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Super Moderator
Can Dead Pixels be Sensor Dust?
EDIT--BTW...by dead pixel, I meant hot/stuck pixel (changes made below). ![Roll Eyes (Sarcastic)](images/smilies/rolleyes.png)
So an odd spring thunderstorm rolled through at about 11 pm last night. Of course, I ran out to take a few photos. In looking at them this morning, to my surprise, I see hot pixels.
30 sec, f/8, ISO 200, Long Exp Noise Reduction set to auto....I increased exposure +2 in this image to see them more clearly....
![](http://farm8.staticflickr.com/7055/6835610384_7121aeab46_b.jpg)
IMG_1964 small by kayaker72, on Flickr
![](http://farm8.staticflickr.com/7063/6835630422_32b4c4d576_b.jpg)
IMG_1964 rc by kayaker72, on Flickr
![](http://farm8.staticflickr.com/7053/6835630386_83f485a266_b.jpg)
IMG_1964 lc by kayaker72, on Flickr
BTW---processing to jpeg is making them smaller and lose a little of their color. In RAW, they are clearly red, blue, green or white and are very apparent.
The reason I am surprised is that I've tested my sensor before. I have taken 30 sec exposures with the cap on. And I found 3-4 small areas of hot pixels, only visible when really looking for them. Something I could live with. But, nothing like I see in the photo above.
So, the question gets to be, are my hot pixels getting worse or can sensor dust...or something else, cause what I am seeing. The reason I ask is that in ~2 yrs and ~22,000 exposures....I've never cleaned my sensor.
Thanks for any insight. I'll work removing the hot pixels....
Last edited by Kayaker72; 03-14-2012 at 12:41 PM.
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