Android camera set focus distance

Posted on 01.12.2020 Comments

To be a good photographer, it takes more than just a good camera. We've just added a couple of new tips for taking better sunset and party photos, plus an expert guide to bokeh effects. Before you get started with your smartphone camera, take a look at the settings. Frequently, the factory settings are not optimal.

Sometimes a lower resolution is set.

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Often, this provides for a better digital zoom — but you should also follow our advice below. It is also advisable to adjust the aspect ratio so that you get the largest possible picture. The screenshot below shows the format, because in the format, pages are truncated. With other smartphones, it can be the exact opposite: the format creates the largest photos, but the images cut off part of the picture. Afterwards, you can select the best image detail. Since high-definition pictures consume more memory space than those with low resolution, you should always have a microSD card — of course, this is only if your smartphone has the corresponding card slot.

If this is not the case, save your old photos and empty the memory before taking more pictures. Make sure the camera lens is free of dirt and fingerprints. Facial tissues are also good if necessary, but they sometimes leave behind fine and annoying dust. In photography, three values are relevant to the photo: exposure time, aperture, and ISO values. Together, they determine how brightly the photo is exposed, how sharply the background is focused, and whether an object in motion is blurred in the image.

Therefore, it is important for smartphone photographers to find the right settings for the ISO value and exposure time. In automatic mode, the camera determines these independently, but the manual mode often provides better and more precise results. However, this causes moving objects to create streaks. This effect can be used artfully for rivers or in night views of a city. Short exposure times, on the other hand, actually freeze a moment in time. This indicates the light sensitivity of the sensor.

The higher the value, the more sensitive. With a higher ISO value, you can, for example, shorten the exposure time and thus provide sharper pictures.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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Android Enthusiasts Stack Exchange is a question and answer site for enthusiasts and power users of the Android operating system. It only takes a minute to sign up. I know that you can tap on where to focus, but that's just assisted auto focus. What I want is to be able to manually adjust the focus. I couldn't find a way to do it or an app that would do it. There were a couple out there that claimed to have manual focus but basically just did what you described as "assisted auto focus.

I found this thread at XDA where some people have been looking through the code to find a way to add the manual focus. From what they found it appears that it is possible but someone has to code it.

The new API for full control of the camera on android had been added to android version 5. Google added these features like iso ,manual focus and etc in android lollipop.

I personally think to use this new API the camera hardware must support this features, However I didn't find any reference to claim this, but it makes sense to me that a hardware must be able to do such stuff. There is a free android app that allows you to manually adjust focus and more camera technical stuff for photographers Its called open camera and can be found on playstore.

To get straight to using manual focous: install, open settings, near bottom of page turn "use camera2 API" on, then in camera mode ready to take picture click the " Only 8 years later, the Moment Pro Photo app can now do this. May not be available for every phone, but it works as advertised on mine, specifically the manual focus. I use it frequently for sunsets and stage lighting. Sign up to join this community. The best answers are voted up and rise to the top.

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Home Questions Tags Users Unanswered. Can I manually focus the camera on my Android phone? Ask Question. Asked 9 years, 6 months ago. Active 1 month ago. Viewed 62k times. Is there any way to manually focus the camera on my Android phone?

Change the focal depth? Active Oldest Votes. Matt Matt 19k 11 11 gold badges 73 73 silver badges bronze badges. Hadi Aghandeh Hadi Aghandeh 1 1 silver badge 1 1 bronze badge. Your welcome. Rowan Rowan 21 1 1 bronze badge. Open settings in open camera or the phone? Thank you! The secret is in finding and using Camera2 API. Sign up or log in Sign up using Google.

Sign up using Facebook.W e are living in a generation where instead of carrying a full-fledged DLSR everywhere, we have access to a remarkable camera right in our pockets.

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Nowadays, many people rely on their smartphones as a primary device to capture videos and photos. All smartphones come with a pre-installed camera application. Thankfully, there are some great camera apps for Android in which carry the ultimate photography features and give you the shots you desire.

The Android app is primarily designed for photography enthusiasts and professionals. It provides you with full control over ISO, light-metering focus, white balance, shutter speed, etc.

The app is highly-featured and comes with an intuitive interface that is very easy to handle. Download Camera FV-5 Lite 2. However, kudos to the Android community, many have managed to develop Google Camera ports, which can bring the app on different Android devices. Some Android phones can also get recent Night Sight feature of Google Pixel 3, which enables users to capture great shots in the dark.

However, the GCAM app might struggle to deal with smartphones having multiple lenses as Pixel devices have only one lens. Also, for the app to work perfectly on your phone, you need to install the correct version of GCAM meant for your phone.

Download Google Camera 3. Camera MX. Camera MX is a full-featured Android camera app for that offers plenty of options for taking pictures.

android camera set focus distance

It gives you complete control over resolution and provides clear visuals that ensure sharp images. With Camera MX you can create animated photos and videos and add tons of effects, filters, frames, etc.

11 Free And Best Android Camera Apps For 2019

If you are looking to replace the stock camera app on your Android, this might be the best choice. The only drawback of this app is that it lacks a few DLSR features. Download Camera MX 4. Open Camera.

LENS_FOCUS_DISTANCE in android camera2 ?

Open Camera is a light-weight, fully-featured camera app for Android phones and tablets. It is completely free with no in-app purchases or ads. This Android Camera app has support for focus modes, scene modes, auto-stabilizer, HD video recording, handy remote controls, configurable volume keys, geotagging of photos and videos, support for an external microphone, HDR, dynamic range optimization mode, small file size, etc. However, what makes Open Camera a great contender for the best camera app for Android is its open-source nature that many people would love.

Moreover, the GUI can efficiently optimize for left or right-handed users. One little issue with this Camera app is its frequent inefficiency in focusing objects. Download Open Camera 5.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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I'm trying to read the focus distance distance of subject in a photo from an Android camera. I keep getting 0 for all focus distances on my HTC Desire even when it correctly autofocuses. Here's the whole app, only works on v2. Could it be that that there is a bug in the device driver? In the Android source Camera. Does anyone know where to get the source for the native calls? Unfortunately, "If the camera does not support auto-focus and autoFocus is called, onAutoFocus will be called immediately with a fake value of success set to true.

Probably its a bug in the camera driver you can only fix this if you set up you phone again, yes I know it really shitty, but I had exact the same problem too.

android camera set focus distance

But i choosed to use a custom rom for my device. Atm im using Android Revolution HD 6. For your secound Question you can take out the source file for the camera app from the package you download with the rom.

Probably if you change it, it will work. I don't know where you can get the source for the native calls. But what about getting 0 for all the focus distances in getFocusDistances float[] method, you can read this issue. There you can read that this error is not the error of the device but of the Android SDK. This is Bug - "Distances returned by Camera. First reported Jan 26, with the last report on Mar 18, Thus, the Bug was reported shortly before you ran into it and has not been fixed to this day.Definition of rational data type in ACameraMetadata.

Enum for describing error reason in ACameraCaptureFailure.

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The Android device may need to be shut down and restarted to restore camera function, or there may be a persistent hardware problem. An attempt at recovery may be possible by closing the CameraDevice and the CameraManager, and trying to acquire all resources again from scratch. The system-wide limit for number of open cameras or camera resources has been reached, and more camera devices cannot be opened until previous instances are closed.

All automatic control is disabled auto-exposure, auto-white balance, auto-focusand post-processing parameters are set to preview quality. The manual capture parameters exposure, sensitivity, and so on are set to reasonable defaults, but should be overriden by the application depending on the intended use case.

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Specifically, this means that high frame rate is given priority over the highest-quality post-processing. This template is guaranteed to be supported on all camera devices. Specifically, this means that a stable frame rate is used, and post-processing is set for recording quality.

Specifically, this means prioritizing image quality over frame rate. Specifically, this means maximizing image quality without disrupting the ongoing recording. This means means maximizing image quality without compromising preview frame rate. Aberration correction operates at improved quality but the capture rate might be reduced relative to sensor raw output rate.

Advanced white balance adjustments above and beyond the specified white balance pipeline may be applied.

android camera set focus distance

Color correction processing operates at improved quality but the capture rate might be reduced relative to sensor raw output rate. All advanced white balance adjustments not specified by our white balance pipeline must be disabled. The camera device will adjust exposure duration to avoid banding problems with 50Hz illumination sources.

The camera device will adjust exposure duration to avoid banding problems with 60Hz illumination sources. The camera device will automatically adapt its antibanding routine to the current illumination condition. This is the default mode if AUTO is available on given camera device. Auto-exposure lock is enabled; the AE algorithm must not update the exposure and sensitivity parameters while the lock is active.

Like ON, except that the camera device also controls the camera's flash unit, always firing it for still captures. Like ON, except that the camera device also controls the camera's flash unit, firing it in low-light conditions. If deemed necessary by the camera device, a red eye reduction flash will fire during the precapture sequence. It informs the camera device that an external flash has been turned on, and that metering and continuous focus if active should be quickly recaculated to account for the external flash.

Otherwise, this mode acts like ON. When the external flash is turned off, AE mode should be changed to one of the other available AE modes. The camera device will cancel any currently active or completed precapture metering sequence, the auto-exposure routine will return to its initial state.

When a camera device is opened, it starts in this state. This is a transient state, the camera device may skip reporting this state in capture result. In this mode, the lens does not move unless the autofocus trigger action is called.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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Hyperfocal Distance Focusing and Depth of Field Tricks

However, the property is always zero in AF mode. Is there any way to get focus distance in AF mode? Learn more. Asked 4 years, 10 months ago. Active 1 year, 6 months ago. Viewed 5k times. I'm working with Android camera2 API. Alexandre Marcondes 4, 2 2 gold badges 21 21 silver badges 30 30 bronze badges.

Active Oldest Votes. Shortest distance from frontmost surface of the lens that can be brought into sharp focus. If the lens is fixed-focus, this will be 0.

Francisco Durdin Garcia Francisco Durdin Garcia 7, 4 4 gold badges 32 32 silver badges 63 63 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.

CameraCharacteristics

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Sign in to your account. The API allows to set manual focus mode, yet, there is no way to set focus distance manually.

android camera set focus distance

Maybe API can provide interface for getting focus range values as well as setting focus distance value. I'd like to bump this and voice my support for this as well. What is the current use case of setting focusMode to manual if you can't then provide a focus value? What focus value will be used, the last value before it was changed from auto to manual?

I have a strong use case for this API, and it could more or less be a drop-in replacement if a manual focus value is added to the API. Without a way to set a manual focus value it is not very useful as I have a use case where the user calibrates the camera settings once sets zoom and focus value and those settings are reloaded every time the page is used to provide a consistent experience as far as zoom and focus go.

Currently this is accomplished in a hacky way by using WebSockets to talk to a server on the local machine which uses low-level APIs to set these values. The android. Camera API does. Closing since the conversation has moved to and its associated PR Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. New issue. Jump to bottom. Copy link Quote reply. This comment has been minimized.

Sign in to view. Add focusDistance constraint Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment. Linked pull requests.