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Stopped down MTF Tests of cineLenses

Geek Articles

Testing Lenses: Stopped-Down MTF Curves

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For quite a while now we’ve been publishing our MTF curves. They’ve always been the same thing; at least ten copies of each lens, in 4 rotations, and measured at the widest aperture. The reasons for that are (to us) very straightforward. Our purpose in doing the tests is to establish reasonable expectations, learn what type […]

Water Corrosion of a Sony A7sII

Equipment

About Getting Your Camera Wet… Teardown of a Salty Sony A7sII

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People think that because I expect the worst and try to prepare for it, that I’m negative. That’s not it at all. I’m not a negative person; I’m cheerfully cynical. If I expect the worst and it doesn’t happen, I’m happy because things went better than I expected. If I expect the worst and it does […]

8K Sensor and Lens Changes

Geek Articles

The 8K Conundrum – When Bad Lenses Mount Good Sensors

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This is a guest post from Brandon Dube, whose name you’ve seen on many of our articles. In addition to his metrology work, he also does high fidelity numerical optical simulation, and spends his summers at places like NASA/JPL working on the cameras that are going in the Mars 2020 rover. This may be our […]

Lighting Tutorials

Geek Articles

Four Lighting Techniques to Try on your Next Photo Shoot

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I’m a lighting guy. Ask any of the higher-ups here at Lensrentals.com, and they can confirm that I’m always pressuring them to get more lighting options available for rent (with varying degrees of success). For me, I was taught that photography translates to the capturing of light on film (or in modern cases, a digital […]

Testing Circular Polarizers

Equipment

My Last Circular Polarizer Post

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I posted an article about circular polarizing filters recently, letting you see some data I obtained for Lensrentals when they were reviewing which of the polarizing filters were among the best. I concluded that they all polarized light really well. I also said that none of the CPs I tested seemed to cause optical problems at […]

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