The formula used for calculating the on-screen magnification is:
On Screen Magnification = Objective magnification * Camera adapter lens
magnification * (Full Screen or Capture Window Diagonal Size / Camera
Note: Use of this calculator is meant for approximations and to evaluate changes in the setup, i.e. how much more mag
can I get with a bigger monitor, etc.. To calculate true magnification, one would measure the lines of a stage micrometer
at the magnified output and apply the formula:
1000 * L / V where
T = True magnification, e.g. in a print publication
L = Length of a given number of micrometer lines on the screen or
capture window in mm (as measured by a ruler)
V = Value of micrometer reading in micrometers for that number of lines
So if you were using a stage micrometer, which has 100
graduations each 10 micrometers and you chose to measure 10 graduations,
L would be the length of those 10 graduations in mm as measured by
putting the ruler up to the screen and V would be 100 micrometers.
Note: Not all combinations render acceptable image resolution.
Meyer Instruments does not recommend using 1/4" chip cameras for microscopy.