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Everything on Field of View Notes, organised by topic.

Field Lens Guides

• Best Sunglass Lenses for Birding Conditions — The best all-around birding sunglasses use clearly labeled UV400 or 99-to-100-percent UVA/UVB protection, a comfortable close-covering frame, and a tint.

Fit & Care

• How Sunglasses Should Fit Without Pinching — Sunglasses should sit level with the lenses centered in front of your eyes, remain stable when you look down or turn, and avoid painful pressure on the.