Compact lens hood for Sigma 30mm f/2.8

[lecturedoodle]

46mm to 37mm step-down ring + 37mm rubber lens hood (minus the rubber lens hood)

In pictures:

Bare lens:

Plus 46mm-37mm step-down ring:

Plus 37mm rubber-lens-hood-minus-the-rubber-lens-hood:

Plus 37mm lens cap:

This lens hood setup was inspired by this blog post.

I swap this lens hood onto my Panasonic 20mm when I use my GH2.

PS: Just found out a minute ago that the blogger configured a similar lens hood for his m43-mount Sigma 30mm.