Do binoculars with larger lens, show more in one sighting?

Question

I am looking at 2 different binoculars. The one has a larger outter lens. Is this benefical, or does it matter. Also, it is a more bulky binocular

Answer 1

I agree with Tom, but would add that the larger lens in front is better for night use, such as looking at stars. The bigger the lens, the more stars you will see. A 26mm or 32mm set is fine for day viewing. 42 mm is the "classic" for bird and wildlife observation. I have no idea why, but it is. You want to try for at least 50 mm for star gazing. I think that 50 mm is fine for wildlife, also, so that's what I got for myself. It's good in both situations without getting into the really high-priced stuff.

Answer 2

The large front lens is the objective lens, and large means more light, brighter image. The field-of-view (wide angle) is done with the internal optics. Good for dim light, night viewing.