Review on Stereo Microscope Auxiliary Attachment Objective by Gerson Lagerquist

Barlow lens 0.5x gives half the magnification and twice the working distance. The 2x Barlow lens offers twice the magnification and half the working distance. What does that mean? A 0.5x Barlow lens gives you a wider field of view because you can get further from your subject. The microscope camera "zooms in" by moving it closer or further away from the object. Note. To zoom out completely, you need an extra staff rod.