Compact binoculars as a second pair
Exit pupil, field width, and weight all pull in different directions — here's how to weigh them for a second pair.
Fluid drag and the case for a better tripod head
Fluid drag bridges the gap between a locked head and a loose one — here's how pan-and-tilt, gimbal and video heads each handle it.
Zoom binoculars: why variable magnification rarely delivers
The optical compromises behind zoom binoculars explain why most serious birders still reach for a fixed-magnification pair.
Choosing binoculars for glasses wearers
Long eye relief and exit pupil matter more than any spec sheet suggests when your glasses sit between you and the field.
Choosing a spotting scope: the spec sheet vs the view
The specs that actually separate a usable scope from a bright one, tested in the light conditions birders work in most.
Binoculars 101: How Exit Pupil Size Affects Your Birding Experience
Exit pupil size determines how bright your image feels at dusk, and it should steer your choice of magnification and objective lens.
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