Exposure Meter

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You can measure the exposure values by Incident-light or Refrected-light.

So, you can use "Time value priority" or "Aperture value priority".

1. Incident-light meter

This is using the build-in light sensor.

2. Refrected-light meter

This is using the build-in camera.

When you shoot photo, it measure the EV automatically.

By the way, you can not save the photo by this function.

3. Depth of field

You can calculate the DOF by your format size.

Also you can compare the DOF and Fno between 135 and your camera's format.

This is useful for digital camera.