Dust on CCD or faulty camera? Please check photos

Archived from groups: rec.photo.digital.slr-systems (More info?)

Nicolae Fieraru wrote:

> Hi All,
>
> There is a strange area on the photos I've done for checking the dust on the
> CCD. I uploaded the photos to http://www.users.on.net/~nfieraru/Nikon/
> I would like to find out your oppinions about the bright pixel which shows
> in the second photo. I took the photos on F22, out of focus and different
> brightness of the objects. The first image is darker and there is a pixel
> which hardly shows (a darker image) at position 2636x1266 (or very close).
> The pixel shows when viewing the image at full size (original pixels)
> On the second photo, the same pixels shows up, but very bright, like a
> bright star and red in colour (when image shown in original pixels size).


http://www.users.on.net/~nfieraru/ [...] 7_crop.bmp
Looks like a 'hot pixel' which is normal. I think you can send the
camera back to have the pixel mapped out if it's critical.


> Compared with the usual dust on the CCD this looks very unusual to me and I
> am not sure if it is dust or there is another fault with the camera.
> For your convenience, I uploaded just the cropped area of the photos,
> because the original photos are over 2MB in size, while the cropped bitmaps
> are under 30KB.
>
> Regards,
> Nicolae
>
>