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How Do I Work Out The Field Of View On A Microscope?

FIELD OF VIEW = FIELD NUMBER / OBJECTIVE LENS MAGNIFICATION

What is the field number?

This is the second number on your eyepieces. For example, an eyepiece with WF10X/22 written on it has a field number of 22.

EXAMPLE 1: If you’re using a compound microscope:

If your eyepieces have written on them: WF10X/20

And you’re using the 40x objective lens.

You will have a field of view of:

20 / 40 = 0.5mm (500 microns)

EXAMPLE 2: If you’re using a stereo / dissecting microscope:

If your eyepieces have written on them: WF10X/22

And you’re using the 0.7x zoom increment.

You will have a field of view of:

22 / 0.7 = 31.42mm 

If you found this helpful then others will too, so be sure to share this blog post with friends/colleagues/Facebook groups that might find this useful….thank you in advance and happy viewing!

Got a question?  Please phone us on 01284 789697, or email us sales@gtvision.co.uk

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