Naturebird
Member

I have a Vortex Viper 8x42 and a Nikon Monarch M7 8x30 that both provide a sharp image for about 50-60% of the radius(meassured from the center to the edge of the image as viewed in the binocular). After this the sharpness declines and the image becomes softer. Some of this softness can be adjusted for with the focus wheel, but not all.
The Viper HD has a slightly smaller sharp area in comparison to the Nikon Monarch M7. I started to think about this when i testet a friends Hawke Frontier ED 8x42, and that had a noticeably bigger sharp area than both of mine. I was a bit surprised since they are both similar priced.
How big area should be sharp on a pair of binoculars?


The Viper HD has a slightly smaller sharp area in comparison to the Nikon Monarch M7. I started to think about this when i testet a friends Hawke Frontier ED 8x42, and that had a noticeably bigger sharp area than both of mine. I was a bit surprised since they are both similar priced.
How big area should be sharp on a pair of binoculars?

