Why are my photos blurry? 7 causes and how to fix them
A blurry photo is frustrating, but the blur itself usually tells you what went wrong. Look closely at the picture before changing any setting: is everything soft, or only part of it? Are the edges smeared in one direction, or evenly fuzzy? This guide shows how to read those clues and which setting to change for each cause.
Quick diagnosis
| What you see | Most likely cause | Go to |
|---|---|---|
| The whole photo is smeared, with double edges in one direction | Camera shake | 1 |
| The background is sharp but the moving subject is smeared | Subject motion | 2 |
| Something is sharp, just not what you wanted | Missed focus | 3 |
| Only a thin slice of the scene is sharp | Very shallow depth of field | 4 |
| Everything is soft and low in contrast, with glowing lights | Dirty or fogged lens | 5 |
| Grainy, smudgy detail in a dark photo | High ISO and noise reduction | 6 |
| Soft corners or soft overall at f/16–f/22 | Lens limits and diffraction | 7 |
1Camera shake
The whole picture is soft, including things that were standing still. Look for double edges or short streaks of light, all pointing the same way.
The camera moved while the shutter was open. At slow shutter speeds, even your heartbeat or pressing the button is enough. Longer lenses magnify every small movement.
- Use a faster shutter speed. A safe starting point is 1 / focal length: 1/50 s at 50 mm, 1/200 s at 200 mm (multiply by the crop factor on APS-C or Micro Four Thirds).
- Turn on image stabilisation, but switch it off when the camera is on a tripod.
- Hold the camera with both hands, elbows against your body, and press the button gently. Breathe out and shoot.
- Lean on a wall or rest the camera on something solid.
- For slow speeds, use a tripod and the 2-second self-timer so pressing the button does not shake the camera.
2Subject motion
The background is sharp, but a person, animal or vehicle is smeared along the direction it was moving.
Your shutter speed was fast enough to hold the camera steady, but not fast enough to freeze the subject.
- Raise the shutter speed: about 1/250 s for walking people, 1/500 s for running children and pets, 1/1000 s or faster for sports and birds.
- Use shutter priority (S or Tv) so the camera keeps the speed you choose.
- Let ISO rise. Some grain is better than a blurred subject.
- Pan: follow the subject with the camera while you press the button. The background blurs, but the subject stays sharper.
3Missed focus
Part of the photo is perfectly sharp, but it is the wrong part: the wall behind a person, or the fence in front of the animal.
The autofocus chose a different target than you did. In wide-area modes, it often picks whatever is closest or has the most contrast.
- Choose a single focus point and put it on the subject yourself.
- For people and animals, turn on eye or face detection if your camera has it.
- For moving subjects, use continuous autofocus (AF-C, AI Servo) instead of single (AF-S, One Shot).
- Zoom into the photo on the screen right after you take it. Checking at full size is the only reliable test.
4Very shallow depth of field
The focus point is sharp, but a face's ears or the second person in a pair are already soft. The sharp zone is only a few centimetres deep.
Wide apertures such as f/1.4–f/2.8, long focal lengths and close distances all make depth of field shallower. Combined, the sharp zone can be thinner than a nose.
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- Close the aperture a little: f/4 to f/5.6 for one person, f/8 for groups.
- Step back a little; depth of field grows with distance.
- Line people up at the same distance from the camera.
5Dirty or fogged lens
Everything is evenly soft and low in contrast. Bright lights have a glow or halo, and the problem is the same in every photo.
A fingerprint, dust or condensation on the front glass scatters light across the whole image. Moving from a cold room into warm, humid air often fogs the lens.
- Look at the front of the lens against the light.
- Clean it with a blower first, then a microfibre cloth in small circles. Do not use clothes or tissues that can scratch.
- If the lens fogs up, let the camera warm up in its bag for 15–30 minutes instead of wiping it repeatedly.
- On a phone, wipe the lens before every important shot. It is touched all day.
6High ISO and noise reduction
The photo is not smeared, but fine details such as hair, grass and fabric look waxy or painted. Usually in dim light.
At high ISO the camera, or the phone's processing, smooths noise away and takes fine detail with it.
- Add light if you can: move to a window, open the curtains, turn on a lamp.
- Use a wider aperture to let in more light before raising ISO.
- Shoot in RAW and apply noise reduction gently in editing instead of relying on the camera's strongest setting.
7Lens limits and diffraction
Corners are softer than the centre, or the whole image loses crispness at very small apertures such as f/16–f/22.
Most lenses are a little soft wide open, especially at the edges. At very small apertures, light spreads as it passes the edges of the tiny opening (diffraction), and the whole image softens.
- For maximum sharpness, use the middle apertures: usually f/5.6 to f/8.
- Avoid f/16–f/22 unless you need the depth of field or a slow shutter.
- Put the important subject nearer the centre of the frame when shooting wide open.
Before your next shot
- Shutter speed at least 1 / focal length (faster for moving subjects)
- Stabilisation on handheld, off on a tripod
- Single focus point or eye detection on the subject
- f/4–f/8 unless you want a blurred background
- Clean lens
- Zoom in on the screen to check the first shot