would be available, and it would be extremely expensive to have it repaired in any case, most artificers familiar with the internal layout having probably retired years ago. Maybe the camera should be retired too ?

Apr 16, 2017 | Olympus OM-4TI 35mm SLR Camera

2 Answers

I removed my lens and now when i fix it back, the shutter gets stuck in the mirror up position. when i remove the lens again, the mirror swings back without any problem.


Sorry, but if you have no access to other lenses then there isn't any definite way to isolate where the fault is. New batteries aren't the answer as on your model they only power the light meter.

It's very likely to be a lens fault, especially if using either of the two lenses which Cosina usually supplied (the OM2000 is actually a rebadged Cosina with an OM mount and OM viewfinder surround) but that's just a best guess based upon experience. The Cosina lenses have an OM mount and badging, but they are very cheaply made and tend to fall apart. The tiny lens stop screw is a common loss to almost all OM lens models and it prevents the lens from being turned too far when mounting it onto the body. Without the screw, the lens only has to be a tiny bit over-rotated to cause faults similar to yours.

If you hold the lens and look at the mounting with the top of the lens pointing up at the 12 o'clock position, then the screw in question should be just clockwise of the bottom bayonet lug at about the 6:30 position. It's about 1.2mm in diameter and stands proud about 0.8mm. If there's a hole there then the screw has fallen out. Replacing the screw is awkward as the Cosina lenses use screws which are not interchangeable with "real" OM mount lenses, but it only acts as a peg so it's often possible to replace it by epoxy gluing in a short peg of bronze or steel. Temporarily glue the peg before final fixing though as it may need trimming to get it just right. The Cosina lenses also tend to shed screws internally causing either the aperture coupling lever or the stop down lever to be out of their correct positions.

Good luck, and please take a moment to rate my reply.

Sep 15, 2010 | Olympus OM-2000 35mm SLR Camera

1 Answer

This is for you camera experts!!! I have an Olympus camera that belonged to my father. The only numbers on it are OM-1n. it is pre digital. I would like to find out more about this camera and possibly...


You can download a manual for the OM-1 from
http://butkus.org/chinon/olympus/olympus_om-1/olympus_om-1.htm

The OM-1MD is the same camera as the OM-1 with the added provision for taking a motor drive to advance the film automatically.

The OM-1n is the same as the OM-1MD with a redesigned film advance lever, a flash ready/sufficient flash LED in the viewfinder, and automatic X-sync regardless of the position of the FP/X switch, when it is used with a T-series flash unit mounted on Flash Shoe 4.

Aug 25, 2010 | Olympus Photography

1 Answer

Cannot take picture, no film advance, new battery


The shutter could be stuck or the mirror could be stuck. (Guessing you have an SLR.)
The film advancing is normal; means it is cocked and ready to go but something is stuck.

Take off the lens and see if anything is keeping the mirrors/shutters from returning.

Oct 23, 2009 | Canon EOS-AE-1 35mm SLR Camera

2 Answers

Olympus OM-4 stuck shutter


This is very common on many OM SLRs and is caused by dirty shutter magnets. If you look on the web you can find details on how to do this yourself, but as the OM-4 is top of the line I'd highly recommend getting it done professionally as part of a CLA (clean lubricate adjust) service. Last time I had it done in the UK it cost about £80 and when I had it done to my OM-2SP in the USA last year it cost just under $100.

Jul 24, 2009 | Olympus Photography

1 Answer

How to KNOW the light is right 4 an Olympus OM20 Manual camera?


OM-20 was basically a upgraded OM-10 with the manual adapter built in and a number of other refinements.

The viewfinder has LED's to show the shutter speed recommended by the camera's lightmeter for the ISO and aperture selected. It also has an exposure compensation indicator (the +/- symbol) and an indicator for flash ready which doubles up as a post-exposure flash confirmation. There is also the indicator lamp to show manual mode has been selected. OM-10 lacks the manual mode lamp and the +/- indicator.

Like the OM-10, the OM-20 is primarily an aperture priority automatic camera. In this mode you set the ISO film speed, choose which aperture you wish to use (with the ability to use the lens depth of field preview button) and then the camera selects the correct shutter speed. The +/- exposure compensation control allows the user to tell the camera to modify the recommended shutter speed by up to two stops either way.

In manual mode, there is no manual metering. The light meter behaves exactly as it does in aperture priority mode and the viewfinder shows the recommended shutter speed and not the manually selected one. Correct metering is therefore a case of adjusting the aperture first, and then choosing the correct shutter speed indicated in the viewfinder. If the user then decides to select a different shutter speed, then the aperture ring must be adjusted to maintain the correct exposure. For example the aperture is set to f8 and the camera recommends 1/60th of a second. The user decides that a faster shutter speed is required and chooses 1/250th, but the viewfinder remains showing 1/60th. In order to keep the same exposure value the user must open the aperture by two full stops to f4. The camera's light meter will detect the new aperture setting and providing the light on the object is unchanged the viewfinder shutter speed display should now show 1/250th as well to confirm the correct adjustment. Alternatively, the user can choose the shutter speed first by looking at what has been set on the control ring (or by turning the ring to the end of its travel and then counting the clicks from there as all experienced OM users do) and then turning the aperture ring until the shutter speed shown in the viewfinder matches what's been manually set.

It all sounds clumsy and complex but is done far more quickly than I've taken to type this and becomes second nature.

Aperture priority metering is selected on the camera by choosing AUTO on the mode selecter. In this mode the shutter speed ring has no effect and the viewfinder always displays the automatically selected shutter speed.

May 09, 2009 | Olympus OM-2000 35mm SLR Camera

1 Answer

Shutter release and film and advance not working on Olympus OM-N1


for shuter ,the spring ,or mirror lock wornout,rebts in shuter may wornout,for film advance lever cheek for rewind buton on botm

Apr 15, 2009 | Photography

1 Answer

Mirror is stuck in "up" position and film will not advance


Normally, stuck mirror is due to weak batteries with a elcetromagnetic shutter like the Ricoh. Try with brand new silver oxides and see if it helps!

Feb 21, 2009 | Ricoh XR-10M 35mm SLR Camera

2 Answers

SLR Camera


You don't say whether ou've tried using the reset button, which unlocks the mirror after lock up. As you look at the camera face on (shutter top left, rewind arm top right) then its about at 5pm on the lens mount. Whilst pressing that down, rotate the manual speeds band (found on the lens mount on the body) round to B, which should unlock the mirror.
If it does, it should work normally with new batteries in.

Aug 15, 2008 | Olympus OM-4TI 35mm SLR Camera

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