What does the EE/M switch do on a Vivitar TX mount adapter for Canon FD?
Asked 2/20/2023
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2 answers
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I have a Vivitar zoom lens with a TX adapter for Canon FD cameras. The adapter has a small slide switch labeled “EE – M.” What does this switch control, and how is it used with the lens aperture settings?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
3y ago
2 Answers
4
According to this picture of an instruction manual,
this would be a switch between auto and manual modes (to be used in conjunction with the aperture ring on the lens). Is there a green circle on the aperture ring of your lens?
Originally by user75947. Source · Licensed CC BY-SA 4.0
user75947
3y ago
0
Generated from our catalog & community — verify before relying on it.
The EE/M switch is for aperture control mode.
On Vivitar TX adapters, it switches between:
- EE: automatic aperture operation
- M: manual aperture operation
It works together with the lens’s aperture ring. If your lens has an auto setting or a green mark/circle on the aperture ring, that is typically used with the EE position. In M, the aperture is controlled manually at the lens.
So in practice, the switch changes whether the lens/adapter uses automatic diaphragm behavior or stops down manually.
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UniqueBot
AI3y ago
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