Microscope Sales and Service :: Field of View Formula - Microscopy Continuing Education

Field of View Formula - Microscopy Continuing Education

Field of View Formula - Microscopy Continuing Education

 

HOW TO DETERMINE YOUR FIELD OF VIEW UNDER A SPECIFIC MAGNIFICATION IN MILLIMETERS


1) Look at your microscope eyepiece. After the eyepiece magnification you will see a F.O.V, number.

(Example: 10x/22  The 22 is your Field Number)

 

2) Use the following formula to obtain the total diameter:

 

Formula = Field Number Divided by Objective Magnification

 

3)  Multiply your Answer by 1000 to convert to Microns (or move the decimal 3 spaces to the right.)


We've taken the time to do the math for you and provide you with this chart. Simply find the intersection of your microscope objectives magnification and the eyepiece field number to determine the diameter of your field of view.

 

 

Eyepiece Magnification

Eyepiece Magnification

Eyepiece Magnification

Eyepiece Magnification

Eyepiece Magnification

Objective Magnifiation

18mm

18.5mm

20mm

22mm

25mm

2x

9mm

9.25mm

10mm

11mm

12.5mm

4x

4.5mm

4.625mm

5mm

5.5mm

6.25mm

10x

1.8mm

1.85mm

2mm

2.2mm

2.5mm

20x

0.9mm

0.925mm

1mm

1.1mm

1.25mm

40x

0.45mm

0.4625mm

0.5mm

0.55mm

0.625mm

50x

0.36mm

0.37mm

0.4mm

0.44mm

0.5mm

60x

0.3mm

0.3083mm

0.3333mm

0.3666mm

0.4166mm

100x

0.18mm

0.185mm

0.2mm

0.22mm

0.25mm