Nah... don't bother. They'll keep it for awhile to do a token check and tell you nothing's wrong. But this time they're right: nothing's wrong...
could it be CCD problem?
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Nah... don't bother. They'll keep it for awhile to do a token check and tell you nothing's wrong. But this time they're right: nothing's wrong...
microcosm
Senior Member
Bring it back and get them to fix it until they fix it. There is no reason for you to accept a camera that is not performing. You paid for the camera you know?
Also, what was the story behind that last sentence in their email? You bought your camera in Hong Kong/China?
the last sentence was meant to reply me when i ask why would they send my feedback for this issue to HK service ctr instead of Singapore where i stay when they email inform me that will refer my issue to HK for investigate.
actuali my feeling of this issue is how can they tell me has limitation for feature that design in..and only kick in after certain timing? are we talking turbo charged car that need to reach xxxx rpm to activate the turbine?
The Noise Reduction is designed to work from 4 seconds.
This seems to be the reason that you found many noise (hot pixels) at 1.6 to 3.2 sec. where the NR does not function.
microcosm
Senior Member
I do not have a E-330 at the moment to try this out, but are there those who can really verify this? I think if the guys at Olympus gives you a BS answer to your email, it only means you can take it to a higher level and demand for a new camera as yours is a lemon that cannot be fixed. Problems might not be isolated to only the CCD and even the processing engine. It can be anything until someone who has component level troubleshooting skills can verify.
Blu-By-U
Senior Member
Thanks drakon09. That was what I was trying to say. out of context but that is also taking exposure above the 1 sec but below 4..so NR won't work. Won't that have the same effect then taking night shots?? I saw that on my Day time IR shots.
Back to the tropic, is the pixel mapping not suppose to remove/ disable those dead or hot pixels?
Back to the tropic, is the pixel mapping not suppose to remove/ disable those dead or hot pixels?
oh..am using E500. to me is something that is not very right too that NR work only after >4s according to their specialist?
microcosm
Senior Member
Precisely why I think it is utter, convenient BS that they are saying this. But that said, let's investigate this.
I've just tried some long exposures with my E-330 and it does seem that NR only kicks-in for exposures longer than 4 sec. If below 4 sec (I tried a 3.2sec shot), I can see the image review on the LCD almost immediately after the shot concludes. If above 4 sec, the image review doesn't appear until another approximately 2xT (where T is shutter speed) sec, indicating that some internal processing is going on.
However, I have doubts as to how much NR can help.
Below are shots taken with the lens cap on and the viewfinder shutter closed, and converted to colour-negative images. Their brightness histograms were subsequently 'stretched' by truncating the darkest 0.01% of the pixels, and the brightest 0.01% of the pixels. The idea is to bring the non-black pixels out to be more noticeable. Notice the characteristic banded noise of the NMOS sensor/circuitry.
At ISO100, 2 sec exposure:
At ISO400, 2 sec exposure:
At ISO1600, 2 sec exposure:
However, I have doubts as to how much NR can help.
Below are shots taken with the lens cap on and the viewfinder shutter closed, and converted to colour-negative images. Their brightness histograms were subsequently 'stretched' by truncating the darkest 0.01% of the pixels, and the brightest 0.01% of the pixels. The idea is to bring the non-black pixels out to be more noticeable. Notice the characteristic banded noise of the NMOS sensor/circuitry.
At ISO100, 2 sec exposure:
At ISO400, 2 sec exposure:
At ISO1600, 2 sec exposure:
Continued from previous message, because I'm not allowed to link more than 5 images in one message:
At ISO100, 6 sec exposure:
At ISO400, 6 sec exposure:
At ISO1600, 6 sec exposure:
Original SHQ JPEGs are here (17MB zipped file):
http://www.filesend.net/download.php?f=3940334a4a89ea1fe1982f1bd9368b2f
As you can see, the ISO100 shot is now very very clean, devoid of the obvious hot pixels in the 2sec exposure shot. But not the other two.
But maybe it's just because my E-330 is a lemon. If/When I rightfully get a non-lemon E-330 later from Olympus Support, perhaps these results might be less terrifying than what they are now.
Do pay a visit my banded noise problem thread at:
http://forums.clubsnap.org/showthread.php?t=224562
At ISO100, 6 sec exposure:
At ISO400, 6 sec exposure:
At ISO1600, 6 sec exposure:
Original SHQ JPEGs are here (17MB zipped file):
http://www.filesend.net/download.php?f=3940334a4a89ea1fe1982f1bd9368b2f
As you can see, the ISO100 shot is now very very clean, devoid of the obvious hot pixels in the 2sec exposure shot. But not the other two.
But maybe it's just because my E-330 is a lemon. If/When I rightfully get a non-lemon E-330 later from Olympus Support, perhaps these results might be less terrifying than what they are now.
Do pay a visit my banded noise problem thread at:
http://forums.clubsnap.org/showthread.php?t=224562
microcosm
Senior Member
They cannot ignore this lowly E-500 as this is one of the only 2 dSLR left in their camp. The E-400 do not count as it's for a limited marker. If both of the E-330 and E-500 are having problems, then Olympus is in hot soup big time!!!
Let's hope that the PMA next year will see some happening new products come out. But honestly, the problems discussed in here are being magnified. I have no problems so far with the cameras because you don't shoot at such high ISO all the time. So chill, everyone.
It is not lemons lah. I think you guys are confused about the issue.
Pixel mapping are not meant for hot pixels as 99% of the time, those pixels are working fine so manufacturer usually don't remove those pixels.
What you guys are seeing is hot pixels and usually the NR they do is dark frame subtraction. Basically they take ANOTHER shot with the shutter closed with the same exposure time and map out the respective hot pixels. Different cameras has different standards as to when to apply this technique. I remember the KM7D I had applied this for exposire longer than 1 sec. Olympus probably apply for exposure longer than 4 seconds.
Seriously ALL CCDs have HOT PIXELS all over when you shoot at 3 secs. The problem is NOT with the CCD but rather WHY olympus choose to apply dark frame subtraction only for exposure longer than 4 seconds, while other companies usually do it for >1sec.
So the technician is right in saying there is NO POINT in changing your CCD.
Pixel mapping are not meant for hot pixels as 99% of the time, those pixels are working fine so manufacturer usually don't remove those pixels.
What you guys are seeing is hot pixels and usually the NR they do is dark frame subtraction. Basically they take ANOTHER shot with the shutter closed with the same exposure time and map out the respective hot pixels. Different cameras has different standards as to when to apply this technique. I remember the KM7D I had applied this for exposire longer than 1 sec. Olympus probably apply for exposure longer than 4 seconds.
Seriously ALL CCDs have HOT PIXELS all over when you shoot at 3 secs. The problem is NOT with the CCD but rather WHY olympus choose to apply dark frame subtraction only for exposure longer than 4 seconds, while other companies usually do it for >1sec.
So the technician is right in saying there is NO POINT in changing your CCD.
the technican that say this is thru email that i sent to jp oly ctr but our local ctr's technician suggest i pay $288 to change the CCD... n also job order stated that she perform the pixel mapping n tested ..ok before return to me...
anyway i dun have much confident about the local ctr.
the technican that say this is thru email that i sent to jp oly ctr but our local ctr's technician suggest i pay $288 to change the CCD... n also job order stated that she perform the pixel mapping n tested ..ok before return to me...
anyway i dun have much confident about the local ctr.
since they set the NR to > 4 seconds, the local tech probably tested it with exposure > 4 secs... standard operating procedure. They will not scan through all the exposures I think.
Local center all like that one. For fujifilm, the last time I checked they don't even have pixel mapping facility in Singapore... duh....
wind30...frankly, i bet the tech dont even know about the NR work from 4s onward...anyway i will go and ask to test another e500 n see how the result show..chances i have no case for this since jp oly offically email said that NR work only >4s..well what to do...LL but will try to work around it n enjoy the tool that i have lor...
there're more things in life that need attention.
cheer!!
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