Category » Geek Articles

Geek Articles

Taking Apart the New Nikon 105mm f/1.4E ED AF-S

By

We recently tested the Nikon 105mm f/1.4E ED AF-S lens and were mightily impressed. Optically it was better than I’d ever expected. We had idly talked about doing a teardown when stock allowed, but we got an unexpected opportunity yesterday: one of our week-old copies had some significant dust in both the front and rear lens […]

Equipment

Canon 24-105 f/4 IS Mark II MTF Results

By

I like to start articles by stating my expectations, because, like everyone, my expectations going in color my opinion after seeing the results. Given Canon’s recent series of home-run lens upgrades, I expected the Canon EF 24-105mm f/4 IS II would be a superb lens. I was particularly expecting improvement at 105mm, which was the […]

Color Bit Depth Explained

Geek Articles

What is Color Depth and Why Is It Important for Video?

By

One of the most common questions I get from video customers is, “What do 10-bit 4:2:2 and 8-bit 4:2:0 actually mean?” The explanation can get pretty technical, so it’s easy to default to the opinion that higher numbers equal better footage. That’s true in a sense, but following that logic leads to another common question: […]

Geek Articles

Testing NASA Optical Lenses – How We Measure Sharpness and Accuracy

By

We’ve spent about 5 years developing and repurposing various types of optical testing for use testing photo and video lenses. It’s been a long process with lots of learning (learning is when you find out you’re doing it wrong), and improvements along the way. We’re pretty close to finished; our methods are fully developed. Sure there […]

Follow on Feedly