Auto ISO in Manual Mode. OLY m43 system

Started 6 months ago | Discussions thread
David Kieltyka
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Re: Auto ISO in Manual Mode. OLY m43 system
In reply to dpreviewreader, 6 months ago

dpreviewreader wrote:

This is a non-issue for those who shoot raw. Since exposure depends upon the f-stop and shutter speed only, shoot raw in manual mode, apply any exposure compensation by changing the shutter speed or f-stop and adjust the brightness during pp if the auto ISO selected is not what you want.

Exposure also depends on your ISO setting in RAW unless you shoot everything at base ISO and then push in post. I wouldn't recommend doing this. With recent Oly cameras, though, if you cap Auto ISO at 800 or so you should be okay "underexposing" and then pushing.

Also, in manual mode with Auto ISO changing Tv or Av just causes the camera to shift the ISO in response. You're stuck with the camera's desired EV unless you turn off Auto ISO. (You can of course also use AE Lock to force a different EV.) Note that you can get around this with lenses that don't talk to the camera, like the Voigtländers, by using shutter priority with Auto ISO. Since the camera can't control the lens aperture this is effectively manual mode with exposure comp. capability.

-Dave-

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