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If using a stereo microscope with an auxiliary lens, the magnification factor of this lens should also be employed in the equation by multiplication with the objective magnification. You will have to multiply the eyepiece magnification by the objective magnification to find the total magnification before dividing the field number.

Note that the extent of the Field of Vision depends on the magnification. Objectives with higher magnifications have smaller Fields of Vision. Thus, the size of the Field of Vision should be selected as a function of the size of the features that are to be studied. Bacteria are smaller (around 5 microns) than most human cells (a brain's astrocyte can have 90 microns in diameter). Therefore, to study astrocytes larger Fields of Vision are necessary.

Professor Rose

As you increase the magnification, the field of vision is reduced. Depending upon the lens system, this can vary. A crude way of measuring the field of view is by using a ruler under the microscope for a particular magnification.

When you switch eyepieces or objective lenses, ensure to repeat the FOV calculations with the new inputs on field number and magnifications. For objects that require higher magnifications, convert your measurements from millimeters to micrometers.

For instance, if your eyepiece reads 10X/22, and the magnification of your objective lens is 40. First, multiply 10 and 40 to get 400. Then divide 22 by 400 to get a FOV diameter of 0.055 millimeters.

Field of view (also abbreviated as FOV) for a microscope is the extent of the observable area in distance units. The optics provide a clear and undistorted view in a field around the optical axis, and the field of view is selected from this.  The rays that produce the image in this view are generally aberration-free and do not create a significant falloff in image intensity.

EdmundtRollsWarwick

To calculate the field of view of microscope you need to know the eyepiece magnification, field number and objective lens. Once you have this information you can calculate the field of view of the microscope by dividing the field number by the magnification number.

VisNetRolls

Higher power lenses will allow you to view tiny objects, so the angle of view will be small; low power lenses will do the opposite and let you view bigger (wider) objects.

When you record the image to a digital medium the FOV can be expressed as a distance (e.g., 1 mm) or in calibrated pixel counts (e.g., 1024 pixels at 1 um/pixel) along the major axis.

The Field of View on a microscope determines the size of the imaged area. It gains importance when you want to measure specifics such as densities -for example, an experiment to estimate the density of cells in a solution. To get the answer, you have to acquire an image of a Field of View, count the number of cells and divide it by the imaged area. The result would be an estimate of cells/micron.

Field of view microscope definition in simple terms it is the area you see under the microscope for a particular magnification. Say, for example, you are viewing a cell or specimen under an optical microscope. The diameter of the circle that you see is the field of view of the microscope.