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can Mozart's Xenon flash serve as flash light? I read some review that LED can stay on but a xenon can't since it's like digital camera flash, it fires once after it has sufficient charge. To those people with units, can clarify on this ?
I don+t have the unit, but flashlight app from HTC is not available on the Mozart (check HTC website for instance). I don't now if 3rd party flashlights will allow this, but what i know is that xenon flash must not stay on because its powerful that LED and eventually may burn the flash... So LED may be used for flashlight, but xenon no.
No, it cannot. I bought a powerful LED light from DealExtreme for my keychain to use as a replacement as I was used to the HD2 LED flashlight
There are a few apps for the HTC 7 Mozart. But they only make the screen bright! In my oppinion thats pretty useless...
Yeah, Xenons cant light up permanently. They physically just cant.
And using its display as flashlight sucks.
I read that the flash can only be used for short periods of time as its an Xenon bulb and will burn out if used for to long.This would also explain why know one has made an app for this. The screen light apps are no good but thats not the fault of the app makers as if they could do some thing with the flash im sure they would do. Its almost as important to have a touch as it is a alarm these days and we have all kinda come to expect it. Hope this helps.
The xenon flash is driven by a flyback converter (in the same manner as a capacitor, sort of) running voltage of around 200 - 300v, as the naked battery power isn't capable on it's own... The reason it can't be used as a flashlight is basically due to the converters recovery rate...
kabumm said:
Yeah, Xenons cant light up permanently. They physically just cant.
And using its display as flashlight sucks.
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so how does modern cars use xenon lights ?
breakbystealth said:
I read that the flash can only be used for short periods of time as its an Xenon bulb and will burn out if used for to long.This would also explain why know one has made an app for this. The screen light apps are no good but thats not the fault of the app makers as if they could do some thing with the flash im sure they would do. Its almost as important to have a touch as it is a alarm these days and we have all kinda come to expect it. Hope this helps.
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true, its kinda important, all i ever read was how awesome the xenon flash is but never a word about its disadvantages untill i got one. well i can live without light, always got a lighter, or consantly take pictures like in some horror movie for light
then i read this nice mozart review and about the camera
http://www.missuall.com/htc-mozart-2/
The xenon flash on the Mozart is a bit of a joke. First of all it is too weak and is only usable in low light at a short distance. Attempts at using it as a fill flash with day light were met with spectacular failure. Apart from being weak, there are also three more reasons why the flash fails to perform adequately. First, there is no focus assist that would help the camera focus in pitch darkness, which means your images would come out of focus. Surprisingly though, it worked quite well in low-light.
Secondly, the camera cannot judge the distance of the subject from the camera and modulate the intensity of the flash. Objects that are closer often get washed out when shot using the flash. Lastly, Windows Phone 7 is not optimized for a xenon flash but an LED flash, which means it uses a slower shutter speed, which does not work well with a xenon flash.
Since the shutter is open longer than the duration that the flash is active, the camera is unable to freeze the action the way you are used to seeing on other xenon flash enabled cameras. This is similar to the slow synchro mode that some cameras have where the shutter speed is reduced to allow more light in, except on the Mozart, that’s the only option you have.
We also had issues with the accelerometer on the phone, which annoyingly recorded the orientation of the images incorrectly. Even when we were holding the phone perfectly horizontal it would save the images in portrait mode, upside down. Because of this, we always had to make sure the camera is perfectly straight before taking an important shot, lest we took our pictures upside down.
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so i think in future the xenon flash can and will be supported by apps and then it will totally rock!
WetSpot said:
The xenon flash is driven by a flyback converter (in the same manner as a capacitor, sort of) running voltage of around 200 - 300v, as the naked battery power isn't capable on it's own... The reason it can't be used as a flashlight is basically due to the converters recovery rate...
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sounds like you got some internal knowlege about, so is it possible to flash with the xenon more then one time ? how long is the recharge time, how many times can you flash in lets say 10 sec? if u cant make it always on, try to make it flash 24 times a sec i kinda think it wont be possible, but then cant we have multi-shot pictures? i wish i could view in future
webwalk® said:
so how does modern cars use xenon lights ?
xenon lights use a ballast to constantly supply the required power demands of the light, vehicles have an inexhaustable power supply for this process...
true, its kinda important, all i ever read was how awesome the xenon flash is but never a word about its disadvantages untill i got one. well i can live without light, always got a lighter, or consantly take pictures like in some horror movie for light
then i read this nice mozart review and about the camera
so i think in future the xenon flash can and will be supported by apps and then it will totally rock!
sounds like you got some internal knowlege about, so is it possible to flash with the xenon more then one time ? how long is the recharge time, how many times can you flash in lets say 10 sec? if u cant make it always on, try to make it flash 24 times a sec i kinda think it wont be possible, but then cant we have multi-shot pictures? i wish i could view in future
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The phone flyback converters are produced pretty much with two goals in mind:
1. be small enough to fit into the case...
2. supply the demands of a low-tech, low demand camera...
I think even if you could overcome the dependance of the flash to recover only in line with the frame rate of the camera, the battery would not be sufficient to run it as a torch/flashlight for long...
jtphl said:
I read some review that LED can stay on but a xenon can't since it's like digital camera flash, i
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So we can't use the xenon flash also during video... grrr
This is one reason I am strongly considering the cheaper Trophy over the Mozart. The Mozart has a better build but if you plan on doing anything involving flashlight capabilities then you will be better off with a Trophy.
You could buy an external keychain light but to hold that and keep the phone steady will be a task.
So I pre-ordered last night at my local at&t store. I am excited as before I went to my at&t store I passed by best buy to hold the dummy model they have. Its big but I was still able to thumb the other side of the device with one hand. I also played with the samsung player which has a 5" screen and runs android but I guess thats just suppose to be an mp3 player, either way it looked similar to the note and it looked great. I can imagine how good the note's display will look.
The only thing right now that is bugging me a little is getting by with no led notification. Can you guys suggest how to get over that little led light that will no longer be on the note? Or how you guys with devices with no led lights are coping?
there is a app that you can get and its free called no led.. My wife had the same issue as she was used to a led light and when she got her samsung she missed it.. works well
But that requires your screen to turn on so basically killing the battery right? I know some samsung devices have that bln mod but not sure how well that works and if its even compatible with the lte note. Any led camera flash apps maybe?
no it puts a small icon that lights up on your screen and bounces around. the rest of your screen is dark.
Camera flash? For notifications? Seems to me that would kill that battery way faster than 64 pixels floating around the screen . . .
SysAdmNj said:
But that requires your screen to turn on so basically killing the battery right? I know some samsung devices have that bln mod but not sure how well that works and if its even compatible with the lte note. Any led camera flash apps maybe?
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What does it really mean to "turn on the screen" for the Samsung AMOLED displays? LCD-based displays need a backlight, even when displaying a single pixel. But turning on just a few LED pixels on a Samsung AMOLED display is probably a very low power operation, since only active pixels should need to be powered, and since there is no backlight.
I haven't had an LED notification for years. And I am thankful that I don't. I remember on BB when I had the LED notification, I was constantly looking at my phone to see if the light was beeping. Without it, I'm so much less obsessed with seeing if I have that stupid blinking light.
@bkeaver - I thought it required the screen to be on
@LiquidArrogance - I've seen the iphone do it like that with a case
@vaxheadroom - Then I definitely am not sure the difference between lcd and AMOLED displays
@kiltedthrower - I'm still obsessed no thanks to the blackberry days
here is a link to the app.... should give you a idea of how it works and what it looks like
https://market.android.com/details?id=com.led.notify
SysAdmNj said:
But that requires your screen to turn on so basically killing the battery right? I know some samsung devices have that bln mod but not sure how well that works and if its even compatible with the lte note. Any led camera flash apps maybe?
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Once a kernel is developed that supports bln which I imagine will be fairly quickly, it will be available. And it works very well, I use it on my captivate all you have to do is install the bln supporting kernel, download the app, set up what apps turn on the leds and you're done.
emcnelly said:
Once a kernel is developed that supports bln which I imagine will be fairly quickly, it will be available. And it works very well, I use it on my captivate all you have to do is install the bln supporting kernel, download the app, set up what apps turn on the leds and you're done.
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Is it a strain on battery at all? Or does noled work better in regards to battery life?
Hello, samsung disabled some options in camera in most of the shooting mode or scenes,I searched pretty much everywhere and I couldn`t find some useful information.Is really annoying that they did.For example,in a low light situation if I use the flash, 2-3 m in front of the camera will look very good but everything else will look bad, if I use the low light shooting mode, everything will look good but if I would use low light shooting mode + flash, 2-3 m in front of the camera will look very good and everywhere else will look good(perfect).Also the burst mode is pretty usefulness in good light situations as you would have to be drunk to take a blured picture but with the low light shooting mode where is very likely to get a shaky picture would be great to take at least 2-3 photos fast(even if not so fast as in normal mode) so you could be sure that you have at least 1 good picture.The examples can go on and I don`t think that I`m asking for something impossible.Did someone modded the camera app as stated above or is there any possibilty in the near future to see some of those useful options?Thank you in advance.
so not a single chance to accomplish what I want?
nobody can understand what you mean.
Wall of text is horrible
somebody on XDA posted a guide on enabling the option to switch the camera shutter sound on/off by editing the feature.xml file under /system/app/
may be you need to try something similar
but be very careful when you edit such files.
Glebun said:
nobody can understand what you mean.
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I mean that if you choose from shooting mode the "low light" or HDR or a lof of options, flash is AUTOMATICALLY disabled or you can't use the burst shoot with low light option enabled or HDR, that`s what I`m talking about.Is it possible to trick the camera software to be able to use all the options along?
You need to search and read the various camera mods and decide .
jje
saddameu said:
I mean that if you choose from shooting mode the "low light" or HDR or a lof of options, flash is AUTOMATICALLY disabled or you can't use the burst shoot with low light option enabled or HDR, that`s what I`m talking about.Is it possible to trick the camera software to be able to use all the options along?
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There is a reason why these options can't be used with each other.
1. low light mode is supposed to take into account that there is very little light. If you turn the flash on with low light mode then you're essentially not using low light mode anymore because flash provides loads of light.
2. HDR mode takes 2 shots (3 on some devices) with different exposures and then combines the 2. If flash is involved the 2 shots will pretty much look the same and will therefore mean HDR is useless.
3. Burst shoot takes loads of photos simultaneously and if flash is enabled the first shot will usually be taken with flash. The device simply cannot handle the flash being used up to 20 times one after another.
If there is software out there to "trick" the camera into being able to do what you describe, it won't make a positive difference to your photos. It's general photography and the way cameras and their features work that make what you want to happen, a bad idea!
Rar3 said:
The device simply cannot handle the flash being used up to 20 times one after another.
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that part is not true. You can use Torch in strobe mode, which flashes the flash (sounds stupid, sorry) at like 50Hz
Rar3 said:
There is a reason why these options can't be used with each other.
1. low light mode is supposed to take into account that there is very little light. If you turn the flash on with low light mode then you're essentially not using low light mode anymore because flash provides loads of light.
2. HDR mode takes 2 shots (3 on some devices) with different exposures and then combines the 2. If flash is involved the 2 shots will pretty much look the same and will therefore mean HDR is useless.
3. Burst shoot takes loads of photos simultaneously and if flash is enabled the first shot will usually be taken with flash. The device simply cannot handle the flash being used up to 20 times one after another.
If there is software out there to "trick" the camera into being able to do what you describe, it won't make a positive difference to your photos. It's general photography and the way cameras and their features work that make what you want to happen, a bad idea!
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1 if you've ever played with light settings on a dslr, you'd know cranking up ISO, low shutter speed, exposure, etc will give you such a high exposure you can't even make the picture out.. all you see is a white light.. I feel this is what would happen.. its like shining a flashlight on something during night vision, all you see is a huge white spot.. does that make sense?
its not a software limitation its just the way modern lens work.
2 agreed
3 the flash can stobe 20 or so times a second, any 'flashlight' app will show you this.. you could also leave the flash simply on..
the best workaround ffor this is use 1080p video mode with flash, it takes 30 frames (shots) a second, and while watching the video there's a camera button on screen in the stock video player. best workaround.
and yea mods will come
Sent from my GT-I9300 using xda app-developers app
soraxd said:
1 if you've ever played with light settings on a dslr, you'd know cranking up ISO, low shutter speed, exposure, etc will give you such a high exposure you can't even make the picture out.. all you see is a white light.. I feel this is what would happen.. its like shining a flashlight on something during night vision, all you see is a huge white spot.. does that make sense?
its not a software limitation its just the way modern lens work.
2 agreed
3 the flash can stobe 20 or so times a second, any 'flashlight' app will show you this.. you could also leave the flash simply on..
the best workaround ffor this is use 1080p video mode with flash, it takes 30 frames (shots) a second, and while watching the video there's a camera button on screen in the stock video player. best workaround.
and yea mods will come
Sent from my GT-I9300 using xda app-developers app
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Yeah I agree I guess what I was trying to say is it would render low light mode useless. It would be one of those options that produces shockingly bad photos.
I forgot about the strobe, although I can't imagine this being a feature. I forgot that these "flashes" are just LEDs and not the traditional flash you get with an SLR.
The 1080p video mode is a great workaround suggestion. I hope saddameu can get something from this information.
@Glebun stop picking on me
saddameu said:
Hello, samsung disabled some options in camera in most of the shooting mode or scenes,I searched pretty much everywhere and I couldn`t find some useful information.Is really annoying that they did.For example,in a low light situation if I use the flash, 2-3 m in front of the camera will look very good but everything else will look bad, if I use the low light shooting mode, everything will look good but if I would use low light shooting mode + flash, 2-3 m in front of the camera will look very good and everywhere else will look good(perfect).Also the burst mode is pretty usefulness in good light situations as you would have to be drunk to take a blured picture but with the low light shooting mode where is very likely to get a shaky picture would be great to take at least 2-3 photos fast(even if not so fast as in normal mode) so you could be sure that you have at least 1 good picture.The examples can go on and I don`t think that I`m asking for something impossible.Did someone modded the camera app as stated above or is there any possibilty in the near future to see some of those useful options?Thank you in advance.
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I hope English is not your first language
That being said you are probably asking for slow-sync flash - as far as I know the S3 does not have that feature yet.
you have some good points but you took the worst combinations ever.
How can you say that is not good to take a pictures with low light enabled + flash?We are not talking about a dslr flash.If you take a picture of someone being 3-4 m away in low light conditions with flash ON it would be a better picture than taking it only with low light mode or only with flash,think about it, it will just make the person look better as the flash is not that strong to make the subject look too bright.
That is one good combination, another one could be using the burst shot with low light enabled to be sure that you take at least 1 good picture as you have to be very steady even if the burst shot would be slower in low light mode than a normal picture.I could probably take only 1 good picture in low light mode knowing the phone but if you give the phone to a friend,for example, the picture will look like it was taken from a drunk men.
Could you provide me some links with some good camera mods as I only found only hyperx`s mod.
And no, english is not my native language , I learned it pretty much by myself as in school I learned english for only 2 years but the first post was made being in rush.
Thank you,
It's probably already known by everyone that this phone packs an RG notification light (damn you, ZTE!) What's more, blinking seems to be fixed to solid and slow blinking, and it can only display RED , ORANGE and GREEN.
But, at least on ResurrectionRemix, there seems to be a way to turn on the two LEDs that we actually have with the console, and with a desired brightness:
su
echo 255 >/sys/class/leds/red/brightness
255 is the maximum brightness, but it ranges from 0 to 255.
Also, we can do a very nice shade of yellow using:
echo 255 >/sys/class/leds/green/brightness
echo 64 >/sys/class/leds/red/brightness
There are also a bunch of other parameters inside, but brightness is the only one I tested so far. I think we could use this to control the LEDs via a root-enabled app like LightFlow. Is it possible? It would improve a lot the LED quality.
Yellow would be nice. Maybe if you contact the Appflow dev he could make it work. However i'm not sure I want to install an app just to add 1 color
XblackdemonX said:
Yellow would be nice. Maybe if you contact the Appflow dev he could make it work. However i'm not sure I want to install an app just to add 1 color
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not just colors, in theory... Blinking speed is theoretically changeable, but it is somehow hard-coded and only blinks slowly for some reason. I'm not even sure if it can be just solid when triggered by a notification
There are a bunch of files inside the red and green led folders, and I guess they are what controls the LEDs flashing speed and all. I say "guess" because maybe they are simply ignored and the blinking speed is hard-coded. But whatever the case is, it seems possible to at least turn the LEDs on via shell scripts
Choose an username... said:
not just colors, in theory... Blinking speed is theoretically changeable, but it is somehow hard-coded and only blinks slowly for some reason. I'm not even sure if it can be just solid when triggered by a notification
There are a bunch of files inside the red and blue led folders, and I guess they are what controls the LEDs flashing speed and all. I say "guess" because maybe they are simply ignored and the blinking speed is hard-coded. But whatever the case is, it seems possible to at least turn the LEDs on via shell scripts
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Files inside the folder:
I found it extremely disappointing that ZTE gave us only RG lights on the non-Chinese version (I heard the Chinese version has RGB?). For diodes so cheap, I am only led to believe it must have been a manufacturing error on their part. Don't get me wrong, we get more than enough for the price and specs of this beast of a device, but how hard could it be to get RGB LEDs on this device? I really miss multicolour notification lights. This green-red-orange thing gets boring rather quickly.
KwesiJnr said:
I found it extremely disappointing that ZTE gave us only RG lights on the non-Chinese version (I heard the Chinese version has RGB?). For diodes so cheap, I am only led to believe it must have been a manufacturing error on their part. Don't get me wrong, we get more than enough for the price and specs of this beast of a device, but how hard could it be to get RGB LEDs on this device? I really miss multicolour notification lights. This green-red-orange thing gets boring rather quickly.
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I really miss the RGB led too. I never know when my notification is important or not.
XblackdemonX said:
I really miss the RGB led too. I never know when my notification is important or not.
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Yeah, bro. Coming from a One M8 with the same RG lights (used for about 2 years, previously a Nexus 5 which was RGB), you would understand
Most smartphones nowadays come with LEDs for the camera.
A lot of ROMS (stock and custom) provide a switch where these LEDs can be used as a flashlight.
Is it safe to use the camera LEDs as flashlight, on all ROMs, on all Devices? (generally said)
Is it safe to do so for a longer time?
Are there ROMs tweaked in a way the LEDs are brighter than normally and therefore having them on for some time will cause damage to them, because it is outside their normal operating voltage? Or are the LEDs limited in voltage/current hardwareside, so that longer use does no harm? (again, generally said)
If not, how do I find out, if the LEDs on a specific device can be used as a flashlight for longer time?
I am asking these questions not for a specific device, but in general.
I'm basing this answer on high beam torches.
The LEDs I would presume are built to be used quite a lot, especially on modern smartphones with high end cameras.
The LED will only go up to a set brightness that is set by the microchip it's connected to, and it will just stay on till the phone battery goes dead or you switch it off yourself, so unless you had phone connected to say a 50000mh powerbank, and left the LED on full and kept doing it none stop, which would eventually wear out the LED, for an hour or two here and there really can't see it being an issue.