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Tamron 17-70 Stopped Changing Aperture

Started 2 months ago | Questions thread
miles500
miles500 Senior Member • Posts: 1,215
Re: Tamron 17-70 Stopped Changing Aperture

Using the front command dial, if one moves one notch beyond f22, it changes to P mode and aperture and shutter indicators turn white, but only activate on half press of the shutter.

Sometimes this has happened by accident and I have puzzled why I was in P mode rather than my usual A mode.

When one activates P mode in this way, there seems to be no way of changing the aperture.  The manual refers to lenses without an aperture and sets to change the button setting to Auto. My camera is already in this setting , so it makes no difference.

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Miles500

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