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1. Hi, now I think most phone cameras have this problem, but I was just wondering, is there anything to do to change it? OK well it's basically light balance. On a cloudy day if I am taking a picture of something on the ground, and a bit of the sky is in it, it will be totally white. However if I point the phone to the sky it, shows the sky nicely but now the ground is close to black. This is very annoying and a lot of my pictures have white skies. This works the same for video so I made a film and uploaded it to show you what I really mean:
http://www.youtube.com/watch?v=es6-PJUUO_Q

What can I do to fix this sort of... Oh yeah this also happens when inside, if you point the phone to a wall the window is white and if you point it to the window the wall is now black.


2. How this is another problem I have. On my K850i, the flash has three options they are Auto, Red-eye reduct and Off. Unfortunately there is no 'on' option as I would sometimes like the flash to go off when the lighting conditions are good. How could I change this, I mean what I do now is trick it by covering it up so it thinks it is dark and then quickly taking the picture. Is there not an easier way? I have the very first firmware btw if that is anything important. Thanks for the help

[ This Message was edited by: adsada on 2008-09-24 15:23 ]

[ This Message was edited by: adsada on 2008-09-24 16:06 ]
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Posted: 2008-09-24 16:20:32
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Theres nothing you can do about the light metering maybe adjust the ev,
It is possible to mod the k850 camdriver to give it force flash.
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Posted: 2008-09-24 16:28:20
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First problem could be due to limited dynamic range because of small pixel size on camphone sensor... Adjusting EV could help a little bit...

If you want to get a broad dynamic range, use DSLR instead.

And I would recommend you to update your firmware... There is some noticeable differences...

Dunno about other better solution regarding force flash. Already mentioned by number1


Hiron
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Posted: 2008-09-24 16:39:04
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1. it's normal even for good digital cameras. sensor cannot 'see' dark and bright objects at the same time, it's all about luminosity of various objects. this was the source of HDR photography as a solution
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Posted: 2008-09-24 16:43:07
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It's not dynamic range it's light metering different brands & devices will have different light metering here's a example

sony ericsson c702
http://www.esato.com/phonephotos/viewphotos.php?pid=12746

samsung digi cam
http://www.esato.com/phonephotos/viewphotos.php?pid=12745
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Posted: 2008-09-24 16:48:18
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dude, what happened to your basic knowledge?

does C702 and Samsung digi cam have identical sensors and algorithms? is this strange for you that results for different hardware and software are different? it's not for me and I don't know what idea was behind this comparision

light metering? read it one more time:



not a dynamic range of sensor?
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Posted: 2008-09-24 17:15:39
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Hi, looks like you know the problem, but I might as well not let this video go to waste.
http://www.youtube.com/watch?v=es6-PJUUO_Q

So are there any tips on solving it, like changing the light balance?




What are the main changes you can tell, and how much different is the camera?


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Posted: 2008-09-24 17:18:26
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i never said the c702 & digi cam were anything alike lol, it's not strange they produced completey different results i was just showing different light metering in different devices the whole idea is that there very different.

pretty sure it's light metering

K800
http://i222.photobucket.com/a[....]d234/sniper100590/DSC00021.jpg

c702
http://i222.photobucket.com/a[....]d234/sniper100590/DSC00110.jpg

more simlar devices but the light metering is very still very .different
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Posted: 2008-09-24 17:29:30
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adsada
you cannot do much because it's hardware limit. you have only 2 tips which can help a bit

1. EV compensation
2. autoexposure (AE) lock

number1
you really don't understand much from described issue. maybe you should take a look at posted video? ok 2 questions for you:

what will happen if you will use high dynamic range sensor? will you be able to see ground and sky together without any problems?

if we "fix" light metering? will you be able to see ground and sky together without any problems?

_________________
K800 R1KG001
raider.4shared.com
flickr.com/photos/raiderek

[ This Message was edited by: Raiderski on 2008-09-24 16:42 ]
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Posted: 2008-09-24 17:32:47
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Yep, this is a hard one. The only real solution is HDR. Combining images also is pretty effective, but at the cost of dynamic range (compared to an original pic). HDR gives the dynamic range back plus some.

Sometimes Colour correction can help a little.

Otherwise, what I do is go as low as I can on the exposure to get blue skies, and so that the dark areas still show a reasonable amount of detail (even if it's darker than I'd prefer). It's about the best compromise I can think of. Then if you want to you can use photoshop to put a graduated contrast/brightness filter to bring out the detail in the foreground without whiting out the sky.
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Posted: 2008-09-24 17:52:24
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