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OffLineR Posts: > 500


On 2007-11-15 16:12:02, _LAU_ wrote:
The picture below is not a Hubble supernova photo, but an highly exagerated color enhanced photo of the lack of color precision of the P1 CMOS sensor.

Notice the green tint on the right and the magenta exageration on the center.





Great work _LAU_. This is exactly how the photos are affected.
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Posted: 2007-11-15 18:49:06
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liaoip Posts: 63

HELLO FOLKS!

I was preparing to send my unit in for the RMA I mentioned before, and thought it would be a good idea to flash it to world 1 and update the firmware. After that I thought it would be interesting to see if the green tint was still there. Strangely, it's not visible. THe green tint I had before was definately obvious but now it's either gone or barely noticable. ANYONE ELSE GET THIS AFTER DOING A WORLD 1 UPDATE? Don't tell me i'm the only one that lucked out....now hopefully if this picture attaches correctly you'll see what i mean.

Here's version infos
Phone: CXC162037 R9J005
Bluetooth: CXC162143 R1D
Organizer: CXC162108 R6F41
CDA: CDA162022/1 R6F38

A BEFORE PICTURE...you can see the green tint is pretty obvious starting half-way


AFTER THE UPDATE: Note that the green is pretty much not there. The slight color changes from left to right are actually pretty close to the real thing. Note that the top of the page looks slightly green, but that's because the green side of the rubiks cube is reflecting a bit (ironicly).


Here's another one. I don't see any green...do you?


[ This Message was edited by: liaoip on 2007-11-16 06:21 ]
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Posted: 2007-11-16 07:08:40
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OffLineR Posts: > 500

I have done the same thing and my tint stays there. You can found the picture a take one of the previous pages right after I flashed the phone.

BTW, the picture you take seems flawless but I think you should try to take a picture of a plain white or yellowish page(or light coloured wood)

If the tint still isn't there I'm going to update FW again
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Posted: 2007-11-16 07:20:33
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liaoip Posts: 63

Hmmm that's why I'm wondering what's going on. I'm pretty sure if the new firmware fixed the problem, people would've been jumping for joy already.

By the way, I am using a plain white paper. The first photo take after the Firmware update has a pinkish hue on the left...but I see that in real life also (which I can't figure out why since I don't really have a red source).

I took the second picture just to demonstrate the right hand side and thats with the whitest piece of paper I could find and DANG IS IT WHITE. On my screen it's so white it blends into the white border of the actual post. I can't tell where the border ends and the photo begins....

I'd like to see what others on the forum think about this strange firmware that only fixes the tint on some phones (o_O)

EDIT: Hmmm I need to investigate this further. It seems the green tint comes and goes depending on the lighting situation and the white balance that is chosen. This of course could just be the result of taking pictures in a not-so-well lit room. Still the green tint is much diminished. Gotta do some more testing.



[ This Message was edited by: liaoip on 2007-11-16 07:06 ]
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Posted: 2007-11-16 07:26:09
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G00gler Posts: 49

I have found one interesting thing. If I try to take a photo of a white paper from straight above without the flash the I get the green tint with the new firmware. I also found that this is actually due to the shadow from my right hand when I take the photo. I reality I can't see it much but because the paper is all white the camera tries to adjust the white balance so that there is some kind of contrast. This makes that slight shade go dark and green.

If I take a photo of the paper in a position when I will not case any shade with my hand (no matter how slight) I don't seem to get this tint. For instance when I hold the paper towards the ceiling and take a photo even without any flash I cannot see a tint at all.

I agree that with the old firmware there was probably more than that being the problem, but mine seems pretty good at the moment I think.
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Posted: 2007-11-16 09:15:31
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BratPAQ Posts: 56

actually this thread is making me see green tint everywhere, even on my screen monitor, or whenever i stare at a white paper or wall O_O







notice that on the 3rd picture, the white paper is white, although there are some discoloration on the black backpack, all is with same firmware and same lighting condition.
_________________
Reality is an illusion.

[ This Message was edited by: BratPAQ on 2007-11-16 15:04 ]
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Posted: 2007-11-16 15:54:12
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5nak3 Posts: 364

well i've not updated to the new firmware because i am not too confident with SEUS after one bricked phone. In any case i did find that if you up the brightness using the jog wheel, you can eliminate the green tint from a white object.

This may not be the best solution in all cases because you may over expose, but from what i saw with my tests, my green tint seems to come and go dependant on the shadow and the light of my surroundings, in daylight no green tint.

In my room which has a whitish cream wall, the green tint is evident, although the sunlight i get is not "clean" as i have curtains and the colour of the light is actually altered due to the curtain pattern.

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Posted: 2007-11-16 16:07:06
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_LAU_ Posts: > 500

Yes, this is evident when in the "A BEFORE PICTURE..." in the previous page.
The photo suffers from fluorescent light horizontal interference patterns, and on those you notice that the green tint is mostly visible in the darker horizontal lines. Go back there and you will se what I mean.
This means that, yes, more exposure=less green tint.
This camera sensor is a real junk imho.

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Posted: 2007-11-16 16:16:44
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jabbadabba Posts: 31


On 2007-11-16 15:54:12, BratPAQ wrote:



notice that on the 3rd picture, the white paper is white, although there are some discoloration on the black backpack, all is with same firmware and same lighting condition.


This is because the white area is blown beyond the dynamic range of the sensor. There is no information in those pixels at all
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Posted: 2007-11-16 17:27:35
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liaoip Posts: 63

What you say is very likely. I myself noticed that if the lighting is decent, the green tint is either gone or not evident in the new firmware (before the firmware the green tint was there regardless of the lighting). Also I've noticed that the green tint tends to show up more with dark photos with a lot of shadow and gradients. There also seems to be a slight pink hue on the left sides of my photo, though this is not readily apparent unless you take a photo of a white paper. I took some outdoor shots today and so far they look good. I'll make a post for you guys to see when I get back home.

One more thing...is it just me, or does the Auto White Balance do a better job then any of the other WB settings for their particular situation?
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Posted: 2007-11-16 23:19:50
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