I have an Olympus OM-10 without a manual adapter. This camera was recently purchased off classified and light seals were replaced (by me). I am finding metering is inaccurate. This is what it is doing: 1) the actual shutter actuation itself seems to be fairly accurate 2) meter indication in the view finder is way off . when it should read 1/100th, the meter indicates somewhere around 1 second . if I move the ISO setting or aperture ring, it moves accordingly . if I play around, sometimes and rarely, it displays correct setting . if I take the lens off and move the aperture slider inside the mount, indication moves 3) it is NOT the battery. replacing them with brand new and correct ones did not resolve the issue Reading the repair manual, it seems, on this model, metering circuit and its sensor AND the actual shutter assembly are separate circuit. The actual shutter circuit has an independent sensor. This body is acting as if the metering sensor is not receiving enough light. I believe this is a CDS atop prism assembly. I know there IS a known issue with this camera where shutter actuates at slower speed than the indication. This is not the case. It is backwards. Any idea would be appreciated. It is not worth the cost to send it to CLA.