A reader chided me for not using the same methodology when testing my copy of the Fujifilm GF 100-200 and another reader’s copy. To review, I tested my copy with a very complicated program that analyzes stacks of focus bracketed images, white balances the raw MTF curves, fits curves to critical measures, and calculates metrics… [Read More]

When I measured the performance of the GF 100-200mm f/5.6 lens at 200 mm, I got good, but not great results. In fact, it was about the weakest performance I’ve seen with the excellent line of GF lenses. Ever since I published those results, people have been saying that their copy of the GF 100-200… [Read More]

In Buddhist, Hindu, and Jain tradition, there is a parable that goes something like this: A group of blind men heard that a strange animal, called an elephant, had been brought to the town. None of them were aware of its form. They said: “We must know it by touch, of which we are capable”…. [Read More]