Quote:
Originally Posted by Plossl68
Hi Peter,
Love the image.
Just on your plastic wedges, I don’t know about Sigmas, but with my Canon lenses, when I want to stop them down to use on an Astro camera, I pop them on my dslr, stop them down and then remove them without turning the camera off and voila, they hold whichever f-stop they were last set at. Yes, it’s a bit finicky if you want to try multiple f-stops, but no need for wedges.
Cheers,
Paul
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There's a spring in the mechanism for the Sigma Nikon lenses, which makes the aperture always jump back to as small as possible when the lens isn't installed. The same is true for Nikon lenses, for that matter
