Thanks, I'm going to file this away for reference. I have seen a few
hot pixels on one frame of several seconds duration that I shot long
ago. But I don't normally take exposures longer than a second or even
1/2 second and had forgotten about it until the issue cropped up here.
I'll have to give the camera an acid test, see what it does and then
apply the remapping if it needs it.
Chuck Norcutt
WayneS wrote:
> On an EOS camera list. Original reference was to a dpreview
> forum, where the person tried several things. I just remember
> having hot pixels that were bugging me, and the below procedure
> eliminated them. Not sure if it reset the pixel map, or discovers and
> maps out new bad pixels. It is important to do the clean with
> the lens on and cap on for the re-mapping.
>
> WayneS
>
> At 09:52 AM 11/11/2008, you wrote:
>> Where did you learn this hot pixel remapping procedure?
>>
>> Chuck Norcutt
>>
>> WayneS wrote:
>>> Perhaps you need to reset the 5D. I believe one of the optimizations
>>> in the 5D is to store hot pixel information for faster post processing.
>>> I had a number of hot pixels and had to reset the map. The procedure
>>> is to operate the Sensor Clean function with a lens attached and
>>> lens cap on. Then power cycle the camera. This seems to have
>>> eliminated the hot pixel problem I was experiencing with my 5D.
>>> This is an undocumented procedure, but seems to work.
>
>
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