OPALE stereozoom is The Modular Stereozoom ... Whoever Teachers, Industrials or Non-professionnals having any passion will find in OPALE range the exact system you may require. Main characteristics : - 1:6,3 zoom ratio. - Important working distance. - Field 24 mm eyepieces. - Very large range of accessories, stands, additionnal objectives, eyepieces, lighting (including epi axial lighting), CCTV or digital outputs, ... All these characteristics are shown in the following technical leaflet. Feel free to consult it.