Re: Bushnell Fusion 1600 Yard Laser Rangefinder Binocs
Actually the blue is a byproduct of a coating on the prism for splitting the beam from other incoming light. It can be controlled but would probably make the price go up. From a guy at Leica:
"The Geovid binoculars have on the prism a beam splitter coating separating the laser beam from the light which is used for the image itself. Due to the red shift caused by the eye safe laser, there is a slight color cast towards the blue/green built into the optical path to balance this. This has no negative influence to the contrast on the image. In practice for most people, an image color which is 'moved' slightly to blue/green appears more rich in contrast."
Added: Now that I think about it, the blue tint in the Fusions may be the reason the LRF works so well while the Geovids, with a more neutral color cast, are a bit more limited in their range. (Just guessing really).