Category » Roger’s Ramblings

Geek Articles

Is Your Camera Really The Best Optical Test?


“But you must not eat from the tree of the knowledge of good and evil, for when you eat from it you will certainly die.” Genesis 2:17. I have enjoyed, for some years now, the process of learning about lenses and optics. This blog shares a lot of what I’m in the process of learning. A lot […]

Lenses and Optics

The (sort of) Great 400mm Lens Shootout!


I get asked a lot about different telephoto lenses. Is the 400 DO II better than the 400 DO? Which is better, the Tamron 150-600mm or the Sigma 150-600mm? You’ve probably noticed that I don’t answer those questions. The reason is simple. Our optical bench is designed to test lenses up to 2.5kg weight and […]


Pay Attention to the Man Behind the Curtain


  A Reasonably Non-Geeky Guide to Lens Tests and Reviews Hardly a day goes by that on some forum somewhere a nasty argument is going on about lens testing and reviewing. (Going forward, I’m going to use the abbreviation R/Ts for Reviewers and Testers.) As with all things on the internet, these discussions tend to gravitate […]

Humor and sarcasm

My Third Grader Analogy for Lens Reviews and Testing


I make a joke about this sometimes, but I think it’s more and more appropriate. Every day, I see more and more people take some single bit of data published on a lens and extrapolate the entire meaning of the photographic universe from that bit of data. My joke has always gone, “a single lens analysis […]


Roger’s Only Slightly Angry Father’s Day Gift Suggestions


I will admit I’m a nightmare to buy gifts for. If I want it, I generally have already bought it. So my kids tend to dread Father’s Day because they have to find a gift that I want that I haven’t realized I want yet. Well, that’s how it should work in theory. In practice, […]

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