Dave,
The Auto Extension tubes (at least my 7 & 14) do not have depth of field (DOF)
preveiw buttons on them, just the bayonet release button. To check DOF just use
the DOF button on the lens itself which should work fine. Thats what I do with
all my lenses.
Jim Couch
DAVDOU9211@xxxxxxx wrote:
> I recently acquired a 14mm Auto Extension Tube. Today I set out to use it
> for the first time. Depth of Field Preview will not work on the 100mm 2.8 or
> 35mm 2.8. I haven't tried other lenses. The aperture does shut down when
> the shutter fires which indicates that that connection between the body,
> extension tube, lens is working. Am I missing something, or is it not
> possible to get depth of field preview with the extension tube.
>
> Dave Dougherty
>
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