Sorry I missed this until now...I have had the 10x45 RF for 4+ years now. Great binos, incredibly clear, and instant ranging. I have ranged solid objects over 1800 yards instantly. I just sent them into Zeiss this winter to have the eye glass refurbished as I had let them take a beating through the years, and they sent them to Germany and fully detailed and replaced the glass and sent them back with zero charges to me. They are basically like new again, and im still plenty happy with them.