Lunar Eclipse Photography

What actually happens during a lunar eclipse

The Sun, Earth, and Moon line up almost perfectly — Earth sits in the middle, casting two nested shadows into space. The outer cone, the penumbra, is a zone of partial shade where some sunlight still sneaks around Earth's edges. The inner cone, the umbra, is where Earth blocks the Sun completely.

As the Moon crosses into the umbra, the sunlight that reaches it has been bent through Earth's entire atmosphere — every sunrise and sunset happening simultaneously, all around the planet, focused onto the Moon's surface. That refracted light is red. The darker the umbra crossing, the deeper the red. A very dark eclipse can turn the Moon a deep brick-brown that's barely visible to the naked eye. A bright one glows vivid copper-orange for nearly an hour.

Why the Moon is photographically hard

Most people assume night photography means long exposures. For the Moon, the opposite is true — until totality, the Moon is blazingly bright. A full moon through a 400mm lens is effectively a floodlit subject, and your camera will try to expose for the surrounding darkness and completely blow it out.

The fundamental challenge is that brightness changes by a factor of roughly 10,000 between a full moon and deep totality. That's about 13 stops of light — the difference between a sunny beach and a dimly lit room. No single exposure handles both. Your settings at the start of the night will be completely wrong by the time the blood moon appears, and they'll need to change again as totality ends and the bright crescent returns.

The second challenge is the Moon's motion. It travels its own diameter across the sky in about two minutes. At 300mm on a crop sensor camera, that means noticeable trailing in any exposure longer than about 2 seconds. At 600mm, the limit drops to under a second. During totality, when you need exposures of 1–4 seconds, this is a real constraint.

Gear: what you actually need

You do not need specialist astrophotography equipment. The list is short.

A camera with manual exposure control is the only true requirement — any mirrorless or DSLR from the last decade will do. The Moon is bright enough for most sensors during the partial phases; only during deep totality does high ISO performance matter.

A lens of 300mm or longer gives you a moon large enough to show detail. Shorter focal lengths are still usable, especially if you want to capture the Moon above a landscape, but at 50mm the disc is tiny. At 600mm it fills roughly a quarter of the frame on a full-frame sensor.

A remote shutter release — cable or wireless, under £15 — eliminates the single biggest source of blur, which is your finger pressing the shutter button. If you don't have one, use your camera's 2-second self-timer. The camera shakes when you press the button; the 2-second delay means it's settled before the shutter fires.

Understanding your exposure triangle at night

Three settings control exposure: aperture, shutter speed, and ISO. At night they push against each other more acutely than in daylight.

Aperture is the opening in your lens, expressed as an f-number. A lower number means a wider opening and more light. Your lens has a maximum aperture — f/2.8, f/4, f/5.6 — and you cannot go wider than that. During totality you'll want to use the maximum aperture your lens allows.

Shutter speed controls how long the sensor is exposed. For the Moon, this is a balance between getting enough light and avoiding motion blur from the Moon's movement across the sky. Shorter is better for sharpness; longer is better for brightness. The 500 rule gives you a rough guide: divide 500 by your focal length to get the maximum shutter speed in seconds before trailing becomes visible. At 400mm, that's about 1.25 seconds.

ISO controls how sensitive your sensor is to light. Higher ISO means brighter images but introduces noise — that digital grain that makes dark areas look rough. Modern cameras handle ISO 1600–3200 cleanly. ISO 6400 is usable with care. Above 12800 the noise usually becomes intrusive, though post-processing can recover some of it.

During the bright phases, you'll use low ISO and fast shutter speeds. During totality, you'll open aperture fully, push ISO high, and accept longer exposures.

The phases, one by one

Penumbral begins as the Moon enters the outer shadow. The dimming is subtle — barely noticeable with the naked eye, though you may see one edge slightly darker. Camera settings change only slightly from a normal full moon. Use this time to practise, not to watch. Get your focus locked and your framing dialled in.

Partial is when the drama becomes obvious: the umbra's dark bite is unmistakably visible, eating across the disc. The challenge here is dynamic range. The bright lit crescent and the dark umbral portion are separated by around 5–7 stops — your camera cannot properly expose both simultaneously. The professional approach is to expose for the bright part (protecting the highlights) and bracket aggressively. Blend the exposures in post-processing. This phase is arguably the most technically difficult of the night.

Totality is what everyone comes for. The entire disc is within the umbra and glows red or orange depending on how much dust is currently in Earth's atmosphere. The Moon is roughly 10,000 times dimmer than a full moon. Exposures of 0.5 to 4 seconds at ISO 3200 are typical at f/5.6. The colour and brightness shift throughout totality — keep shooting every 30–60 seconds. A longer exposure reveals more colour; a shorter one shows more surface detail. Shoot both.

Deep blood moon is the maximum eclipse, when the Moon is furthest into the umbra and darkest. Some eclipses produce a vivid blood-red Moon here; others — particularly after large volcanic eruptions, which load the atmosphere with particles — produce a near-invisible dark brown disc. You will not know which until the night.

Focus: the detail that kills most shots

Focus failure is the single most common reason blood moon photos are disappointing. It looks fine on the camera's LCD at the time. It looks soft when you zoom into the file at home.

Autofocus struggles with the Moon even in good conditions. During totality, when the Moon is dim and red, it fails completely — the camera hunts, never locks, and fires anyway. The result is a blurry red blob.

If you accidentally knock the focus ring during the night, go back to the edge of the Moon — the boundary between the lit crescent and the dark shadow is the sharpest line available — and refocus there before proceeding. Never try to refocus on the dim red disc during totality.

Bracketing: insurance against a moving target

Because the Moon's brightness is changing throughout the eclipse, and because each phase presents different exposure challenges, bracketing is your primary safety net.

Bracketing means taking several shots in rapid succession at different exposures — usually the calculated setting plus 1 stop brighter and 1 stop darker, and sometimes ±2 stops. This gives you five frames from a single burst. At home, you pick the one that looks best, or blend two of them.

All modern cameras have Auto Exposure Bracketing (AEB). Set it to ±2 stops, put the camera in Continuous drive mode, hold the shutter button, and the camera fires all five frames automatically. The whole burst takes about 1 second.

Shooting RAW: why it matters here

RAW files store the full data from the sensor before the camera processes it. JPEG files have been compressed and processed in-camera, and that process discards data permanently.

For lunar eclipse photography this distinction is significant. During totality, you may slightly overexpose the Moon to capture enough colour. In a RAW file, you can recover those highlights in Lightroom or Capture One after the fact. In a JPEG, they are gone. Similarly, the shadows around the disc in a dark-field photo respond much better to RAW lifting than JPEG lifting, which introduces colour banding.

The night before: what to check

Weather is the entire game. A single thick cloud at the wrong moment ruins hours of preparation. Check multiple forecasts the day before — not just the general forecast for your area, but a cloud-cover map. Meteoblue and Windy both show cloud layer forecasts hourly. Have a backup location in mind if your primary site looks cloudy.

Charge every battery you own. Put one in the camera, keep the spare in an inside jacket pocket — the warmth slows discharge. Cold nights kill batteries 2–3 times faster than normal. Running out of power 20 minutes into totality is a specific kind of misery.

Format your memory cards. Fill them with test shots to make sure they're working, then format. You do not want to discover a card error at midnight.

Scout your location in daylight if possible. Know which direction the Moon will be, whether buildings or trees will block the view at the relevant altitude, where you'll set up the tripod, and whether there's artificial light that might wash out the scene. The Moon rises in the east and tracks across the sky. Apps like PhotoPills, Stellarium, and SkySafari show you exactly where it will be at each eclipse phase from any location.

On the night: a working sequence

Arrive 30 minutes before penumbral contact. Set up your tripod, attach your lens, and connect your remote shutter. Set the camera to Manual mode, RAW, Daylight white balance, Long Exposure NR off, Image Stabilisation off (IS/VR causes blur when the camera is already on a tripod — it fights itself).

Shoot the full moon. Dial in a starting exposure around f/5.6, ISO 400, 1/400s and adjust from there — the histogram should be pushed well to the right but not clipping. Zoom into a shot at 100% on your LCD and look at the crater edges along the Moon's limb. They should be razor-sharp. If they're not, refocus and check again. Once sharp, switch to MF and leave it.

As the partial phase begins, start bracketing. Check your histogram after every burst. As the shadow grows, incrementally increase ISO and slow your shutter. There is no single correct moment to adjust — you'll make small corrections every few minutes. This is the job.

Thirty minutes before totality, stop adjusting focus. Lock it permanently. The Moon is still bright enough to check, but soon it won't be.

At second contact — when the Moon fully enters the umbra — switch your settings to your totality values. Shoot a burst, review immediately. The histogram will tell you if you're in range. Adjust ISO up if it's too dark, shutter down if you need more sharpness. Once you have a good exposure, shoot every 30–60 seconds. The colour shifts throughout totality; the shots at maximum eclipse will be the darkest and most dramatic.

As the bright crescent returns at third contact, begin reversing your changes. Lower ISO in steps. The partial exit phase is identical in exposure terms to the entry, but in reverse.

Post-processing basics

You've come home with hundreds of RAW files. Here's a minimal workflow.

Cull first — go through and delete anything obviously soft, badly trailed, or redundant. You'll still have a lot, and that's fine.

For totality shots: lift the exposure slightly if the disc is underexposed. Drop the highlights if the bright limb is clipped. Increase saturation and vibrance to bring out the red. Use selective colour if you want to deepen the reds specifically. The Moon's surface will show muted grey-brown tones even in a good blood moon; some of that is real.

For partial phase shots: the dynamic range challenge continues in post. If you shot brackets, align and blend them in Lightroom (Photo → Edit In → Merge to HDR) or blend manually in Photoshop using luminosity masks. Expose for the bright crescent, then mask in the shadow detail from a longer exposure.

For a progression composite — showing all phases in one frame — align your shots in Photoshop, set each Moon layer to Lighten blend mode, and adjust position to show the orbital path. Use images taken at regular intervals (every 5–10 minutes) for a clean arc.

Noise reduction: if you shot at high ISO during totality, apply luminance noise reduction in Lightroom or use Topaz DeNoise. Be conservative — too much noise reduction turns the Moon's textured surface into a smooth plastic disc.

When the next eclipse is

The next total lunar eclipse after the March 2026 event is on December 31, 2028 – January 1, 2029, visible from Europe, Asia, Australia, Africa, North and West North America, the Pacific, the Atlantic, and the Indian Ocean. The March 2026 eclipse was the last until a trio of total lunar eclipses beginning in late 2028, so the wait is meaningful.

The guide above applies to every total lunar eclipse — the phases and mechanics are identical across all of them; only the timing and visibility region change.