bigbulls

Kraton, You would probably get a whole lot more responses if you started a new thread about binocs.

But I use nothing over 8 power. Anything bigger than that (10X +) is either too heavy and bulky or if in a compact model is very light restrictive. The 10X and larger are also best used on a tripod to get a steady picture.

When you look for binoculars divide the objective (large end) size by the power and you will get the exit pupil size. For good light transmission you will wnat to have an exit pupil size of at least 4mm up to about 8mm. The bigger the magnification you have or want the larger the objective lense you will need to get good light transmission. You can see how a 10X25 will only give you an exit pupil of 2.5mm thus not letting your eye absorbe the maximum ammount of light but an 8X32 will give you 4mm exit pupil size which is about the size of your pupil during daylight. To get the same ammount of light to your eye in a 10 power binoc you will need a 40mm ebjective lense and for a 12 power binoc you will need a 48mm objective lense.