How We Tested the Best Spotting Scopes We invite manufacturers to submit any new spotting scopes introduced from mid-2022 through 2023. Because this particular category of sports optics is expensive to manufacture, and because the market isn’t nearly as dynamic as rifle scopes or binoculars—after all, once you’ve purchased a spotting scope, you’re unlikely to be in the market for another—we test spotters only every two or three years. Low-Light Performance We also measure the low-light performance of each submission by mounting them to tripods and focusing them at 200 yards at a black-and-white resolution target at twilight, all in order to measure the brightness of the glass. The scope that can “see” the longest into the gathering darkness gets top marks. The scope that loses its night-vision earliest gets the lowest score. Scopes in the middle receive scores somewhere between those two poles. How We Score and Grade Optics We break our 10-point scoring into four general categories: optical performance, mechanical performance, design, and value. The average of these categories is the basis of our grades, detailed below. Optical performance includes the resolution and low-light tests plus the more subjective assessments of image quality and brightness. Mechanical performance assesses the durability of the submission along with its controls: focus and zoom, eyecups and barrel rotation. Design considers the exterior finish, interior blacking, tripod mount, and its innovation and versatility along with its comfort. We ask testers to evaluate this critical question: how long could you glass with this spotter? And then our price/value score rates how much optic—along with warranty and amenities such as carrying case, additional eyepieces, or field cover—you’re getting for your money. The spotter that gets the highest overall score wins our Editor’s Choice award for the best in the category; the optic with the highest price/value score wins our Great Buy recognition. Grading Our 10-point evaluation adds up to a total numeric score, but we translate those to grades for each submission. Our Optical Performance grade combines the scores from resolution, low-light, image, and brightness. Our Mechanical Performance grade aggregates the mechanics and durability score. The Design grade considers Construction, Innovation, Versatility, and Comfort. And then the Price/Value grade is our value grade. To earn an “Excellent” grade, the average of that category must be 9 or higher, which is extremely hard to achieve. “Very Good” is an average score of 7 to 9. A “Good” grade is 5 to 7. Our “Fair” grade is 3 to 25, and “Poor” is anything under 3.