Start with these settings
Your settings appear here.
Sources & credits
Source: Earth's Moon (PIA00405), Galileo, NASA/JPL/USGS (opens in a new tab)
Source: Total lunar eclipse, 14 March 2025, NASA/Jordan Cochran, NASA Glenn (opens in a new tab)
Source: Fred Espenak's exposure table for lunar eclipses (NASA) (opens in a new tab)
Camera and lens specs come from their makers. How the numbers work
Next step
About Umbra
Umbra helps you photograph the moon with the camera you already own. Pick your camera and lens, say whether you're on a tripod, in your hands, or on a star tracker, and it gives you a starting aperture, shutter speed, and ISO. This week's moon is figured from today's date right on your device, so a thin crescent and a full moon each get the right starting point.
When Earth's shadow slides across the moon, switch to Eclipse. Drag the moon until it matches the sky, from the first soft shadow to a deep red blood moon, and Umbra dims the settings step by step using NASA's eclipse exposure table. It also checks how far the moon will drift while the shutter is open, so the disk stays sharp.
Treat the numbers as your first frame. Take the shot, check the histogram on the back of your camera, and try one frame darker and one brighter. After your first visit it can keep working when you lose signal, and your gear is saved only on this device.