Reflections and glass
Shooting Through Glass: Do Anti-Reflection Rubber Lens Hoods Work?
Aquariums, observation decks, museum cases, zoo enclosures, airplane windows, a train ride through mountains: some of the most interesting subjects sit behind glass. The usual results are reflections of your own camera, ghostly lights, and a hazy, low-contrast image.
A soft, wide rubber hood that presses against the glass solves most of that. This guide covers how these hoods work, which type to buy, and the technique that matters even more than the accessory.
Why glass ruins photos
Glass reflects some of the light that hits it. When the scene behind the window is darker than the room you're standing in, those reflections overpower the subject. That's why an aquarium tank in a dim hallway can mirror the bright exit sign behind you, and why night photos from a hotel room show the lamp instead of the skyline.
Three other problems compound it:
- Dirt and smudges on the glass scatter light and reduce contrast.
- Thick or layered glass (airplane windows, aquarium panels) can bend light and soften images, especially at angles.
- Autofocus confusion: the camera may focus on a scratch or reflection rather than the subject.
Your options for cutting reflections
| Method | How it works | Strengths | Weaknesses |
|---|---|---|---|
| Wide anti-reflection rubber hood | Soft funnel seals against the glass | Very effective, works at angles, packs flat | One more item to carry; check vignetting |
| Collapsible rubber lens hood (standard) | Screw-in hood folded out and pressed to glass | Compact, cheap | Smaller seal; less effective with large windows or angles |
| Lens pressed directly on glass | Front of lens touches the window | No gear needed | Can scratch the lens or glass; transmits vibration |
| Dark cloth or jacket | Drape around lens and window | Free | Awkward, needs two hands |
| Circular polarizer | Filters some polarized reflections | Helps with angled glass | Costs light; less effective when shooting square on |
For most people, the wide rubber hood is the most effective option, and it's especially popular for aquariums and observation windows.
Buying checks
- Thread size or adapter range: most mount via your filter thread. Check the sizes supplied; some include adapter rings or a stretchy band that fits a range of lens diameters.
- Front opening size: larger openings seal better on flat windows and reduce vignetting with wide lenses.
- Material: soft silicone conforms to glass and is less likely to scratch. Stiff rubber can slip.
- Depth: deeper hoods block more side light but may vignette at wide focal lengths. Test at your widest setting.
- Foldability: it should flatten into a pocket or bag compartment.
- Phone compatibility: some versions clip or stretch over phones too, useful if you travel light.
Technique: how to shoot through glass
- Clean your patch of glass with a microfibre cloth if it's allowed and practical. Fingerprints on public windows are common.
- Press the hood flat against the glass to create a seal. Keep light pressure; you're blocking light, not pushing.
- Square up as much as possible. Shooting perpendicular to the glass keeps distortion and colour fringing to a minimum.
- Switch off flash. It bounces straight back and is often prohibited near animals.
- Use a fast enough shutter speed. Fish and animals move, and you're likely in dim light. Raise ISO before slowing the shutter too much.
- Focus carefully. Use a single AF point on the subject, or manual focus if the camera keeps locking onto the glass.
- Shoot RAW so you can correct colour casts from tinted glass and water.
Aquarium white balance: water absorbs red light, and tank lighting varies widely. Auto white balance often struggles. Shooting RAW and correcting afterwards, or setting a custom white balance from a neutral area, gives more natural colour.
Situation guide
Aquariums
The classic use. Dark halls make reflections strong, and a rubber hood can make the difference between muddy snapshots and clean, saturated images. A fast prime or a standard zoom at wide aperture helps in low light. Some aquariums have thick acrylic that softens images at angles, so wait for fish to come into the area directly in front of you.
Airplane windows
Plane windows are made of several layers. Shooting at a steep angle through them can produce softness and rainbow-like patterns from stressed plastic. Shoot as square as possible, keep the hood or lens off the inner pane if vibration is a problem, and follow crew instructions about devices during flight.
Observation decks and hotel windows at night
Reflections of interior lights are the main issue. A wide rubber hood with a tripod or a steady surface lets you shoot longer exposures cleanly. Turn off room lights where you can.
Museum cases and zoos
Follow posted rules. Some places don't allow tripods or contact with the glass. A hood that only lightly touches, or that you hold just off the surface, can still help. Never tap or press on enclosure glass in a way that disturbs animals.
Trains and cars
Vibration and moving reflections are the challenge. Keep the hood lightly against the glass, use a faster shutter speed, and expect some shots to be soft. A short burst improves your odds.
Rubber hood vs polarizer
A polarizer can reduce reflections from glass when you're at an angle to it, because reflected light is partly polarized at oblique angles. When you shoot straight on, which is ideal for sharpness, a polarizer does much less. It also costs light, which you can't spare in an aquarium. Use a hood first; consider a polarizer for angled glass in good light. Our ND vs CPL guide explains polarizer behaviour in more detail.
Starting settings for low-light glass shooting
Most glass shooting happens in dim interiors. These are starting points, not rules; adjust for your subject and camera.
| Situation | Aperture | Shutter speed | ISO approach |
|---|---|---|---|
| Slow-moving fish, jellyfish | Wide open or close to it | Fast enough to freeze gentle movement | Auto ISO with a sensible upper limit |
| Fast fish, playful animals | Wide open | Noticeably faster; use burst | Accept higher ISO; noise is better than blur |
| Night city from a window | Moderate, for depth and sharpness | Long, on a tripod or steady surface | Low ISO |
| Landscape from a train or plane | Moderate | Fast, to beat vibration | Auto ISO |
If your camera has a silent or electronic shutter, it can help in quiet museums and around animals. Be aware that fast-moving subjects or flickering artificial lights can cause artefacts with some electronic shutters, so check your results.
Does this work for phones?
Yes. Phone cameras suffer from the same reflections, and because the lens is tiny, simply pressing the phone flat against clean glass often works. The problem is that many phones have a bump or case edge that keeps the lens off the glass, letting light sneak in. Small silicone hoods that stretch over a phone's camera module are available, or you can cup your hand around the lens. A phone with multiple lenses may switch modules in low light, so tap to choose the one you want if your camera app allows it.
Care and safety
- Rinse and dry a silicone hood occasionally; grit trapped in the rim can scratch glass.
- Store it flat or loosely folded so it doesn't develop a permanent crease that breaks the seal.
- Avoid pressing the front element of your lens directly on glass. Even a little grit can leave a mark.
- Don't leave hood and camera pressed against a hot window in direct sun for long periods.
FAQ
Do rubber lens hoods really remove reflections?
They remove most reflections caused by light on your side of the glass by blocking it between the lens and window. They won't fix reflections inside layered glass, scratches, or tints, but they usually make a dramatic difference.
Will an anti-reflection hood fit my lens?
Most attach via the filter thread and include adapter rings or a stretchy mount. Check the listed thread sizes against the number printed on your lens or lens cap.
Can I use a rubber hood with a wide-angle lens?
Often, but deep hoods can vignette at very wide focal lengths. Choose a hood with a large front opening and check your corners at the widest setting.
Is it safe to press my camera against aquarium glass?
Light contact with a soft hood is generally fine, but follow the venue's rules. Avoid pressing hard, tapping, or using flash, all of which can disturb animals.
The bottom line
For anyone who shoots aquariums, city views from high windows, or travel through train and plane windows, a wide silicone anti-reflection hood is a small, cheap upgrade that solves a frustrating problem. Pair it with good technique: clean glass, square angle, no flash and careful focus. When you're ready, see anti-reflection lens hoods on Amazon and check the thread sizes and current price before ordering.