[FIX] Camera green tint HTC One

[tgeza]

Anybody with a green tinted OV4688 camera - this is how to fix it:

ROOT + S-OFF needed (some even have permission problems with this setup, if that's the case try custom kernel like Elementalx, setting superCID or installing busybox)

1. Grab the below awb cal file from M8:

https://www.dropbox.com/s/is96whezfpj5jz4/awb_cal

2. In ES file explorer enable root browsing, then set permissions of /sys folder and /sys/android_camera_awb_cal/awb_cal file to write

3. Replace the file (OVERWRITE, not delete and then paste) , force stop camera, clear data, cache and done!

Important: whenever you reboot this has to done as the file gets then overwritten by the kernel at boot

*UPDATE* There's a permanent fix available overcoming the reboot overwrite, you can find it later in this thread

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[tgeza]

Sample shots before and after

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[b99721]

Sample shots before and after

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You get green tint only when using flash or at all times? I am seeing the green tint only with flash, and in certain light conditions - and the tint is not everywhere it seems but in certain parts of the pic (will upload comparisons soon). But replacing the calib file with the one you shared fixes it completely!
Plus the camera replacement is off center - from the back glass I can see the lens and even the flash module off towards the left side by about 1-2cm though it doesn't seem to impede clicking pics in anyway (just annoying to see it that ways).

 

[tgeza]

I used to get it often, in sunlight, low light, cloudy days. Didn't try with flash as i dont use it much. Also had those tints in parts of the photo, so i think i know what you mean. Still there now sometimes but it's negligable.

My camera is also slightly misplaced, I dont care though as the shots are fine.

Glad it helped btw!

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[b99721]

I used to get it often, in sunlight, low light, cloudy days. Didn't try with flash as i dont use it much. Also had those tints in parts of the photo, so i think i know what you mean. Still there now sometimes but it's negligable.

My camera is also slightly misplaced, I dont care though as the shots are fine.

Glad it helped btw!

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Seems with original calib file, images without flash are awesome (like they should be, especially in low light - outdoor the images appear over exposed), but with flash there is a green hue.

And with the downloaded calib file, images without flash in low light are grainy woth lot of noise and poor quality, but with flash they surpaas the quality of images shot with the original calib file.

So maybe I need to choose when to use flash (and thus replace calib file) and when not to - though I prefer not to use flash

With original calib file, with flash

With downloaded calib file, with flash

With original calib file, without flash (img 1)

With downloaded calib file, without flash (img 1)

With original calib file, without flash (img 2)

With downloaded calib file, without flash (img 2)

 

[tgeza]

Seems with original calib file, images without flash are awesome (like they should be, especially in low light - outdoor the images appear over exposed), but with flash there is a green hue.

And with the downloaded calib file, images without flash in low light are grainy woth lot of noise and poor quality, but with flash they surpaas the quality of images shot with the original calib file.

So maybe I need to choose when to use flash (and thus replace calib file) and when not to - though I prefer not to use flash

Whoa with the M8 awb I do get similar, though yellow tinted flash pics like you do with your *original* awb It seems ov4688s are not created equal and need their own calibration?

If you don't have overall green tints then in your case I'd just stick with the original awb!


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[Nightf0x_007]

i cant either backup my cal file or replace it with the new one .... my system is r/w

 

[tgeza]

i cant either backup my cal file or replace it with the new one .... my system is r/w

You have to set permissions of /sys/ and the file awb_cal to write in ES

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[Nightf0x_007]

You have set permissions of /sys/ and the file awb_cal to write in ES

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yes i did

 

[tgeza]

yes i did

Hmm do you have root browsing enabled?

Otherwise check out a post from a guy on page 451 of the below with more detailed instructions:

http://xdaforums.com/showthread.php?p=52615200


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[Nightf0x_007]

You have to set permissions of /sys/ and the file awb_cal to write in ES

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Hmm do you have root browsing enabled?

Otherwise check out a post from a guy on page 451 of the below with more detailed instructions:

http://xdaforums.com/showthread.php?p=52615200


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yes im rooted using viperone

 

[tgeza]

yes im rooted using viperone

Root browsing you need to separately enable in ES explorer, even if you're rooted. Otherwise im out of ideas

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[Nightf0x_007]

Root browsing you need to separately enable in ES explorer, even if you're rooted. Otherwise im out of ideas

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yes i enabled it , but dont know why its doing this

 

[sloaxleak]

Hello, I've a question. This is functional to purple-tint issue also? thanks.

 

[ericiidx]

Hello, I've a question. This is functional to purple-tint issue also? thanks.

No. The purple tint issue is a result of heat soak; the original camera sensor used in M7 production between roughly Feb - Sept '13 was either improperly insulated or susceptible to overheating, or both. It's purely a hardware issue that cannot be properly fixed through software (outside of forcing ISO 100 in all of your shots, which severely limits any advertised low light performance, and still likely doesn't fix the problem entirely.) If you have a valid warranty, the repair is free via HTC. Otherwise, HTC charges $90 for the part and service.

 

[b99721]

Whoa with the M8 awb I do get similar, though yellow tinted flash pics like you do with your *original* awb It seems ov4688s are not created equal and need their own calibration?

If you don't have overall green tints then in your case I'd just stick with the original awb!


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I upgraded to sense 6 without backin up my original awb calib file and now I hv grainy pics in low light. Tried restoring nandroid to get back the sense 5.5 file but that didnt work. Can you (or someone else here) please upload the original awb calib file from sense 5.5 rom for the OV4688 sensor. Need it badly.

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[tgeza]

I upgraded to sense 6 without backin up my original awb calib file and now I hv grainy pics in low light. Tried restoring nandroid to get back the sense 5.5 file but that didnt work. Can you (or someone else here) please upload the original awb calib file from sense 5.5 rom for the OV4688 sensor. Need it badly.

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They must have added the one from the M8.

This is mine from 5.5, although i guess you'll get a lot of tint:

https://www.dropbox.com/s/iqauqzl0l5llyhw/awb_cal55

In low light I also get a lot of grain btw, to remove it just switch to night mode

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[gustav30]

After getting the official Sense 6 build over the weekend, and I have the Omni ov sensor, I feel like green tint is worse, even in daylight now. Anyone experience the same? Just taking pics of trees, grass, green seems over abundant than on 5.5. Thoughts?

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[tgeza]

After getting the official Sense 6 build over the weekend, and I have the Omni ov sensor, I feel like green tint is worse, even in daylight now. Anyone experience the same? Just taking pics of trees, grass, green seems over abundant than on 5.5. Thoughts?

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I didn't get Sense 6 yet but I had the daytime green tint in 5.5 - the M8 awb solved it though. Did you try that already?

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[gustav30]

I didn't get Sense 6 yet but I had the daytime green tint in 5.5 - the M8 awb solved it though. Did you try that already?

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Thanks.
Gonna give it a shot today. I've set write permissions on the sys folder and the file, but no luck copying yet. First I want to make a backup of my existing file. Can you post a screenshot of the permissions you've set on the folder and file?

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