illumeter 1.3.1

Let's begin by selecting the exposure measurement mode! Illumeter offers three modes: Aperture, Shutter Speed, and ISO. In Aperture mode, the appropriate aperture value is calculated based on shutter speed and ISO settings. Shutter Speed mode determines the correct speed based on aperture and ISO, while ISO mode calculates the right ISO value taking into account aperture and shutter speed settings. The resulting value is displayed in the center of the screen.

Next, adjust the settings by manipulating the rings. Easily tweak aperture, shutter speed, and ISO by sliding their respective rings. The value for the selected mode updates in real-time as you adjust the settings.

Additionally, you can modify the focal length using the green focal length ring. Experiment with focal lengths ranging from 28mm to 200mm, offering flexibility similar to your camera's focal length.

If you need to lock in exposure settings, simply tap on your desired point to lock exposure and focus. The exposure remains fixed at that point while the calculated value stays constant. To release the exposure lock, tap the Unlock button.

Lastly, log and revisit your exposures by capturing angles, frames, and exposures with a tap of the shutter button. Your logged exposures can be easily accessed through a list or map view.