Category » Technical Discussions

Customer Stories

Please, Don’t Take Our Photography and Video Gear to Burning Man

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Each year around this time, we’re faced with what we call a ‘doomsday’ event within the office; where dozens of our camera, lenses and other gear arrive back from rental orders, destroyed by the environment. And while our customer base is amazing, and often accept their repairs and replacement costs to the destroyed gear, each […]

Teardowns and Disassembly

Nearly Complete Teardown of The Canon 70-200mm f/4L IS II

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So, some things happened recently. We got stock on Canon EF 70-200 f/4L IS II lenses, and even though they go out on rental the day we get them in stock, we were able to do MTF testing on them.  The very low sample variation we saw made us want to take one apart and […]

Lens Test of the 70-200mm f/4IS II

Lenses and Optics

MTF Tests for the Canon 70-200mm f/4 IS II Lens

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Back in the day, and it was way back, my first “L” lens was the Canon 70-200mm f/4L, which I chose primarily because it was a bit sharper and a lot cheaper than the 70-200mm f/4L IS. I moved on years ago. Those lenses were good back then, and perhaps adequate for quite a while, but […]

Sigma Art Series 14-24mm

Equipment

MTF Tests for the Sigma 14-24mm f2.8 Art Series Lens

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Most of you know I’m a big fan of Sigma’s Art prime lenses. They give superior optics at excellent prices just about every damn time. I’ve been more mixed in my opinions of Sigma’s Art zoom lenses. I thought the Sigma 24-105mm f/4 Art was the best 24-105mm I’ve ever tested (and I hate testing 24-105s). The […]

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