How to Photograph Reflections: Water, Glass and Mirrors

Reflections are the most attempted and most botched subject in photography. What you see in front of you is perfect: the lake has turned to glass, the wet asphalt has doubled the city, the shop window has folded the street into the interior. Then you open the file — the reflection is soft, or washed out, or the symmetry is a degree off.

The cause is not clumsiness but a conceptual error: treating a reflection as a texture on a surface. A reflection is a second scene. It has its own distance, its own brightness and its own plane of focus. This article is about calculating all three.

Let’s split the axis first: our ND and polarising filter guide is about removing reflections — cutting the glare off water to see the bottom, taking the sheen off leaves to saturate the colour. This article wants the opposite: how to win a reflection. The nice part is that the tool is the same tool; you just turn it the other way.

Why is a reflection always darker?

The sky you see in water is darker than the sky itself. That is not an editing choice, it is physics: water sends back only part of the light that lands on it and lets the rest in.

How much comes back depends on the angle at which the light meets the surface, and it varies dramatically between the two extremes:

• Looking straight down (close to the surface normal) water reflects only about 2% of the light. The rest refracts into the water — which is why, standing up and looking at your feet, you see stones rather than sky.
• Grazing along the surface (a very shallow angle) the reflected fraction climbs steeply, into the tens of percent. This is why wet asphalt gleams like a mirror down the street but is just wet asphalt directly beneath you.

The practical conclusion is the single most important rule in reflection photography: get low. The more you graze the surface, the stronger, brighter and more complete the reflection. Photograph a puddle from eye level and you get wet ground; put the camera almost on the asphalt and the same puddle swallows an entire building.

The brightness difference in practice is around 1-2 stops. Worth knowing for the edit: pulling the reflection up to match the real thing makes the photo look manipulated, because the eye expects the gap. A reflection can never be brighter than its source.

Brewster’s angle: using a polariser backwards

The least known and most useful property of a reflection is this: light reflected off a surface becomes polarised. It lines up along one direction of vibration — and that is precisely what makes it selectable with a polarising filter.

The angle at which this polarisation is strongest is called Brewster’s angle. For water (refractive index ≈ 1.33) it is roughly 53° from the surface normal — which means you are looking down at about 37° measured from the water itself. At that angle, almost all the reflected light is polarised in one direction.

The result is a tool most photographers only know half of:

• Turn the filter one way: the reflection is all but erased. You see the bottom of the pond, the interior behind the glass, the true colour of the leaf.
• Turn it 90°: the reflection comes back at full strength. The sky in the water gets more saturated, more contrasty, more mirror-like.

If you are shooting reflections, the move is not to put the polariser away but to turn it the right way. Rotate it slowly while looking through the viewfinder; you will watch the reflection breathe in and out. Stop where it is strongest.

Two warnings:

• It does not work on metal. Light reflected from conductors (chrome, steel, aluminium) does not polarise the same way, so a polariser barely touches the reflection on a car panel or a metal railing. On dielectrics — glass, water, paint, wood, foliage — the effect is powerful.
• It stains the sky on very wide lenses. Between 16 and 24mm, one edge of the frame looks at the sun at a different angle from the other, so the sky comes out dark on one side and pale on the other. This trap, touched on in landscape sharpness, is the thing you will most often have to fix in wide-angle reflection frames.

Focus: the most common mistake

Most reflection photographs come out soft for a single reason, and it lives in the geometry rather than the settings.

The reflected image does not sit on the surface, it sits behind it. When you look at yourself in a mirror, the image forms not in the glass but behind it — as far back as you are in front. The same holds for a puddle, a lake and a shop window.

So your focus distance is:

Focus distance = camera to surface + surface to subject

One example says it all: you are shooting the reflection of a building 30 m away in a puddle 2 m in front of you. Autofocus usually latches onto the texture on the water — a leaf, a scratch, a ripple — and focuses at 2 m. But the reflected building is at 32 m, effectively infinity. The result: an immaculately sharp water surface and a soft building.

The fixes, in order:

1. Put single-point AF on the reflection itself. Aim at the edge of the building in the water, at the silhouette of the mountain in the lake — not at the debris on the surface. The single-point logic in focus modes and sharpness is not optional here.
2. If AF keeps missing, switch to manual and magnify in live view until the edge of the reflection is sharp.
3. If you want the surface texture and the reflection sharp, you are asking for two very different distances at once — potentially a wider range than depth of field can cover in one frame. Either choose one, or use hyperfocal distance to hold both at acceptable sharpness.

Exposure: fitting two scenes into one frame

A reflection frame really contains two scenes: the real one and the reflected one. The 1-2 stops between them is not a problem on its own — as dynamic range explains, modern sensors take that in their stride.

The trouble starts when the sky joins in. A bright sky, a dark shoreline, and a reflection one or two stops darker still, easily add up to a 5-6 stop range. At that point you have three options:

• Expose for the highlights and lift the shadows in the edit. Shooting RAW, this is enough for most scenes; not clipping the sky is the priority.
• Use a graduated ND. On a lake scene with a straight horizon it is exactly the right tool.
• Bracket and blend. On a tripod this gives the cleanest result.

Make reading the histogram a habit: in reflection photographs there is usually a mass on the right for the sky, one in the middle for the reflection, and one on the left for the shore. As long as nothing is stuck to the right wall, the frame is recoverable.

Wind, ripples and the sweet spot of long exposure

A mirror reflection needs still water, and still water is rarer than you think. Even a ripple a couple of centimetres high scrambles a reflection, because every ripple sends the light somewhere else.

You have two cards to play.

The first is timing. Wind is usually at its calmest just before sunrise, and picks up as the air warms. Shifting your golden hour planning to the morning for reflections is as much about wind as light. Moving to the sheltered side of the shore, into a bay or behind a line of trees, is often faster than waiting hours.

The second is long exposure. Because ripples move, a longer exposure averages them out:

Duration	Effect on the reflection
1/125 s and faster	Ripples freeze; the reflection is broken, “impressionist”
0.5 - 2 s	Ripples soften and the shape of the reflection returns — the sweet spot if you want detail
5 - 15 s	The surface flattens out; the reflection goes soft and painterly
30 s and longer	Water turns to glass, but the reflection’s detail averages away with it

The subtlety here: the longest exposure is not the best reflection. Go long enough and you flatten the water but blur the reflection too — the mountain’s silhouette survives, its texture does not. For a detailed mirror image, stay around 1-2 seconds; for a misty, painterly look, go to 30. Controlling the duration in daylight means an ND filter, and the stop maths is in the long exposure guide. A tripod is mandatory for this entire section.

Composition: here the horizon belongs in the middle

Reflections are one of the places where the rules of composition are deliberately inverted. The rule of thirds says keep the horizon out of the centre; in a symmetrical reflection, the centre is the right answer. The line that splits the frame in two is not a weakness here, it is the subject.

A few practical decisions:

• If you want true symmetry, place the horizon mathematically in the middle and use the level. Tilt shows up twice as much in a reflection; a water surface is a perfect horizontal reference, and the eye catches any error instantly.
• If you want to weight one side, commit: 60/40 looks indecisive, 70/30 looks like a choice.
• Break the symmetry with one thing. Perfect symmetry is beautiful but static; a boat cutting through the reflection, a single bird, one person on the shore adds both scale and story.
• Try inverting it. Rotating the frame 180° so the reflection is on top produces that one-second “wait, what am I looking at” pause. It is a cheap trick, but it works when used deliberately.

Glass and shop windows: the street’s layered scene

After water, the most productive reflective surface is glass, and it is one of street photography’s strongest tools: in a single shop window you can stack the scene inside and the street outside into one frame. It is the most literal form of the layering idea in street photography basics.

Glass has one behaviour of its own: the double reflection. A pane has two surfaces, front and back, and both reflect. In thick glass, or at a shallow angle, the two separate and produce a slightly offset ghost image. You already know the mechanism: the ghost blobs in lens flare come from exactly the same double reflection off glass surfaces — a defect there, a style here.

Practical notes:

• Expose for whichever of the two scenes is the subject. Getting both right is usually impossible; make the call.
• Play with the angle. A few degrees changes the strength of the reflection dramatically; a step to the left does more than any filter.
• Deal with yourself. Wear dark clothes, approach from the side, or include yourself deliberately — all three are legitimate, but an indecisive half-ghost is the worst outcome.
• It gets far stronger at night. A lit window against a dark street gives you a contrast daylight cannot; the “find the pool of light and wait for someone” tactic from night street photography works verbatim on window reflections.

Wet asphalt: the half hour after the rain

The most generous reflective surface in a city is wet asphalt, and its life is short: the half hour after the rain stops — water still on the ground, but no drops left to wreck the frame — is the productive window.

Three things decide the shot: a low angle (crouch again), a light source to reflect (headlights, a sign, a street lamp — something bright has to exist), and a flat film of water. A thin sheet on the asphalt is enough; you do not need to hunt for a puddle.

In this scene the real enemy is not wind but passing cars — the water they disturb settles within seconds, so wait.

Editing: protect the difference

The one big rule of editing reflections: do not match the reflection to the real thing.

1. Set exposure for the real scene and let the reflection stay naturally darker.
2. Give the reflection local contrast, not brightness. Clarity and micro-contrast make it readable; raising exposure makes it fake.
3. Keep a little of the colour cast. Water tints whatever it reflects (a greenish lake, a bluish sea). Leaving a hint instead of neutralising it entirely is what makes the frame believable.
4. Fix the polariser stain. If one side of a wide-angle sky came out dark, balance it with a graduated brush — the classic job for the local tools described in the RAW editing workflow.
5. Align the symmetry last. One degree of rotation reads as two in a reflection, so leave the crop to the end.

Common mistakes

• Focusing on the surface. The reflection is behind it; forget to add the distances and the frame is soft.
• Shooting from standing height. Reflection strength grows with the angle, and eye level is almost always the wrong height.
• Taking the polariser off. Rotate it to strengthen the reflection instead of erasing it.
• Matching the reflection to the original. The eye expects the gap; an evened-out reflection looks fake.
• Exposing for too long. Thirty seconds turns water to glass but erases the reflection’s detail; stay at 1-2 seconds if you want detail.
• Leaving the horizon crooked. Water is the most merciless spirit level on earth — it forgives nothing.