LCD Hot Spots
- Thread starter TuTu_CaR
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Two things can happen:
1. Sensor fault
2. LCD fault
How to confirm? Take a black shot (lens covered, 1/4000s maybe?)
If you view it on your computer and the dots are there then its a sensor problem.
If it only appears on the LCD, then you have a dead pixel problem on the LCD.
1. Sensor fault
2. LCD fault
How to confirm? Take a black shot (lens covered, 1/4000s maybe?)
If you view it on your computer and the dots are there then its a sensor problem.
If it only appears on the LCD, then you have a dead pixel problem on the LCD.
blurboiboi
Senior Member
anyone knows whether is hot pixels covered by warranty??.. I have tried the re mapping method and it does'nt work.. 
i realised i have got a few after the fireworks shoot... not sure whether is it the long exposures "killed" the pixels or wat...
i realised i have got a few after the fireworks shoot... not sure whether is it the long exposures "killed" the pixels or wat...
satay16
Senior Member
blurboiboi said:anyone knows whether is hot pixels covered by warranty??.. I have tried the re mapping method and it does'nt work..
i realised i have got a few after the fireworks shoot... not sure whether is it the long exposures "killed" the pixels or wat...
dun need to send in. i sent in mine, and all they did is just remapping. not economically sensible to change the whole ccd for a few spots. btw, i also had some remapping problems. but just last week, when i first on my cam on 1 aug, it worked.
smtan24
Senior Member
blurboiboi said:anyone knows whether is hot pixels covered by warranty??.. I have tried the re mapping method and it does'nt work..
i realised i have got a few after the fireworks shoot... not sure whether is it the long exposures "killed" the pixels or wat...
If I'm not wrong a certain amount of hot pixel on the LCD are allowed and is not grounds for replacement.
blurboiboi
Senior Member
satay16 said:
the way they remap... is it the same way the camera does it upon every new month??...
I had no problem with the ccd prior to the fireworks shot... was wondering could it be the long exposures that burnt the pixels....
btw how much it cost to replace the ccd??...
Trigger Happy
New Member
TuTu_CaR said:
1) turn preview off, if you currently have it on. it saves your lcd life, reduces further wear and tear, and makes you a more confident photographer in the long-run
2) use black marker to dot out the two spots :bsmilie: just kidding...
blurboiboi
Senior Member
zcf said:
called them... they have another help line that is catered for KM poduct owners.....
asked me to bring it down.... might take up to a week to repair.... no cam for a week.. how to survive?!?!?! :cry:
Long exposures should not damage the LCD screen... why should it? It should only affect the sensor... and anyway, it is highly unlikely that u should get a permanent red or green dot on the sensor... the sensor is monchromatic... it's the pass filters that give the image its colour... so can confirm it should be some stuck pixels on the LCD screen... u can try asking for an exchange although I dun know what Sony will offer u in return... just live with it lor... not significant as long as the sensor is ok...
Hi there. I'm a KM5D newbie and I had just sent my cam in for repair at SSC due to a few hot/dead pixels (hp/dp) on the CCD. Does only KM5D suffer from this hp/dp on CCD when using high iso or long exposure or do other DSLRs have this too? I've used Canon Powershot A80 PnS before and took lots of 15secs exposure and never noticed any hp/dp before.
I got hp/dp with these settings: 1/2 sec; ISO 400; +2EV; F3.5
Think these are acceptable settings and should not cause hp/dp right? While they are not too obvious if you don't look to closely, but I'm afraid it might appear on print or when the image is cropped and enlarged. PPing the photo may help, but at such low settings dun think the sensor should have any hp/dp at all for a mid-range DSLR. By the way, I don't understand what is meant by remapping and how it is done. Can anyone help to clarify?
Anyway SSC replaced the CCD sensor. I tested the cam immediately and had already noticed theres 2 hp/dp at different spots. :sweat:
Well thanks for reading this newbies long post. Hope someone can help to clarify. TIA. :sweatsm:
I got hp/dp with these settings: 1/2 sec; ISO 400; +2EV; F3.5
Think these are acceptable settings and should not cause hp/dp right? While they are not too obvious if you don't look to closely, but I'm afraid it might appear on print or when the image is cropped and enlarged. PPing the photo may help, but at such low settings dun think the sensor should have any hp/dp at all for a mid-range DSLR. By the way, I don't understand what is meant by remapping and how it is done. Can anyone help to clarify?
Anyway SSC replaced the CCD sensor. I tested the cam immediately and had already noticed theres 2 hp/dp at different spots. :sweat:
Well thanks for reading this newbies long post. Hope someone can help to clarify. TIA. :sweatsm:
tankm
Senior Member
Wah...so fast go SC visit ? How many more months left in the warranty ?
hp/dp common for large sensor. For the KM DSLR there auto remap at end of the month. What you need to do is:
1. Shoot some photos as reference where you can see the hp/dp.
2. Change the date and time to last day of the month and just before midnight. Using Oct as an exmple it will be 31st Oct, 2006 11:58PM.
3. Switch off the cam. And wait for 5 minutes (ie until the date switch to a new day).
4. Switch on cam, and shoot some photos and compare to the reference photo in (1).
5. Change date/time to current date/time.
hp/dp common for large sensor. For the KM DSLR there auto remap at end of the month. What you need to do is:
1. Shoot some photos as reference where you can see the hp/dp.
2. Change the date and time to last day of the month and just before midnight. Using Oct as an exmple it will be 31st Oct, 2006 11:58PM.
3. Switch off the cam. And wait for 5 minutes (ie until the date switch to a new day).
4. Switch on cam, and shoot some photos and compare to the reference photo in (1).
5. Change date/time to current date/time.
Hi TanKM. Yah I sent it to SSC cos of the hot spots and also because there was dust on the sensor and viewfinder. The warranty will last till May '07. ;p
Thanks for the remapping tip. I will try it later. So what does this remapping do actually? They change the pixel "position" so that it does not burn out? Would this just move the hp/dp to another position? If so than i guess it means I'd still see the hp/dp, only that they'll be moving around the screen. Would the higher range DSLR's face this problem too or would it just be lost in the millions of pixels? Or they would remove it during PP before making large prints? Don't think my 2 yr old 4MP PnS has this problem though even when i use max ISO and 15sec exposure to take stars. Truthfully I am quite surprised that this can happen in the KM5D, especially at "low" settings.
Fortunately I don't see it all the time. Just have to live with it and be careful when using certain settings I guess.
Thanks for the remapping tip. I will try it later. So what does this remapping do actually? They change the pixel "position" so that it does not burn out? Would this just move the hp/dp to another position? If so than i guess it means I'd still see the hp/dp, only that they'll be moving around the screen. Would the higher range DSLR's face this problem too or would it just be lost in the millions of pixels? Or they would remove it during PP before making large prints? Don't think my 2 yr old 4MP PnS has this problem though even when i use max ISO and 15sec exposure to take stars. Truthfully I am quite surprised that this can happen in the KM5D, especially at "low" settings.
Fortunately I don't see it all the time. Just have to live with it and be careful when using certain settings I guess.
tankm
Senior Member
If you only see hot pixel during long exposure, those are not hot pixel. For long exposure turn on the noise reduction and when you trigger the shutter make sure it's on single frame or timer mode. Continuous mode will disable the noise reduction. When noise reduction is enable during exposure longer than 2 sec, the camera will take another dark frame of similar exposure time and remove those long exposure hot pixel.
For shorter shutter speed for example 1/200s, if you see hot pixel/dead pixel those are faulty pixel. Happens in all camera, just some of them handle it better than others. For KM case, they do the remap once a month. After remap the hot pixel will be replaced with a computed value based on surrounding value.
After the service, is the viewfinder much better ?
For shorter shutter speed for example 1/200s, if you see hot pixel/dead pixel those are faulty pixel. Happens in all camera, just some of them handle it better than others. For KM case, they do the remap once a month. After remap the hot pixel will be replaced with a computed value based on surrounding value.
After the service, is the viewfinder much better ?
Hi TanKM. Yah I sent it to SSC cos of the hot spots and also because there was dust on the sensor and viewfinder. The warranty will last till May '07. ;p
Thanks for the remapping tip. I will try it later. So what does this remapping do actually? They change the pixel "position" so that it does not burn out? Would this just move the hp/dp to another position? If so than i guess it means I'd still see the hp/dp, only that they'll be moving around the screen. Would the higher range DSLR's face this problem too or would it just be lost in the millions of pixels? Or they would remove it during PP before making large prints? Don't think my 2 yr old 4MP PnS has this problem though even when i use max ISO and 15sec exposure to take stars. Truthfully I am quite surprised that this can happen in the KM5D, especially at "low" settings.
Fortunately I don't see it all the time. Just have to live with it and be careful when using certain settings I guess.
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