Thread: Sensor Glitch
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12-21-2008, 08:15 PM   #20
jeffkrol
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Location: Wisconsin USA
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Posts: 1,635
Originally Posted by Sharkonwheels View Post
I get nothing until i go down to threshold of 5, and then 2 HP show up.

OK - let's assume the sensor is 100% correct...what else could cause this?
As I said earlier, when I took a snap with lens cap on, I saw nothing, and when I took a snap of one of my rear surround speakers (black) I got nothing.

Mebbe something on the mirror?
The lens look clean to me...

Please also DO keep in mind I'm a n00b, especially when it comes to DSLR's

T
Threshold 5 is nothing. and as I said, sometimes these things are dynamic.
Some show up sometimes (as in increasing exposures ect..)
Anyway a visual idea of what you are looking at/for...
That 40 listed is a bright blue hot pixel.
I can't really explain what you are seeing (it is a hot pixel cluster) only that it's annoying but not earth shattering. My usual recommendation is to get it replaced if it's in an annoying spot (personal judgement).
You need to shoot a dark frame at the speed that you are seeing that pixel cluster. Keep in mind too slow of shutter and the camera will do a "dark frame subtraction" eliminating most of the hot pixels..
Processing an image and pulling up the shadows or just a general increase in exposure can change your "5" to a 50 making it much more visible. To verify any of this just import your photo into an editor w/ rulers and get an idea of exactly where the pixel is. Match it to your coordinates in the test. I would bet it will match one.
At 5 I have 43 "hot pixels" at 2/10sec.

Last edited by jeffkrol; 12-21-2008 at 08:49 PM.
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