There are a few key elements when purchasing binoculars for bird watching. The most important factors are magnification, objective lens size, and weight.
Magnification is the amount of times an image is magnified by the binoculars. For bird watching, you will want a pair of binoculars with at least 8 x magnification. However, more powerful binoculars can make it difficult to hold them steady enough to get a clear image. If you have shaky hands, you may want to consider getting a pair with 10x or 12x magnification.
Objective lens size is the diameter of the front lenses of the binoculars. Larger objective lenses will let in more light, which is helpful in low-light conditions such as dawn or dusk. For bird watching during the daytime, you will want a pair of binoculars with 40 m m or 50 m m objective lenses.
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