Hi, I've just released a beta version of my new Light Sensor app to the market. Seems to be going ok so far but I have gotten a comment from a Droid user complaining that it is "completely wrong on droid, keep working on it".
So I am!
Can a kind Droid dev install the app (called Photographic Light Meter, or download at www.tomreay.co.uk/LightMeterBeta.zip ) and do the following please?
1) Open the app
2) Press trackball centre/dpad centre
3) It should vibrate, a popup should appear and dismiss itself quickly and EV should update
4) Post here what happened, did it vibrate? Did EV update? What value did it give and what conditions did you try it in?
If anyone also has a DSLR or light meter could they do side by side comparisons in daylight, indoors etc? Would help me out loads!
Thanks
Tom Reay
Work perfectly
Sent from my Milestone
Azhad said:
Work perfectly
Sent from my Milestone
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Thanks for the testing, can you tell me what sort of values you where getting and what the lighting was like? (Light office, any natural light etc)
Thanks
Tom Reay
I'm a photographer and I can tell you that the values were way off.
The light sensor of the droid/milestone got like just 5 or 6 step, from 10 lumen to 3500 or so.
A better approaqch would be taking a photo with macro focus, no flash and fixed exposure, then you could extrapolate the median luminance from the B/W of the photo, and also the color temperature (and that wold be a killer app) form the rgb part.
Sent from my Milestone
Azhad said:
I'm a photographer and I can tell you that the values were way off.
The light sensor of the droid/milestone got like just 5 or 6 step, from 10 lumen to 3500 or so.
A better approaqch would be taking a photo with macro focus, no flash and fixed exposure, then you could extrapolate the median luminance from the B/W of the photo, and also the color temperature (and that wold be a killer app) form the rgb part.
Sent from my Milestone
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I agree, that would be a much better way of doing things, and my original idea. However the Android API does not allow it, I'm looking for a way of doing it, but until then the light sensor is the best bet.
Given your a photographer could you help me get it at least in the right ballpark so to speak?
Thanks
Tom Reay
tomfreay said:
I agree, that would be a much better way of doing things, and my original idea. However the Android API does not allow it, I'm looking for a way of doing it, but until then the light sensor is the best bet.
Given your a photographer could you help me get it at least in the right ballpark so to speak?
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Suer you can't? I've seen an app that use le camera in this way to calculate your bloodrate by extrapolating the change caused by the blood in the luminance of the finger pressed on the lens.
Sure I can help, is what this forum is for
Sent from my Milestone
I can ask my friend if he would like to test this app. As a photographer he would surely find it useful
Sent from my Milestone using XDA App
Azhad said:
Suer you can't? I've seen an app that use le camera in this way to calculate your bloodrate by extrapolating the change caused by the blood in the luminance of the finger pressed on the lens.
Sure I can help, is what this forum is for
Sent from my Milestone
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Found the app you mean, Instant Heart Rate, very cool app!
As far as I can tell though, it doesn't directly control the camera, just starts a preview and does some processing to work out luminescence. Might be possible to do similar to get the colour temperature. Lock the WB and work it out, ill have a look into this.
However it doesn't help for the light level. If you have any ideas then the help is very welcome!
As far as I understand mobile phone cameras have fixed apertures, so if the fixed aperture could be found, and the shutter speed used to take photo found, then it could be worked out from that. However shutter speed (or ISO for that matter) are not stored in the exif of photos on android.
Related
Overall, I really like the Inspire. However, one thing I noticed, was the lack of "super fine" mode for camera. It also appears to have some exposure issues, despite tweaking. Does anyone have tweaks for improving picture quality (via lowering any compression that may be present, displaying hidden modes, etc..)?
Colors seem all wonky on my camera, like over saturated or something.
Anyone else notice any blurred edges? For example, my pictures seem to be blurred near the top right of every photo. Before taking the picture it looks fine, but goes out of focus when the picture is captured. I've also heard of other people having this issue near the top left corner.
Sent from my HTC Inspire 4G using XDA App.
RacerX10 said:
Colors seem all wonky on my camera, like over saturated or something.
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I turned the "saturation" setting down to -1, seemed to resolve that issue.
blackviper71 said:
Anyone else notice any blurred edges? For example, my pictures seem to be blurred near the top right of every photo. Before taking the picture it looks fine, but goes out of focus when the picture is captured. I've also heard of other people having this issue near the top left corner.
Sent from my HTC Inspire 4G using XDA App.
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I have not noticed that issue on mine. However, the images do seem a bit grainy, which is hard to believe, considering it is 8MP. That leads me to believe there is jpeg compression taking place.
///M Class said:
I have not noticed that issue on mine. However, the images do seem a bit grainy, which is hard to believe, considering it is 8MP. That leads me to believe there is jpeg compression taking place.
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Mine only seem grainy in unnatural light. Outside in sunlight this thing takes the best pictures of any device I've ever owned. Note: I'm no photographer, so "any device I've ever owned" is very limited, as is my photography expertise. I'm happy with the camera on the Inspire though
My camera works perfect.
homeslice976 said:
Mine only seem grainy in unnatural light. Outside in sunlight this thing takes the best pictures of any device I've ever owned. Note: I'm no photographer, so "any device I've ever owned" is very limited, as is my photography expertise. I'm happy with the camera on the Inspire though
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I noticed when I was indoors setting ISO manually seems to work better than letting it set automatically. Sometimes it would be way too bright, sometimes too dark.
So what is the general impression about the camera? I've read and skimmed through a half-dozen reviews. Most say the camera is good, better than others, but all I really see is a blurry mess in the example shots. They also say the video is good, but I am not seeing that either. The brightness constantly changes and quivers and the video isn't very smooth or sharp. The audio recording is also very low quality and is my biggest complaint. This is in comparison to both a Samsung Galaxy S and Samsung Wave, which have pretty much the same cameras. And no I am not bashing the phone, because I might want to get it and like the other stuff like UI, alum body, natural-looking screen, etc. but am not to thrilled with the camera from the review pics/vids.
///M Class said:
I turned the "saturation" setting down to -1, seemed to resolve that issue.
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Much better, thanks !
///M Class said:
I turned the "saturation" setting down to -1, seemed to resolve that issue.
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Awesome! This really helps. Thanks for sharing.
Sent from my HTC Inspire 4G using XDA App.
The flash on my inspire has ugly green/teal hue. Anyone else noticed this?
Sent from my Desire HD using XDA App
knarfl1 said:
The flash on my inspire has ugly green/teal hue. Anyone else noticed this?
Sent from my Desire HD using XDA App
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This issue seemed to resolve itself after adjusting the saturation to -1. The other option is manually adjust the white balance to florescent.
///M Class said:
This issue seemed to resolve itself after adjusting the saturation to -1. The other option is manually adjust the white balance to florescent.
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Or, get a replacement. much better now. Even the sales Rep agreed flash was green.
Sent from my Desire HD using XDA App
Changing the iso when using the flash helps too. Took a bunch of pictures last week and most came out really good.
inspire 4g
///M Class said:
Overall, I really like the Inspire. However, one thing I noticed, was the lack of "super fine" mode for camera. It also appears to have some exposure issues, despite tweaking. Does anyone have tweaks for improving picture quality (via lowering any compression that may be present, displaying hidden modes, etc..)?
Click to expand...
Click to collapse
Hi, i guess the quality of the picture will be great if you can sent the camera settings as follow: while you are on the camera mode, select menu= image adjustments= increase the sharpness to the limit, drag saturation half way down, contrast half way up, exposure half way down. by doing this, you will love your shorts.
I think my lense is kind of broken, as I see a red halo in the center of every photo I take. It's really annoying, although the saturation -1 trick improved it a little.
In settings it has metering mode I know its for measuring light when taking pictures. But does anyone know if changing meter to average, center or spot makes a different in the distances for the camera from object or ppl. How to apply them properly I just want to take the best pics that this phone can.
htctp2-89 said:
In settings it has metering mode I know its for measuring light when taking pictures. But does anyone know if changing meter to average, center or spot makes a different in the distances for the camera from object or ppl. How to apply them properly I just want to take the best pics that this phone can.
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I've played a bit with them in average light conditions and didn't notice any impact. Probably me that I'm not a good photographer though.
(edit) whops, I assumed all cameras are the same, I have an Omnia!
andycted said:
I've played a bit with them in average light conditions and didn't notice any impact. Probably me that I'm not a good photographer though.
(edit) whops, I assumed all cameras are the same, I have an Omnia!
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lol. Its all good I'm no photographer either. I just want the best quality I can. HTC phones are known to have **** cameras
i just got htc one xl (international versionfor at&t) and everything is just superb. but wait here is a problem with my phone's camera the image quality is not awesome in low lights its average with some noise at the ends of picture now where is the BSI sensor result??and the major issue is that my phone looses its focus while recording video and when i press centre of phone's screen then it appears ok what the hell is this? is it a software problem or my phone is buggy
There's an international One X forum, go there. Some others may be having the same problem. Honestly, it just sounds like you're expecting too much from the camera in terms of low light. Try messing with exposure? The phone comes over exposed though already.
vioalas said:
There's an international One X forum, go there. Some others may be having the same problem. Honestly, it just sounds like you're expecting too much from the camera in terms of low light. Try messing with exposure? The phone comes over exposed though already.
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yes i am expecting too much because htc and gsmarena makes me to expect that too much impressive result by talking about f/2.0 and BSI sensor performance. i also used n8 and that was mind blowing result and camera phone. anyhow what about problem in focus while recording? any one have any idea?
It must be a faulty handset. I've taken shots in almost absolute darkness and still been blown away by the camera's low level light performance. Like someone mentioned it's already oversaturated out the box.
Sent from my HTC One X using XDA
shawn1224 said:
It must be a faulty handset. I've taken shots in almost absolute darkness and still been blown away by the camera's low level light performance. Like someone mentioned it's already oversaturated out the box.
Sent from my HTC One X using XDA
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And oversaturation is good for low light pictures right? Sorry, my camera knowledge is slim to none at best.
Sent from my HTC One X
The only thing can really help the low light photography is a large sensor. You need a sensor the size of APS-C or full frame 35mm to achive that. The pee sized sensor in all phones can never get what you want no matter what technological wonders they have.
Unfortunately, those larger sensor (and the larger lens) is impossible to embed into a phone.
I also have a problem with the camera where the pics are mostly too yellow. Is this a common issue and is there a fix? I can't fine RGB adjustment in the stock camera app. Is there a good 3rd party camera app that has this feature?
plau13 said:
I also have a problem with the camera where the pics are mostly too yellow. Is this a common issue and is there a fix?
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It happens when you shoot indoors with incandescent lamps as lighting. You need to manually change the white blance to Incadescent mode in camera settings.
It's a common issue for majority of the cameras out there.
n70shan said:
yes i am expecting too much because htc and gsmarena makes me to expect that too much impressive result by talking about f/2.0 and BSI sensor performance. i also used n8 and that was mind blowing result and camera phone. anyhow what about problem in focus while recording? any one have any idea?
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The continuous autofocusing does seem to be quite aggressive, resulting in the phone always searching for something to focus on. This may be what you're experiencing. Try turning off the Face Detection option in the cameras settings. Hopefully that helps!
The low-light performance of this camera is not mind-blowing. The overall image quality and abilities of the camera is, to me, quite spectacular. But take my word, and the word of reviews around the internet, with a grain of salt, as we are all speaking relatively. That is, understand that this is a pretty awesome camera for a camera phone. It's not an 808, n8, n9, nor is it your average point and shoot camera, which will have a large sensor and better image processing. But the HOX is capable of taking photos that compare to those types of devices.
fitchpuckman said:
The continuous autofocusing does seem to be quite aggressive, resulting in the phone always searching for something to focus on. This may be what you're experiencing. Try turning off the Face Detection option in the cameras settings. Hopefully that helps!
The low-light performance of this camera is not mind-blowing. The overall image quality and abilities of the camera is, to me, quite spectacular. But take my word, and the word of reviews around the internet, with a grain of salt, as we are all speaking relatively. That is, understand that this is a pretty awesome camera for a camera phone. It's not an 808, n8, n9, nor is it your average point and shoot camera, which will have a large sensor and better image processing. But the HOX is capable of taking photos that compare to those types of devices.
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ok fine but plz tell that whether galaxy s3 has better camera compared to one xl or one x?
The verge has a hands on review go read it
Make sure you're using Low light mode in the settings too and not just Auto.
gunnyman said:
The verge has a hands on review go read it
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where?plz give me link to that site?
http://www.theverge.com/2012/5/25/3042640/samsung-galaxy-s-iii-review
n70shan said:
ok fine but plz tell that whether galaxy s3 has better camera compared to one xl or one x?
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I can't tell you one way or the other. I have not used the S3 or really looked deeply into it's camera. I'm sure this would be something you'd want to look around the web for, to see if any sites have gotten a hold of an S3 to test it out.
Just read that the SGIII has the same camera as the 4S. Take it as you will, but I like that camera. However its the post processing in the software that will produce the end result.
Sent from my HTC One X using xda premium
After purchasing the Mi4c and waiting for it for three weeks, I keenly unboxed it and started tweaking the living hell out of it. Among others I installed several Google apps, the google account manager (switch off sync in China as it will draaaain your battery), and MIUI 5.10.16 dev. So far so good.
However, when I tried the camera, the online shots of which were very promising, I was so disappointed I ordered the Nexus 5X straight away. In any circumstance that isn't sunny, the rear-facing camera will perform horribly. What I mean is that, unless you stabilize the phone securely with two hands, any shot in a fluorescent light or otherwise slightly dim environment will result in heavy blur. As if you were shaking the phone while you took the shot. Comparing with the Nexus 5 (2013), where you could take a shot from your wrist while riding a bicycle and still have an acceptable result.
Can anyone else confirm? Do I have the worse of two sensors, is it just the tiny objective, or is it software-related? Or is it just what I should learn to accept from a 1500 RMB phone?
Hello mate,
this is what you should learn from a 1500 RMB phone, camera sux as soon as conditions are not optimum. Tried a lot of apps, but the results is still the same. Some apps will focus better though (lenovo super camera v5 for instance).
Nevertheless, a part from the camera, the phone is way better with CM12.1 than the nexus 5X which handle apps horribly again... Very slow to open and reload apps. Which is kind of a big deal.
upload some pics if possible..
let's see it...
Maybe the camera app just sucks hard? You should try others to compare...
These are all shot from the wrist with minimal effort at stabilizing, the way I used to snap pictures with my Nexus 5
Try to take a few indoor shots with a steady hand. It could be that the software uses a quite long shutter time, which results in a blurry shot if the hand isn't steady.
The second step would be: manually set the shutter time according to your preference.
Sure, steadying the phone entirely will work. But that's not really a solution, as you often take a quick snap, the device is light and therefore in almost all situations your hand will be unsteady. It felt like the nexus5 was able to use shorter shutter times in low-light conditions and took steady pictures almost all of the time.
potentially a software problem; after flashing CM Rom the camera improved significantly (also switched from N5 to 4C)
agreed, it got significantly better with the CM rom. Still fairly noisy and a little blurry though. Looks like the camera app (I use Google Camera 4.0) actually takes its time to focus rather than attempting to deliver the quickest shot possible.
bluppfisk said:
agreed, it got significantly better with the CM rom. Still fairly noisy and a little blurry though. Looks like the camera app (I use Google Camera 4.0) actually takes its time to focus rather than attempting to deliver the quickest shot possible.
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Can you check which sensor you have please
http://forum.xda-developers.com/mi-4c/general/camera-sensor-sony-samsung-t3213510/page4
ermacwins said:
Can you check which sensor you have please
http://forum.xda-developers.com/mi-4c/general/camera-sensor-sony-samsung-t3213510/page4
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He already has, yesterday
Maybe we can have some more samples from another camera app ? We know you have the Sony sensor now, it could be interesting to see if someone has a Samsung one and how is it different in picture quality.
Here are some, as your see low light ones aren't very good and blurred. But even the sunlight ones are a little grainy and not perfectly crisp. Sony sensor.
bluppfisk said:
Here are some, as your see low light ones aren't very good and blurred. But even the sunlight ones are a little grainy and not perfectly crisp. Sony sensor.
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Ok thanks ! And this is with the MIUI app ?
No the last batch was with CM
I created a post on official eu.xiaomi.com about this bug, if you can, please, confim in "bug" section of xiaomi mi4c
link?
http://en.miui.com/thread-180040-1-1.html
Inviato dal mio Mi-4c utilizzando Tapatalk
So, i'm really very confused now... someone says it is very great (e.g. http://forum.xda-developers.com/showpost.php?p=63730763&postcount=44) and you say it is bad and open a bug!
I would prefer great camera and battery over LTE band 20, but here i don't understand yet if mi4c have or not great camera... Can you please help me understand? Thanks
Well... Depends by user.. 50% say camera is awesome 50% not - You can see something like this on many phones
Hello,
So I received my all new HTC U11 3 days back ( in India) officially. HTC u11 has world's best rated camera but I am not quite satisfied with the results.
1.) Rear camera is really struggling to capture the photos in low light. I can clearly see the noise.
2.) Front facing camera has no OIS so pictures are blurry and most of the times I noisy photos.
Find the attachments below :
1.) Front facing camera
2 ) rear facing camera
See the noise and level of quality.
hm.. photo #1 has the plant completely out of focus. photo #2 has the pot in focus. you may wanna make sure that the subject is in focus before snapping.
did you change the camera settings to "Touch autoexposure"? The default mode of the camera is "Center-weighted"
Conan1986 said:
hm.. photo #1 has the plant completely out of focus. photo #2 has the pot in focus. you may wanna make sure that the subject is in focus before snapping.
did you change the camera settings to "Touch autoexposure"? The default mode of the camera is "Center-weighted"
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Thank you for replying. Let me make the things clear.
The first photo was taken from the selfie camera where I tried to focus on the plant/pot everywhere but it was not focusing anyhow. No matter what it wasn't focusing.
In low light, I can clearly see the noise in the all corners.
The selfie camera doesn't have auto focus everything is in focus ( as long as it is at least 18 inches away). Play around with the settings for the rear camera. HDR auto, HDR, so far all my photos are excellent focal point and background.
Conan1986 said:
hm.. photo #1 has the plant completely out of focus. photo #2 has the pot in focus. you may wanna make sure that the subject is in focus before snapping.
did you change the camera settings to "Touch autoexposure"? The default mode of the camera is "Center-weighted"
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schmeggy929 said:
The selfie camera doesn't have auto focus everything is in focus ( as long as it is at least 18 inches away). Play around with the settings for the rear camera. HDR auto, HDR, so far all my photos are excellent focal point and background.
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Well I have attached a sample selfie shot. Please check and tell me.
[email protected] said:
Well I have attached a sample selfie shot. Please check and tell me.
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Like I said you are too close using the selfie cam, it is meant too be an arm's long away to have everything in focus.
schmeggy929 said:
Like I said you are too close using the selfie cam, it is meant too be an arm's long away to have everything in focus.
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Sir I am not complaining about the focus and all... See the noise... Can't you see the noise in the picture?
Even zoom your spiderman... You will notice the same noise.
[email protected] said:
Sir I am not complaining about the focus and all... See the noise... Can't you see the noise in the picture?
Even zoom your spiderman... You will notice the same noise.[/Q
Adjust the iso manually
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Conan1986 said:
did you change the camera settings to "Touch autoexposure"? The default mode of the camera is "Center-weighted"
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Hi. Can you say more here or is there a link to how we can best make this adjustment? I'm not terribly savvy and appreciate the tips. Thx.
skypilotofhope said:
Hi. Can you say more here or is there a link to how we can best make this adjustment? I'm not terribly savvy and appreciate the tips. Thx.
Click to expand...
Click to collapse
Well, in the camera app, pull down the slider with the = icon, swipe to the right to reveal "Settings" which is on the left, tap on that and "Touch autoexposure" should be the first option.
This option is important if you tend to compose your shots with the subject not in the middle (rule of thirds) so tapping on your subject will adjust the exposure and focus according to your subject.
My low light shots are all at over 3000 ISO which leaves quite a bit of visible noise in the picture.
Not liking the camera in poor lighting just yet. Hopefully they will introduce an ISO limiter, or simply fix this in an upcoming update.
I also have a lot of noise in low light photos (rear camera). Automode just isn´t usable if you want to have nice low light photos. The pictures look like that of phones some years ago. Light sources are also always blown out a lot. I also think that the OIS of the U11 isn´t the best out there. So far I don´t really think that this is the best smartphone camera and I was hoping for a better camera performance. HTC told a german magazine in May that they want to deliver an update for the camera. But I don´t know if they really deliver or if this update was the small update of June (?) of the camera app itself. I did this update and nothing changed.
Camera is phenomenal with stunning low light performance.
Check one of mine in auto
IMAG0247 by xristos zerzis, on Flickr
Guys, I've been into photography for over 40yrs. - shooting at ISO 3000 will give you noise onless you're using one of the latest Pro or Prosumer cameras w/advanced sensors- the Nikon D5 / D500 are full frame cropped frame verions ef virtually the same camera in terms of auto focus, pic rendition, & yes, superlative results w/astronomical ISO's - which both support. This is a phone, not a prosumer or petter camera. 3000 ISO is gonna give noise. There are a number of companies that make post processing software specifically to help w/Noise. That nite shot the other fellow took is good work.
The phone is great. The camera is quite good. Deal w/the technical realities & don't expect the cellphone camera to deal w/noise like a Pro DSLR.
foxy4270 said:
Camera is phenomenal with stunning low light performance.
Check one of mine in auto
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That's great, but the ISO fired at only 1262.
Whenever I take a shot in similar lighting, auto mode uses ISO 3152, which means there will be a lot of noise.
Perhaps there are different software versions going around, because my phone has very poor low light performance in auto mode due to it using a far higher ISO than it should.
oldwolf613 said:
The phone is great. The camera is quite good. Deal w/the technical realities & don't expect the cellphone camera to deal w/noise like a Pro DSLR.
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I'm not expecting such a small sensor to handle ISO well - I'm expecting that the camera won't default to a ridiculously high ISO like 3152 where my previous Samsung S6 was happily snapping along at ~1000 with stellar results.
Yes, everyone knows that this isn't a DSLR. But when they claim to have the best smartphone camera around I expect better results. I also don't know why they use a smaller sensor than before... This phone goes for 749 Euro and the low light results often look like from an old S5 or iPhone 4. The Automode just isn't usable in this scenarios. If they deliver an update they could solve the issues, I guess.
Turn on pro mode and drop ISO..
rom116 said:
Turn on pro mode and drop ISO..
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And here in the first sample you can see what I mean with this weak OIS...
Zico, as someone else said go Pro mode & get lower ISO, & even if this phone's camera sensor is smaller than prev ones, - compared to a Pro(sumer) DSLR, this fone's cam compared to prev one vs.
DSLR is like the choosing pinch hitters who bat .249 & .253- the smaller fone sensor is just a bit less than the prev *slightly* bigger one- then there is the density of pixels & dynamic range that make for a good camera - Y am I still talking abt this?
Pro mode and manually selecting ISO is not a solution to a poorly tuned auto mode - it is a workaround that is barely tolerable.