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Category » Resolution Tests

Equipment

Testing the Best Ultra-Wide Lenses for the Perseids Meteor Shower

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Meteor showers can be some of the most exciting celestial events to shoot, but they can also be quite the challenge to get a good meteor photo. With about ten years of practicing astrophotography and timelapse, one of the best lessons I’ve learned with increasing chances of a good meteor shot is: go wider, a […]

Lenses and Optics

Sony FE 20mm f/1.8 G Optical Tests

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I haven’t published much optical testing in the last year for many reasons; some obvious, some not. But published or not, we still test things, and occasionally something comes up that I think I need to write up. The Sony FE 20mm f/1.8 G is one of those things. As wide-angle primes go, it’s reasonably priced […]

Equipment

MTF Tests of the Tamron 17-28mm and 28-75mm f/2.8 Di III RXD Lenses

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Tamron has a nice set of three f/2.8 zooms for Sony E mount cameras. Today I’m putting out MTF results for the 17-28mm f/2.8 Di III RXD and the 28-75mm f/2.8 Di III RXD. They offer a reasonably priced alternative to Sony-branded lenses, and Tamron has been making good products lately. I’ll admit to a […]

Nikon 120mm-300mm Teardown

New Items

A Peek Inside the AF-S Nikkor 120-300mm f/2.8 FL ED SR VR

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We’ve wanted to look inside the Nikkor AF-S 120-300mm f/2.8 FL ED SR VR lens. When we took apart a Z lens recently, we found Nikon had moved on from their ‘classic’ internal optomechanical and electrical design for a neat, modern design. We were interested to see if newer F lenses would pick that up, or if they would […]

Lenses and Optics

Practical Use of Field Curvature Graphs – the 50mm Primes

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In my last two posts (1,2), I’ve been using field curvature graphs to look at how lenses behave as you stop them down. It’s been a fairly limited data set; basically 35mm prime lenses and some zooms at 35mm. I’m going to keep going with this topic and today look at a different focal length […]

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