Technical Discussions

How Autofocus (Often) Works


Clarke’s Law: Any sufficiently advanced technology is indistinguishable from magic. Arthur C. Clarke Clark’s Law: Any sufficiently advanced cluelessness is indistinguishable from malice. J. Porter Clark My Apologies Nothing in online forums demonstrates the two laws above better than discussions involving camera autofocus systems. Clarke’s law because very, very few people have the slightest grasp […]


Audio for Video


Video is just photos strung together, right? You can just use the on-camera microphone and fix it in post-production, right? NO! Audio is the most forgotten thing during a shoot. When shooting video, even professional TV shows and films capture crappy audio. It’s something that a lot of people consider inevitable. In a big production, […]

Lenses and Optics

Everything but the Sharpness


About 614 times a day I take a phone call or answer an email that is essentially the same question: “How sharp is this lens?” It’s no different in online forums (ok, actually forums are a lot worse) where pages of arguments drone on comparing the results of this bench-test lab review, these MTF charts, […]


The II Conundrum


First, things first: this is simply an editorial. So there’s no worthwhile knowledge in this article, just my opinions. A few years ago, when a new version of anything came out, here was the Lensrentals drill: Buy the new version, anywhere at any price because we couldn’t possibly get enough. Everyone would want one. Sell […]

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