Modern mobile devices have evolved into powerful creative tools that can compete with DSLR cameras in certain scenarios. However, many smartphone owners don’t even suspect that their gadget can take pictures with long exposures, creating spectacular trails from car headlights or turning water into smooth milk. The standard automatic mode often tries to “freeze” motion, making pictures noisy and lacking atmosphere, while manual settings open the door to the world of professional mobile photography.
To achieve the desired result, you need to understand how the sensor works and learn how to work around the limitations of the standard software. In this article, we will look in detail at how to increase shutter speed on an Android phone, what applications will help you bypass software blockages, and how to avoid common mistakes that lead to blurry frames.
The concept of shutter speed in mobile photography
Shutter speed is the time period during which the camera matrix is exposed to light. In the context of smartphones, this parameter is measured in fractions of a second or whole seconds. The longer the shutter is open (or its opening is simulated in software), the more light enters the sensor. This is critical for night photographywhen natural light is not enough to obtain a high-quality frame in automatic mode.
Usually standard cameras limit the maximum exposure time to 1/15 or 1/10 of a second to avoid blurring from hand shake. However, for artistic tasks, such as shooting the starry sky or light flows in the city, this is catastrophically not enough. Increasing the shutter speed to 1, 2 or even 30 seconds allows you to accumulate enough photons to draw detail in the shadows without excessively increasing the ISO, which kills the dynamics of the frame.
It is worth noting that on many devices with matrices like CMOS long shutter speed is implemented through software emulation or mode Long Exposure. In this case, the camera takes a series of short frames and combines them, simulating the operation of a mechanical shutter. Understanding this difference will help you set up your equipment correctly and predict the result.
⚠️ Attention: When setting the shutter speed longer than 1/30 of a second, handheld shooting is almost impossible - the frame is guaranteed to be blurred. Using a tripod or a solid support is becoming a requirement, not just a recommendation.
Using Pro mode in a standard camera
Most modern mid- and high-price smartphones are equipped with a built-in manual settings mode, often referred to as Pro, Manual or Expert. This is the first point you should look at before installing third-party software. The interface may differ depending on the manufacturer's shell (MIUI, OneUI, ColorOS), but the operating logic remains the same.
To access the settings, open the camera application and find the mode switch. Select manual mode and pay attention to the option indicated by the letter S (Shutter) or the shutter icon. Clicking on this item will open the exposure time adjustment scale. On some models, for example Xiaomi or Samsung, the slider allows you to set values up to 30 seconds, which is quite enough for most creative tasks.
If the shutter speed slider does not move or is locked at minimum values, check whether the HDR or “Night” mode is turned on - they often conflict with manual time settings exposure.
In addition to shutter speed, in this mode you will need to adjust ISO (sensor sensitivity) and focus. For long exposures, it is recommended to set the ISO to a minimum (usually 50 or 100) to reduce digital noise. It is better to switch the focus to manual mode (MF) and set it to infinity if you are shooting landscapes, so that the camera does not try to refocus in the dark.
| Shooting scenario | Recommended shutter speed | ISO value | Required equipment |
|---|---|---|---|
| Car light traces | 2 - 10 sec | 50 – 100 | Tripod |
| Starry sky | 15 - 30 sec | 800 – 1600 | Tripod + timer |
| Silk water | 0.5 - 2 sec | 50 | Tripod, ND filter |
| Portrait in darkness | 1/10 - 1/4 sec | 200 – 400 | Support or stop |
Third-party applications for advanced settings
If the standard software of your smartphone does not allow you to set the desired exposure time or the interface is too limited, specialized applications come to the rescue. They get direct access to Camera2 API, allowing them to ignore restrictions imposed by the manufacturer. The leaders in this niche are Open Camera, ProCam X and a paid solution Manual Camera: DSLR.
The application Open Camera is completely free and open, which makes it an excellent choice to start with. After installation, go to the settings and make sure that in the “Camera API” section the value Camera2is selected. Then, from the main menu, click on the lock or exposure settings icon and select manual control. Here you can set the shutter speed in increments that are not available in a standard camera, and also enable the function DNG for saving pictures in RAW format, which is critical for subsequent processing.
More advanced users can use the application Manual Camera: DSLRthat simulates the interface of DSLR cameras. It allows you not only to control the shutter speed, but also to adjust the white balance accurate to Kelvin, and also use focus peaking for perfect sharpness.
⚠️ Attention: Some manufacturers (for example, Huawei or Honor on older firmware) block access to the full functionality of the Camera2 API at the software level. In such cases, even third-party applications may not see the possibility of setting a long shutter speed.
Technical limitations and working with noise
Increasing shutter speed on a mobile sensor has its own physical limits. Unlike full-frame sensors, small pixels on smartphones are prone to overheating and thermal noise accumulation over long exposures. This manifests itself as color dots (chromatic noise) and loss of shadow detail. Understanding the nature of dark current will help you minimize these artifacts.
To compensate for noise, many advanced algorithms use a dark frame subtraction technique. Its essence is that after the main shot, the camera takes a second frame with the shutter closed for the same duration, recording only the noise of the matrix, and then subtracts it from the main image. In manual mode, this function often needs to be activated separately in the application settings by finding the item Long Exposure NR (Noise Reduction).
It is also worth considering that when the shutter speed exceeds 15-20 seconds, some smartphone models may automatically turn off the power to the display or the camera itself to save energy. To avoid interrupting shooting at the most crucial moment, it is recommended to activate the “Keep the screen on” mode in the developer settings or use special utilities to keep the system active.
What are hot pixels?
With a very long shutter speed (more than 30 seconds), brightly glowing dots of the same color may appear on the matrix. These are “hot pixels” - defects that appear when heated. They are easily removed during post-processing or with the noise reduction function.
Necessary equipment for stability
Even the most advanced image stabilization (OIS or EIS) will not be able to compensate for the vibrations of the smartphone during a shutter speed of several seconds. Any micro-movement will turn point light sources into blurry spots. Therefore, the issue of fixing the device is paramount.
The ideal solution is a full-fledged tripod with a mount for a smartphone. If you don’t have one, you can use flexible mini-tripods (“octopuses”) that allow you to mount your phone on railings, tree branches or rocks. In case of emergency, a bag of rice or sand is suitable, in which you can drown the phone, giving it a stable position. The main thing is to exclude any contact with the device at the moment of releasing the shutter.
- 📸 Cable or timer: Use a self-timer for 3-5 seconds or a headset with a volume button as a shutter so as not to touch the screen.
- 🔋 External battery: Long shooting and using the screen in the dark quickly drains the battery, therefore, a power bank will not be superfluous.
- 🌑 ND filters: To photograph water or streams of people during the day, you will need a neutral density filter to reduce the flow of light and allow you to use long shutter speeds without overexposure.
Post-processing of images with long shutter speed
A raw file obtained with a long shutter speed often looks faded and requires improvement. Shooting in RAW format gives you the dynamic range you need to capture shadows and highlights. Applications Lightroom Mobile or Snapseed.
First of all, pay attention to the Luminance Noise Reduction and Color Noise Reduction tools. Gently increasing these settings will remove the grain that is common at high ISOs and long exposures. You can then raise the shadow exposure to reveal details hidden in the darkness, and slightly increase the clarity (Clarity) to highlight textures.
☑️ Checklist before night shooting
Do not forget that the white balance in night shots is often lost due to mixed artificial lighting. Adjusting the temperature towards cooler shades (blue) usually makes the cityscape more cinematic and pleasing to the eye, removing excessive yellowness from streetlights.
⚠️ Attention: Application interfaces and Camera2 API capabilities may vary depending on the version of Android and the specific device model. If you do not find the described settings, check the official documentation of the manufacturer of your smartphone or the support forum for a specific application.
Frequently asked questions (FAQ)
Why do my long exposure photos turn out completely white?
This is a sign of overexposure (overexposure). You set your shutter speed or ISO too high for your current lighting conditions. Try reducing the exposure time or reducing the sensor sensitivity to minimum (ISO 50). If you are shooting during the day, be sure to use an ND filter.
Is it possible to photograph the milky way with a regular smartphone?
Yes, this is possible if your smartphone supports a shutter speed of 15-30 seconds and has a fast lens (f/1.8 and below). You will need a very dark place away from city light, a reliable tripod and manual focusing on a bright star.
What is the difference between the “Night” mode and manual long exposure?
The “Night” mode is an automatic algorithm that takes a series of short frames and stitches them together, leveling out the brightness and removing noise. Manual slow shutter speed is one continuous frame (or emulation of one), which allows you to control the movement of objects (create trails), which the automatic mode usually does not provide.
Why do you need the RAW format when shooting with a long shutter speed?
Format RAW saves all the information from the matrix without compression and processing by smartphone algorithms. This gives much more freedom when correcting exposure errors and removing noise on a computer or in advanced mobile editors.
The main secret of high-quality night photography on a smartphone is not only a long shutter speed, but also a minimum ISO value combined with absolute stillness of the camera.