Points in Focus Photography

Building a Hyperbolic Resolution Wedge in Illustrator

In another article I described and made available my camera acclimation target. In the process of building that I ended up having to sit down and build from scratch what I’ve frequently seen described as a hyperbolic resolution test wedge. If you’ve ever used an ISO 12233 resolution chart, or looked at the resolution charts […]

Performance Aspects of Exporting Video with Premiere Pro CS6

The question has come up a couple of times in my article on enabling CUDA support in Premiere Pro regarding why exports still take so long even with the GPU enabled. The reality is that while Premiere Pro does use the GPU for rendering exports, the process is slightly different and the results can be dominated […]

Reflex Lenses and Doughnut Bokeh

Reflex lenses, or more properly catadioptric lenses, have long posed photographers with the possibility of a long telephoto lens at a fraction of the cost of the standard refractive lenses. A 500mm f/8 reflex lens for $200 or less compared to the $10,000 for a 500mm f/4 refractive lens. They’re simpler, manual focus, no iris, […]

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