Hi all...
My first post on the forum (other than my "intro" message), so please be gentle!
I have a Nikon D40X which I've owned since Jan '08. For reasons I won't bore you with, I haven't used it properly until the recent months, but at last it is in regular service.
Anyway... by chance, while editing one of my pics in GIMP earlier today, I noticed a "hot pixel". As a result, I did the old "lens cap on" photo at low and medium ISO sensitivity settings, and have located a total of 11 pixels which are either white, red, blue or greenish. Of these, only 7 are even reasonably noticeable against a completely black background. Two or three, however, can be seen in a reasonable number of my photographs when there are dark(er) areas at those co-ordinates. I have no way of processing NEF raw files, so I'm working with FINE quality JPG from the camera. In these files, depending on the background, one particular defective pixel (which shows up in RED) can affect 2 or 3 pixels in depth around the central co-ordinate, and is even visible on screen when zoomed out to 50% actual size.
I've made a list of the co-ordinates of the 11 hot, defective and borderline pixels. I'm not too concerned about having to edit files manually in GIMP to check for the impact of these, and edit them accordingly. But I wondered if there's a processing tool that will deal with multiple hot pixels in pre-configured locations in JPG files (I don't yet work in NEF raw).
I could send the camera back under warranty (I recall it has 2 years warranty, being a genuine UK-supplied model), but I hear so many stories of dead and hot pixels being fixed, then a couple of months later, new ones appear. I'm happy to accept that this is just a trait of the technology and instead find the best way of dealing with it in post processing.
Any advice would be very much appreciated!
Thanks in advance, folks.
Mike
My first post on the forum (other than my "intro" message), so please be gentle!
I have a Nikon D40X which I've owned since Jan '08. For reasons I won't bore you with, I haven't used it properly until the recent months, but at last it is in regular service.
Anyway... by chance, while editing one of my pics in GIMP earlier today, I noticed a "hot pixel". As a result, I did the old "lens cap on" photo at low and medium ISO sensitivity settings, and have located a total of 11 pixels which are either white, red, blue or greenish. Of these, only 7 are even reasonably noticeable against a completely black background. Two or three, however, can be seen in a reasonable number of my photographs when there are dark(er) areas at those co-ordinates. I have no way of processing NEF raw files, so I'm working with FINE quality JPG from the camera. In these files, depending on the background, one particular defective pixel (which shows up in RED) can affect 2 or 3 pixels in depth around the central co-ordinate, and is even visible on screen when zoomed out to 50% actual size.
I've made a list of the co-ordinates of the 11 hot, defective and borderline pixels. I'm not too concerned about having to edit files manually in GIMP to check for the impact of these, and edit them accordingly. But I wondered if there's a processing tool that will deal with multiple hot pixels in pre-configured locations in JPG files (I don't yet work in NEF raw).
I could send the camera back under warranty (I recall it has 2 years warranty, being a genuine UK-supplied model), but I hear so many stories of dead and hot pixels being fixed, then a couple of months later, new ones appear. I'm happy to accept that this is just a trait of the technology and instead find the best way of dealing with it in post processing.
Any advice would be very much appreciated!
Thanks in advance, folks.
Mike
