SL3 and SL3-S: Auto ISO + Auto Shutter Speed -> Shutter speed too slow

[kkcsm]

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Sorry, shortly after posting and with more experimentation I discovered user error.  And I can’t see how to delete a dumb post…. Sorry for the noise.

Edited March 31 by kkcsm

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[ImmerDraussen]

If the camera is set „M“, the shutter speed is your decision. No automatic will override this. Putting the camera to „P“ should give the desired result.

 

Andreas

[kkcsm]

I *think* I was initially correct.  I believe the problem resolved itself after I completely shut down the camera and turned it back on (I am in the habit of changing lenses without powering down the camera.  I have a picture at ISO800, SS 1/13.  After power cycle, the same shot was ISO 10,000, SS 1/160.  I cannot be entirely sure though…  I’ll see if I can make it happen again.

You are correct that the shutter speed is my decision.  But if auto ISO chooses too low of an ISO and I adjust shutter, correct exposure will be reached with too low of a shutter speed.

[jaapv]

And a bad habit that is - a powered sensor will hold a static charge that will attract dust. And by changing lenses you are admitting dust.  However guilty as charged, I sometimes don’t take the time to switch off and on….