Category Archives: Lenses and Optics

Optical Tune Ups

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It’s not  falling that hurts, it’s the sudden stop at the end.    -Author Unkown     Understandably, people are concerned with whether a new lens they buy is functioning properly and optically within specifications. One thing I harp on is that we also need to watch our lenses over time. Bumps, drops, and normal [...]

Metabones Magic?

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A few days ago I learned about the Metabones Speed Booster. For both of you who haven’t heard yet, this is an adapter containing optical elements and electronic controls that allows you to mount Canon EF lenses to Sony NEX cameras (other versions are planned for other lenses and cameras). The quick summary is the [...]

Quick Resolution Tests on Two New 70-200s

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We got stock on two new 70-200mm lenses this week: the Nikon 70-200 f/4 VR and the Tamron 70-200 f/2.8 VC. I would have loved to do some side-by-side comparisons. They’re priced similarly and I expect a lot of Nikon shooters will be choosing between these two since both are quite a bit less expensive [...]

Scoping Out Digiscoping

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Digiscoping I’ve always been a bit fascinated by digiscoping. For those who are out of the loop, digiscoping involves taking images through a spotting scope rather than a camera lens. The advantages are obvious. A spotting scope provides magnification equivalent to a lens of 1,250 to 3,000mm. Who wouldn’t want that? Not to mention a [...]

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 [...]

Imatest Macro Results (With Apologies to the Nikon 105 VR Micro)

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A few months back we tested a number of Nikon lenses on the D800 cameras, hoping to determine which lenses could bring the absolute best resolution out of that camera’s 36-megapixel sensor. The results were interesting, and in a few cases surprising. More than a few Fanboys went ballistic over minutia, which is always entertaining. [...]