Using Galilean optical system, Olympus SZX7 offers 7:1 zoom ratio with video compatibility for image documentation. Variety of objective lenses and eyepieces are available, expanding magnification from 4-336x. Binocular Olympus SZ51 and SZ61 utilize 10° angle of convergence Greenough optical system for superior field flatness. When used with 10x eyepiece, SZ51 provides 5:1 zoom ratio with magnification range from 8–40x, while SZ61 features 6.7:1 zoom ratio with variable magnification from 6.7–45x.
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