New Sigma 50-500mm Lens Hood Tube? (1 Viewer)

YellowBudgie said:

Hi All,

My Sigma 50-500mm lens came with the standard lens hood and what looks like a plastic extension tube. The tube fits the lens hood and lens. I was just curious what this extension tube is for.

Thanks,

Dana

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seaspirit said:

User guide that came with the lens?

I recall something about the hood extension being used when the lens is mounted on a FX or DX camera, while it stays off in the other case.

Ulli

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