Best Binoculars for Birding

Below about $250, birding binoculars already have the basics birders once paid more for: phase-corrected prisms, waterproofing and close focus around 5 to 7 ft. Owners of the Celestron Nature DX, Nikon Prostaff P7 and Vortex Diamondback HD describe the same weak points at this level: color fringing on birds against a bright sky, eyecups or focus wheels that vary from unit to unit, and soft edges. ED glass first appears at $230 in the Celestron Nature DX ED. Glasses wearers should look hard at the Opticron Oregon 4 PC 8x42 at $189, which has 22mm of eye relief.

Between roughly $340 and $550 the money goes mostly into field of view. The Celestron TrailSeeker ED, Athlon Midas G2 UHD and Hawke Frontier ED X 8x42 all show 426 ft at 1,000 yards, and the Nikon Monarch M7 8x42 435 ft. Owners say that width makes warblers in a canopy far easier to find, but the edges of these wide fields soften, and glare toward a low sun is the complaint most often made about the M7. From about $1,000 to $1,700 the step is flatter edges and less weight. The Nikon Monarch HG and Zeiss Conquest HDX add field flatteners, and Zeiss says its SFL design is up to 30% lighter than comparable binoculars, which is why the SFL 8x40 weighs 22.6 oz.

At the top, the Swarovski EL 8.5x42 ($1,999), Zeiss Victory SF 8x42 ($3,000), Swarovski NL Pure 8x42 ($3,149) and Leica Noctivid 8x42 ($3,399) each have a different strength. Owners describe the NL Pure's 477 ft field as walk-in but say low sun can cause veiling glare. The SF controls glare better and balances well in the hand, and the Noctivid trades field width for color and depth of field.

Format matters as much as price. An 8x42's 5.25mm exit pupil keeps the view bright and forgiving into dusk. A 10x42 drops to 4.2mm and shakes more, but earns its place for shorebirds and raptors at a distance. An 8x30 or 8x32, such as the 16.4 oz Monarch M7 8x30, saves weight and gives up only the last light. The Kowa BD II XD 6.5x32's 525 ft field suits dense woodland. Several birding models are out of production and remain only for used or closeout shopping: the Zeiss Conquest HD 8x32, 8x42 and 10x42, the Swarovski EL 8x32, and Kowa's BD II XD 8x42 and YF II 8x30.