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dark current noise

Started Jan 5, 2016 | Discussions thread
RedOctobyr Regular Member • Posts: 298
Re: Home-made "slim" T-Ring adapter for Micro 4/3

RedOctobyr wrote:

I was surprised to see that, with even a 4-second exposure, using silent shutter, the camera apparently did a dark-frame subtraction anyhow, even though it was disabled, as far as I could tell.

When I set the shutter to anti-shock with mechanical shutter, the dark-frame subtraction didn't happen, and I could shoot again immediately after the exposure finished.

Is this how it works on other Olympus cameras, is this "normal"? Or did I just miss something?

I think I figured this out. While trying to do something else on the camera, I noticed a setting specifically for silent shutter Noise Reduction.

Go to Shooting Menu 2, Anti-Shock/Silent, then Noise Reduction (heart icon). It had been set to Auto. When I set it to Off, the automatic dark-frame subtraction in silent shutter mode stopped.

With silent shutter Noise Reduction set to Auto, a 4-second exposure in silent shutter mode would start with a mechanical shutter sound, and would include a 4-second dark frame subtraction at the end. This happened even with the "overall" Noise Reduction (Gear E) set to Off.

With silent shutter Noise Reduction set to Off, a 4-second exposure in silent shutter mode started silently, and did not include a dark frame subtraction. I could shoot again immediately.

I don't know why Noise Reduction settings are partially found in Gear E, and partially in Shooting Menu 2, but at least now I know how to change this

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