Manual camera settings on Android, explained
Pro and manual modes hand you four settings: shutter speed, ISO, white balance and focus. Here's what each one does on a phone, when it's worth taking it off auto, and settings to start from for everyday scenes.
What's different on a phone
On a traditional camera, brightness comes from three settings: aperture, shutter speed and ISO. Most phone lenses have a fixed aperture, so on a phone you control brightness with just two: shutter speed and ISO. White balance and focus sit alongside them. Four settings, each with one job.
You don't have to set all four at once. Most manual or Pro modes let you leave any of them on auto. A good way to learn is to take one setting off auto at a time.
Shutter speed: motion and blur
Shutter speed is how long the sensor collects light for each photo, shown as a fraction of a second.
- Fast (1/500 s and faster) freezes movement: sport, pets, splashing water. It lets in less light, so the camera needs more ISO or more light.
- Medium (1/60 to 1/250 s) is everyday handheld territory.
- Slow (1/15 s and slower) lets in much more light and blurs anything that moves: silky waterfalls, light trails, and your own hand shake. Below about 1/15 s, rest the phone on something or use a tripod with the self-timer.
Each halving of the shutter time (1/60 to 1/125, say) halves the light, which you then make up with ISO.
ISO: brightness at the cost of noise
ISO amplifies the signal from the sensor. Doubling it brightens the photo by the same amount as doubling the shutter time, but it also amplifies noise. On small phone sensors noise shows up quickly, so:
- use the lowest ISO you can for the shutter speed you need;
- in good light, stay near your phone's lowest ISO, usually somewhere around 50 to 100;
- in dim light, choose between a slower shutter on a steady phone (clean image) and a higher ISO (sharp but grainier).
White balance: making white look white
Light has a colour. Indoor bulbs are orange, shade is blue, and daylight sits in between. White balance tells the camera what colour the light is, so it can correct for it. It's measured in kelvin (K):
| Light | Roughly |
|---|---|
| Candle, warm household bulbs | 2,000 to 3,000 K |
| Typical indoor lighting | 3,000 to 4,000 K |
| Daylight, flash | 5,000 to 6,000 K |
| Cloudy sky, open shade | 6,500 to 8,000 K |
Set the number to match the light, and whites come out white. Set it lower than the light and the photo turns blue. Set it higher and it turns warm. That's also a creative choice, not just a correction.
Auto white balance is good, but it can shift from shot to shot, or through a video, as the scene changes. Setting it by hand keeps a series consistent. If you shoot RAW, you can change it later anyway.
Focus: tell the camera what matters
- Tap to focus on your subject. It's the quickest fix when the camera picks the background.
- Lock focus and exposure (often called AE/AF lock) when you want to recompose without the camera changing its mind.
- Manual focus distance helps when autofocus struggles: in the dark, through glass, very close up, or for landscapes and night skies, where you set it to the far end (infinity).
Starting settings for common scenes
These are starting points, not rules. Take a shot, check it, and adjust one setting at a time.
| Scene | Shutter | ISO | Tip |
|---|---|---|---|
| Bright daylight | 1/250 to 1/1000 s | Lowest | Watch the sky. Lower exposure if it goes white. |
| Kids, pets, sport | 1/500 s or faster | Auto, or as needed | Motion beats noise: keep the shutter fast. |
| Indoors | 1/60 to 1/125 s | 400 to 1600 | Set white balance around 3,200 to 4,000 K. |
| Waterfall or stream | 1/4 to 1 s | Lowest | Phone on a support, self-timer on. |
| Night street | 1/15 to 1/30 s | 800 to 3200 | Brace the phone, or use a Night mode. See night photos. |
The longest shutter speed and the highest ISO your phone offers depend on the hardware, and differ between phones and even between lenses.
Manual control in One Camera
Even free, One Camera gives you tap-to-focus, an exposure slider and AE/AWB lock. Manual photo and Pro Video, part of One Camera Pro, put ISO, shutter speed, focus distance and white balance on real dials. One Camera asks your phone what it supports and shows only that, so the ranges on the dials are what your hardware can actually do. Every Pro feature is included in the free seven-day trial.
Questions
What is the best ISO for phone photos?
The lowest ISO that still gives you a fast enough shutter speed. In good light that's your phone's base ISO, usually around 50 to 100. Raise it only when the shutter would otherwise be too slow to hold steady.
What shutter speed should I use on my phone?
For handheld everyday shots, about 1/60 s or faster. Use 1/500 s or faster for moving subjects. Go slower than about 1/15 s only with the phone resting on something.
Why don't I have an aperture setting?
Most phone lenses have a fixed aperture, so there's nothing to adjust. You control brightness with shutter speed and ISO instead.
What white balance should I use indoors?
Start around 3,200 to 4,000 K for typical indoor lighting, then adjust by eye: lower if the photo looks orange, higher if it looks blue.