The optical design of the ST-606 stereo microscope is two switch with fixed magnification objectives ( 1X/3X or 2X/4X ). The image is sharp and clear over a widefield of view.
Zoom Stereo Microscopes are a non-step magnification zoom. The objectives are adopted by poly-membrane achromatic lenses and collocated with widefield eyepieces.
The optical design of the OPTIMA Stereo Microscope is two switch with fixed magnification objectives ( 1X/3X or 2X/4X ). The image is sharp and clear over a widefield of view.