Hi,
I am using Open Camera on a Pixel 4a. However the shutter speed isn't available for me. I have iso, aperture, white balance but no shutter speed...
Camera2 api is activated.
Thank you for any help.
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Anonymous
Anonymous
-
2022-05-18
Typically in mobile phones the cameralet does not have a diaphragm at all, that in camera objectives adjusts the diameter of the aperture. So, in cameralets there is not much of need to have a control for aperture, as it is only a hole with fixed diameter. In your devices the hole in the rear cameralet represents an f/1.7 aperture opening.
It seems to me that the app you are using is not the Open Camera app but only a rip-off that has tweaked Open Camera code.
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Anonymous
Anonymous
-
2022-05-19
Thank you for your reply. It is the officiel Open Camera app installed from F-Droid that I am using.
So, do you mean I can't change the aperture on my Pixel 4a (I am new to smartphone photography) and that it is an f/1.7 aperture opening for my device?
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Anonymous
Anonymous
-
2022-05-19
Hi, I have never seen the [-/+] dialog with red background, the same with the dropper icon. Also, missing shutter speed in Open Camera is odd when Camera2API is in use. Did you install from Google Play, or from F-Droid, or from this Open Camera account (mark-h) at sourceforge? My apologies if you really have The real McCoy, but it does not appears so. But, perhaps there is some issues with the OS version that your device has, Android 12. Google has the nasty habit of changing the behavior of many core functions from version to the next. Constant exasperation.
So, do you mean I can't change the aperture on my Pixel 4a (I am new to smartphone photography) and that it is an f/1.7 aperture opening for my device?
You wrote in the opening message: "I have iso, aperture, white balance but no shutter speed..." How did you came to the conclusion that you are able to change the aperture?
All cameralets that allow manual exposure do have a control for both the shutter speed and the ISO. in Open Camera the Camera2API needs to be selected in order to have manual exposure available (and you do have it so). Note that there seems to be shutter speed control literally visible in the landscape you posted above.
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Anonymous
Anonymous
-
2022-05-19
Thank you for your reply. I installed from F-Droid. I am using GrapheneOS on my Pixel 4a. I will try to install from another source tomorrow and will reply to your other points tomorrow too.
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Anonymous
Anonymous
-
2022-05-20
F-Droid has the original Open Camera app, no need to reinstall. Doing "Settings > Settings manager > Reset settings" does the same thing, but likely does not help here.
When posting about an issue, it is sensible to reveal the OS and its version, and not just the the model name, along with the alleged issue.
My guess is that if Open Camera does not work under the GrapheneOS then the issue lies in the camera interface of the GrapheneOS (that very likely is modified from the standard Android interface).
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Hi, so I uninstalled Open Camera and reinstalled from F-Droid and the red background disappeared. It is a mystery.
Could you tell me which settings I am playing with when I use the slider below the isos (please, see screenshot below)?
Thank you.
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Anonymous
Anonymous
-
2022-05-20
You are joking, right? Adjust it (towards left hand side, helps in this case) and just after the adjustment, for a very brief moment, Open Camera allows you to see the current value and unit of that control,. This information appears at the very center of the frame, in small font size, and with white font color, and with fully transparent background (it is a little difficult to discern e.g. when at that location, in the preview picture, there is a white subject surface).
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Anonymous
Anonymous
-
2022-05-20
Also, before taking a picture, in the preview, objects are surrounded by flickering white dots/lines (pleas see screenshot below),
how can I disable this behaviour? I didn't have this before...
Thank you.
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Anonymous
Anonymous
-
2022-05-20
They are: "Settings > Camera preview... > Focus peaking". This setting is OFF after clean install of official Open Camera. But in your app they are now on.
Also, the exposure is way off in the the situation that your screencapture represents. The official Open Camera does not produce such a dark frame from similar scene, in my experience (but I have no experience with Pixel mobile phones).
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Anonymous
Anonymous
-
2022-05-20
Ok, thank you for your help, my problem is solved then. I didn't understand that on a smartphone I couldn't change the aperture opening. As for the red background I have no idea what happened.
Also, the exposure is way off in the the situation that your screencapture represents.
It was just for the screenshot to show the "Focus peaking" that I set to on...
Have a good day.
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Anonymous
Anonymous
-
2022-05-21
Good to hear all is OK. Yes, there generally is no aperture control in mobile phone cameralets. Some rare models have been on market (by Samsung) that had adjustable aperture, sort of, they only had two apertures, an f/1.7 and an f/2.4, so a whopping half an f-stop in between them. Absolutely ridiculous feature, made available squarely for dumdums who buy tech by numbers. It is in several ways severely detrimental to image quality to further weaken the light path of the tiny cameralets by a diaphragm, and because the real/actual focal length is around 4.5 mm only, the depth of field is already huge with their fully open hole, so dimming in not deeded for the purpose of extending the DOF. Also, a mechanical structure having typical f-stops range down to e.g. f/22 by half stops, would be prohibitive because of the physical space requirements, and would be too power hungry.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Hi,
I am using Open Camera on a Pixel 4a. However the shutter speed isn't available for me. I have iso, aperture, white balance but no shutter speed...
Camera2 api is activated.
Thank you for any help.
Typically in mobile phones the cameralet does not have a diaphragm at all, that in camera objectives adjusts the diameter of the aperture. So, in cameralets there is not much of need to have a control for aperture, as it is only a hole with fixed diameter. In your devices the hole in the rear cameralet represents an f/1.7 aperture opening.
It seems to me that the app you are using is not the Open Camera app but only a rip-off that has tweaked Open Camera code.
Thank you for your reply. It is the officiel Open Camera app installed from F-Droid that I am using.
So, do you mean I can't change the aperture on my Pixel 4a (I am new to smartphone photography) and that it is an f/1.7 aperture opening for my device?
Also, I am surprised because I read an article (in French sorry): https://www.lesnumeriques.com/photo/prise-en-main-d-open-camera-1-35-reglages-manuels-et-format-raw-pu119555.html in which it seems to be possible to change the shutter speed (screenshot from the article) :
but as I said in my first post I have no settings to do that.
Hi, I have never seen the [-/+] dialog with red background, the same with the dropper icon. Also, missing shutter speed in Open Camera is odd when Camera2API is in use. Did you install from Google Play, or from F-Droid, or from this Open Camera account (mark-h) at sourceforge? My apologies if you really have The real McCoy, but it does not appears so. But, perhaps there is some issues with the OS version that your device has, Android 12. Google has the nasty habit of changing the behavior of many core functions from version to the next. Constant exasperation.
That is so, according to the https://www.gsmarena.com/google_pixel_4a-10123.php This is one of the drawbacks of (nearly) all mobile phone cameralets.
You wrote in the opening message: "I have iso, aperture, white balance but no shutter speed..." How did you came to the conclusion that you are able to change the aperture?
All cameralets that allow manual exposure do have a control for both the shutter speed and the ISO. in Open Camera the Camera2API needs to be selected in order to have manual exposure available (and you do have it so). Note that there seems to be shutter speed control literally visible in the landscape you posted above.
Thank you for your reply. I installed from F-Droid. I am using GrapheneOS on my Pixel 4a. I will try to install from another source tomorrow and will reply to your other points tomorrow too.
F-Droid has the original Open Camera app, no need to reinstall. Doing "Settings > Settings manager > Reset settings" does the same thing, but likely does not help here.
When posting about an issue, it is sensible to reveal the OS and its version, and not just the the model name, along with the alleged issue.
My guess is that if Open Camera does not work under the GrapheneOS then the issue lies in the camera interface of the GrapheneOS (that very likely is modified from the standard Android interface).
Hi, so I uninstalled Open Camera and reinstalled from F-Droid and the red background disappeared. It is a mystery.
Could you tell me which settings I am playing with when I use the slider below the isos (please, see screenshot below)?
Thank you.
You are joking, right? Adjust it (towards left hand side, helps in this case) and just after the adjustment, for a very brief moment, Open Camera allows you to see the current value and unit of that control,. This information appears at the very center of the frame, in small font size, and with white font color, and with fully transparent background (it is a little difficult to discern e.g. when at that location, in the preview picture, there is a white subject surface).
Also, before taking a picture, in the preview, objects are surrounded by flickering white dots/lines (pleas see screenshot below),
how can I disable this behaviour? I didn't have this before...
Thank you.
They are: "Settings > Camera preview... > Focus peaking". This setting is OFF after clean install of official Open Camera. But in your app they are now on.
Also, the exposure is way off in the the situation that your screencapture represents. The official Open Camera does not produce such a dark frame from similar scene, in my experience (but I have no experience with Pixel mobile phones).
Ok, thank you for your help, my problem is solved then. I didn't understand that on a smartphone I couldn't change the aperture opening. As for the red background I have no idea what happened.
It was just for the screenshot to show the "Focus peaking" that I set to on...
Have a good day.
Good to hear all is OK. Yes, there generally is no aperture control in mobile phone cameralets. Some rare models have been on market (by Samsung) that had adjustable aperture, sort of, they only had two apertures, an f/1.7 and an f/2.4, so a whopping half an f-stop in between them. Absolutely ridiculous feature, made available squarely for dumdums who buy tech by numbers. It is in several ways severely detrimental to image quality to further weaken the light path of the tiny cameralets by a diaphragm, and because the real/actual focal length is around 4.5 mm only, the depth of field is already huge with their fully open hole, so dimming in not deeded for the purpose of extending the DOF. Also, a mechanical structure having typical f-stops range down to e.g. f/22 by half stops, would be prohibitive because of the physical space requirements, and would be too power hungry.