As I mentioned I am a professional developer of optic and optoelectronic devices with more than 20 years experience. The binoculars observation is my hobby for more than 25 years. I often travel and observe objects in different parts of the world and this improves my skills, which correlates with my theoretical and practical knowledge.
zeiss
swarovskioptik
leica
nikonsportoptics
canon
bushnell
ricoh
kowaproducts
leupold
minox