The other major thing to consider for birdwatching binoculars is the dimensions of the target that collects light-weight. A larger (e.g. 40–45mm) aim works far better in very low light-weight and for observing into foliage, but will also tends to make for any heavier binocular than the usual 30–35mm objective. https://eosr41852.is-blog.com/23407825/rumored-buzz-on-canon-cameras