gjl711 wrote in post #18757451
I wonder if this trick still works.
To the OP, you need to define hot spot a bit more. I think T-Speed and myself are thinking hot pixels (random pixels turned on full blast), but a hot spot can be a much larger area with fuzzy edges. Individual pixels are normal and most post processing sfw takes care of that. A failing shutter can create a hot spot though usually it looks more like an arc.
Yes it still works (for individual pixels) . In fact if the lcd in the viewfinder develops spots, ie not on the sensor, the same process maps them out. We had a big thread on this on FM, and a canon tech put this info forth. We didnt believe it but after a few testimonies on FM and Dpreview, it seems to be valid.