I'm pretty sure there is a relationship with using BOTH procedures in sequence or it doesn't work. If not followed by a sensor cleaning mode operation it's worthless. A simple long exposure is most certainly NOT going to effect hot pixel mapping. But for some reason the cleaning procedure afterward seems to work (it did for me anyway).
traveler wrote:
This worked for me on a D300 that had 3 hot pixels. I set the menu to give me immediate access to the sensor cleaning, than placed the camera in BULB mode, pushed down the shutter for at least 20 seconds, then as soon as I released the shutter immediately went into sensor cleaning mode twice in a row. Strangely enough this mapped out the dead pixels....they were flat gone and not seen again. It's worth a try. Thus far I haven't seen any dead pixels on my D700.
Ok so I have a new D300 and on the 2nd day (night) I was shooting some Rugby at night in poor light...and what due I find but one stuck bright blue pixel. I know one really don't mean crap but it was my dead pixel and now I kewn about it and I did not like it. Anything above 800 and it could be seen What to due, searched FM and found this post and one other very simular in the Canon forum. Well since it is under warranty I had nothing to loose so I tried -
Yes it works...it's gone... no crap it's really gone - THANK YOU TRAVELER!
I tried Traveler's trick a couple of times, but I had no luck removing the stuck pixel.
When u set the menu to give immediate access, do you add it under the My Menu section? Also what bulb mode do u use? The on in S or M? When u pressed the shutter down, did the shot have to be on a tripod? Then when u release the shutter do u just hit ok, wait for it to clean, then hit ok, wait for it to clean? Turn off the camera when finished? What ISO do you capture the bulb image at as well?
Sorry for all the questions, but I am really frustrated that I have a stuck pixel on my camera and also that everyone has had success using this technique but me.
Ok so I have a new D300 and on the 2nd day (night) I was shooting some Rugby at night in poor light...and what due I find but one stuck bright blue pixel. I know one really don't mean crap but it was my dead pixel and now I kewn about it and I did not like it. Anything above 800 and it could be seen 
What to due, searched FM and found this post and one other very simular in the Canon forum. Well since it is under warranty I had nothing to loose so I tried -