Stereozoom / Macro Zoom On-Screen Magnification & Field of View Calculator

See how the zoom body, front objective / auxiliary lens, eyepieces, C-mount / relay, camera sensor and monitor work together. This version is laid out to make it clearly different from a compound microscope system.

Working distance is not included because it varies significantly between microscope brands and objective systems. Always check the individual microscope specification when working distance is important to the application.

Choose your setup

These are the main optical and display values used in the calculation.

Zoom body magnificationThe magnification setting on the stereozoom / macro zoom body. Front objective / auxiliary lensThe objective or auxiliary lens fitted below the zoom body. Eyepiece magnificationUsed for the visual magnification through the eyepieces. C-mount / relay lensThe optical factor between the microscope and camera sensor. Camera sensorGeneric sensor formats keep the tool manufacturer-neutral. Monitor size

inch diagonal

Enter the physical diagonal of the display.

Advanced settings

Screen aspect ratio Image fills

% width

On-screen digital zoomThis is additional zoom applied by the user in the camera software or display. It enlarges the image but does not increase optical resolution.

Follow the image through the system

The example PCB and the live values change as you change the settings. Scale bars are shown in mm.

Specimen example

— estimated camera field width

→

Stereozoom microscope

Zoom body1.00×

Objective lens1.00×

Eyepieces10.0×

→

Camera + relay

Relay / C-mount0.50×

Sensor size7.18 × 5.32 mm

Camera-path magnification0.50×

→

Monitor

13.0" display
1.0× on-screen zoom

Visual magnification through eyepieces—

Camera-path optical magnification—

Approx. displayed magnification—

Approx. horizontal field shown—

Visual magnification = zoom body × objective × eyepiece. Camera-path magnification = zoom body × objective × C-mount / relay. The on-screen zoom then crops and enlarges the camera image, changing the displayed magnification but not the microscope’s optical resolution.

The PCB image is used as a visual example only and is not a calibrated measurement image. Field-of-view and scale values shown by the calculator are estimates based on the selected optical factors and nominal camera sensor dimensions.

Your cart is empty

Stereozoom / Macro Zoom On-Screen Magnification & Field of View Calculator

Choose your setup

Follow the image through the system

Join our email list