Exposure Value (EV) - Latitude & Time
The exposure value (EV) is calculated based on your selected
latitude, date, and time of day.
- Select a point on the map to set latitude.
- Choose date and time to estimate sun elevation.
- The EV chart shows how exposure changes throughout the day.
- Cloud coverage can reduce the EV value with up to -3 EV on a heavy overcast day.
Auto Exposure Modes
Auto exposure calculates suitable camera settings for different subject types like Portrait, Landscape, Sports/Action, Macro and Street.
Exposure Mode Profile makes it possible to change the profile and set the max and min values for aperture, iso and shutter and the priority when calculating the camera settings.
View the calculated camera settings the profile creates at different EV values in the Exposure Mode Table widget.
Exposure Value (EV) - Camera
Match the Camera EV to the Latitude EV by:
- Changing aperture, shutter speed and ISO.
- Click on the values to change/increase them.
- Click on down-arrow to decrease values.
Correct/incorrect Camera EV is indicated by:
- Green = correct, Red = overexposed, Blue = underexposed.
- The Gray Card; the inner gray tone should match the outer.
The Camera EV value is displayed as a blue ring in the chart.
- The exposure is correct when the blue ring is on the yellow line.
Image Noise Comparison
The image panels show the relative noise differences between
camera sensor formats.
Change the camera sensor by clicking on the Sensor Format value (FF, MFT or APS-C).
- Higher ISO increases visible noise.
- Smaller sensors exhibit stronger noise at equal ISO.
- Noise levels have been measured and modelled from actual image files at various ISO values.
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The cameras in the examples are Nikon D500 (APS-C, 20MP), OMS OM-1 (MFT, 20MP) and Sony A7V (FF, 33MP). More camera models might be added in the future.
Typical EV-values at various light conditions
