Category » Lenses and Optics

Geek Articles

Third Party Ultra-Wide Lenses MTF Comparison

By

Contrary to what most people believe, we do pay some attention when people ask us to do MTF testing on certain lenses. I’m not saying we do it, but we do pay attention to the requests and when we have some downtime will look at that request lists and see if there’s something on it […]

Lenses and Optics

Nikon 70-200mm f/2.8E FL ED AF-S VR MTF Tests

By

Well, we all want to call it the 70-200 VR III, since it replaces the Nikon 70-200 f/2.8G AF-S VR II.  But the new lens is officially the 70-200mm f/2.8E FL ED AF-S VR. It is most definitely a different lens; it’s 22 elements include one fluorite, one high-refractive, and six ED elements, along with new […]

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 […]

Geek Articles

Nikon 105mm f/1.4 E MTF Bench Tests

By

Joey recently wrote an article about his new crush, the Nikon 105mm f/1.4 E lens, and has been in the lab about every other day since then, asking me if I’ve run the MTFs yet. “You’re going to be blown away,” he says. And every other day I tell him, “I don’t get blown away […]

Follow on Feedly