Excellent value - Brunton Eterna 15x51 High Power Binoculars - Waterproof/ Fogproof / w/ Tripod Adapter

Ignoring the price, these are good. Considering the price, these are excellent.

The sweet spot a bit small. Moving away from the sweet spot, you can detect some color fringing (if it is bright and you are looking for it). The FOV is nice and wide. No obvious achromatic aberration (field is flat, lines are straight). The focus wheel is more responsive than I prefer - most new optics seem to go this route. Resolution, color, contrast, brightness are all good. Feel, balance, eye relief are all very good.

I was initially going to purchase Vortex Viper HD 15x50 (it is my opinion the Vortex are the better product but not by a lot). After reading a few favorable reviews in the astronomical community, I decided to give the Bruntons a go. I got the Brunton 15x51 for less than half the price of the Vortex. I have kept the Bruntons and am more than happy.

This review was written in the old system and had content requirements that are different than reviews written today.