Typically binoculars with a magnification of 7x to 10x are used. Microscope objectives are characterized by two parameters&colon; magnification and numerical aperture. It also features a 100% viewfinder with 1x magnification. Microscope objectives are characterized by two parameters, namely, magnification and numerical aperture. Night vision goggles combined with magnification lenses constitutes night vision binoculars. Use of an operating microscope or other magnification may improve outcomes. A 10x50 binoculars is better than an 8x40 for magnification, sharpness and luminous flux. There is a lowest usable magnification on a telescope. The commander has a fixed daysight with 8X magnification. Excellent quality results up to 4x life-size magnification are possible. There are also telescopic sights with variable magnification. He later made improved versions with up to about 30x magnification. The resolution is not given by the maximum magnification (or "power") of a telescope. Note again that a negative magnification implies an inverted image. See the image above, at high magnification.