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10-02-2009, 11:35 PM   #1
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prinze18's Avatar

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Hot Pixels?

Hello hope summer was fun for everyone....

So I was at a concert and probably shot one too many exposures I just went into paparazzi mode and started firing away ... On review back home, I noticed that I have a hot pixel in some of the pictures. I know this because I read this somewhere before but dont recall much other than it is called a hot pixel.

Question 1: Will this hot pixel continue to show up in all future exposure? i.e. Did I over do it with the shooting?

Question 2: Is a hot pixel an effect from the lens or the sensor?

Cheers,

10-03-2009, 05:23 AM   #2
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Yes, it will show up in up in future --the good news is that practically any raw converter has a 'remove hot pixel' option. I don't know whether your camera has a 'pixel mapping' function; if it does, the hot pixel would be taken over by info from its surroundings.

A hot pixel is something that affects the sensor. Avoid using the lcd screen too much, and avoid high temperatures (too the extent it's possible--if you're on a trip in Egypt, that's going to be rather hard tot do). Anyway, more hot pixels will develop in the future; it's normal, don't worry.
10-03-2009, 09:07 AM   #3
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Re hot pixel

I had this problem also.
Had red pixel show up in my pictures at the same location on all the pictures.
I took a Rocket air blower and blew air over the CCD and had no problem since.
Therefore I believe it was dust on the sensor and not a sensor fault.
10-09-2009, 07:17 AM   #4
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How can dust cause red pixels? Usually they turn up as grey smudges.

10-09-2009, 11:22 AM   #5
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Yeah, I'm guessing that was coincidence - dust doens't cause red pixels. The hot pixel may have just gone away on its own.

For the OP: hot pixekls come, hot pixels go - that's life with digital. Don't worry about shooting too much. Many RAW procesisng programs can deal with them automatically, several camera models have a mode where they'll remove those for you (pixel mapping, it's called in the setup menu).
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