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How To's

Zeiss 15mm Hood Removal

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This isn’t a general interest post. It’s simply answering a request for some people who want to remove the hood from their Zeiss 15mm lenses so they can cut the petals off and use filter holders. Obvious disclaimer applies – doing this voids every kind of warranty, is probably a bad idea, and we don’t […]

How To's

A Tilted Element Demonstration

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One thing we preach here a lot is that just because a dropped lens looks fine on the outside doesn’t mean it is fine. The other thing we preach a lot is that a tiny difference in the centering, tilt or placement of a single element can have a dramatic effect on image quality. Aaron made […]

Equipment

The Care and Feeding of Your Tripod

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Being a good photographer, you have a tripod. Maybe two tripods. Maybe even a big, heavy duty one for your big lenses, a standard one for everyday use, and one of those small, cool ones that folds up like a road map and you can carry it in your back pocket. Wait, I just realized […]

How To's

Testing for a Decentered Lens: an Old Technique Gets a Makeover

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What is Decentering and What Does it Do? Strictly speaking, decentering would involve one or more of the lens elements being off of the central axis of the lens. This would prevent the curved surfaces of the lens from bending the light properly. In severe cases it could result in halos or ghosting. In most […]

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