Welcome to Esato.com




C901 Dead pixels on camera


Click to view updated thread with images




Posted by pavithra_uk
Today I brought a used C901. works perfectly. but When I take photos on low light / black I can see few white dots on the viewfinder. these dots also can be seen in photo. (bit blurred due to compression/post process)
dot places are permeneant. its look like dead pixels (or hot pixel)
[ This Message was edited by: pavithra_uk on 2011-01-26 07:55 ]



Posted by Kirankj1724
could u post link to such photos?

Posted by pavithra_uk
this photo taken completely dark (camera lens covered)


[ This Message was edited by: pavithra_uk on 2011-01-26 11:32 ]


Posted by pavithra_uk
will it get worse with time ?
there are many tiny dots when long exposure photos.

Posted by pavithra_uk
number of white dots increase with exposure time. there are many dots long exposure photos

Posted by Kirankj1724
strange noticed de same even with my C901


Original

Posted by pavithra_uk

On 2011-01-28 19:42:08, Kirankj1724 wrote:
strange noticed de same even with my C901


Original


exactly same as me.
how much old your phone ?


Posted by plankgatan
every phones has 2 year warranty....so as you

Posted by Kirankj1724
more dan a year old. don't remember wen i got it

Posted by pavithra_uk

On 2011-01-29 08:28:37, plankgatan wrote:
every phones has 2 year warranty....so as you



I brought a used phone. no warranty.

Is SE has a warranty policy for Dead pixels in camera ?

Posted by Kirankj1724
i dont think so.. and BTW all de pics from my C901 are really great.. so i feel nothing to worry about.. do u hav any prob wen u take pics normally?

Posted by pavithra_uk

On 2011-01-30 17:32:52, Kirankj1724 wrote:
i dont think so.. and BTW all de pics from my C901 are really great.. so i feel nothing to worry about.. do u hav any prob wen u take pics normally?


no problem at all. there are no dots in daylight photos. my phone already has 4 dead pixels in camera. they are fixed. even they appear in daylight photos too. but it very dificult to see them.

problem is night photos (with long exposure, dark area) because there are these white dots everywhere.

Posted by plankgatan
.....(cost just about £40-45)

link: http://www.mobilrep.se/Article.aspx?m=279309 (use google translate)



Posted by pavithra_uk


Every C901 suffer from this problem. with different level of intensity of dots. these dots can see easily if you adjust levels of photo with photo editor.

Its like Blue/red lines in ELM........

Posted by pavithra_uk


even this one has these dots. see dark areas carefully.

Posted by mriley
I don't think it's a problem at all, no sensor is perfect and C901 is definitely much much better than Elm at night shots

Posted by pavithra_uk

On 2011-02-02 16:32:32, mriley wrote:
I don't think it's a problem at all, no sensor is perfect and C901 is definitely much much better than Elm at night shots



agreed. Elm's night photos poor. & blue/red line issue. question is will these dots can increase ??



Posted by mochuothp
i took this with flash on the sky
did i have these dots ?


Posted by Kirankj1724
dats so clean
no white dots at all

Posted by mochuothp

On 2011-02-09 18:24:12, Kirankj1724 wrote:
dats so clean
no white dots at all


so how about this ?
i see it normal but pavithra_uk does not


On 2011-02-02 15:04:11, pavithra_uk wrote:


even this one has these dots. see dark areas carefully.


Posted by pavithra_uk

On 2011-02-09 18:17:37, mochuothp wrote:
i took this with flash on the sky
did i have these dots ?




this photo have no dots. but you may see if it in original size. (5MP res)


did checked the xif data ?. photo is taken shutter speed of 1/125s. these dots appear with low shutter speeds.

try to take photo as twelight landscape mode.

if you think Im lying, check lowlight C901 samples from esato's photo gallery. see these photos @ 100% original size.



Posted by Kirankj1724
the photo posted by pavithra_uk contains white dots.. check zooming towards the sky...

Posted by R1zbear

On 2011-01-30 17:32:52, Kirankj1724 wrote:
i dont think so.. and BTW all de pics from my C901 are really great.. so i feel nothing to worry about.. do u hav any prob wen u take pics normally?
I also think so.


__________________
Watch I Am Number Four Online Free

Posted by strizlow800

On 2011-01-29 08:28:37, plankgatan wrote:
every phones has 2 year warranty....so as you



That is not the case in every country. Some operators sell phones with only 1 year warranty and 3 - 6 months for the battery.

Posted by LaMaster
What do you think can I change my C901 to the new because of these hot(ded) pixels as warranty? Maybe i can my cashes back? Is it possible because of these hot(ded) pixels to change my digital camera?
Although, unfortunately, I can not find a replacement for this phone
Like player/camera/phone it one of best (MO)
[ This Message was edited by: LaMaster on 2011-04-19 09:35 ]


Posted by dizzybee
Could it be dust under the camera lens?


Posted by pohuman
I found the dots reason!

Posted by Kirankj1724
what is it

Posted by pohuman

On 2011-07-12 19:22:15, Kirankj1724 wrote:
what is it



I will explain soon..

Posted by LaMaster
I recently shooting on digicam Canon A470.
After change manual mode forced ISO80 night exposure will 2 seconds and will appear the color (hot) pixels as on C901.
But on digicam hotpix were far fewer.
[ This Message was edited by: LaMaster on 2011-07-13 05:59 ]


Posted by pohuman

On 2011-01-26 05:04:21, pavithra_uk wrote:
Today I brought a used C901. works perfectly. but When I take photos on low light / black I can see few white dots on the viewfinder. these dots also can be seen in photo. (bit blurred due to compression/post process)
dot places are permeneant. its look like dead pixels (or hot pixel)
[ This Message was edited by: pavithra_uk on 2011-01-26 07:55 ]



Which camdriver do you use? Raider or original?

I have grey dots all the photos in this topic. I found problem now.. I can help..
[ This Message was edited by: pohuman on 2011-08-18 00:15 ]



Click to view updated thread with images


© Esato.com - From the Esato mobile phone discussion forum