I have white circles showing up after taking a picture. I've changed lenes, cards, lcd screen and checked the sensor with a loupe. It was in the picture when I down loaded them to the computer. Is my sensor going bad? Please help with ideas. The camera is 9 months old should the repair be coverer under warranty?
Thesse are the white circles I've been talking about. After checking the sensor a second time there is a little dust, but that usually shows up black. Again I get the same thing with different cards and lenes.
See if these blemishes are in the same place on each photo. If so, I'm pretty sure you have goobers on your sensor. There are posts on this forum about what to buy and how to remedy this. It's a little scary at first, but with the right tools and a little care, you should be as good as new.
I don't think this is a sensor failure. One would expect that sort of thing to be on a pixel by pixel basis, yet your photo shows distributed globs that affect numerous pixel sites in a symmetrical way.
What you have is 2 oil spots and 2 dust spots. You don't have to clean your whole sensor to get rid of these spots. Just get yourself a magnifying glass and Sensor Klear pen from the same company that makes lens pens. Magnifying glass will let you see where spots are and use Sensor Klear pen to flick them off. BTW, Sensor Klear pen and Lens Pen are not the same thing. Lens Pen uses very fine carbon to clean lenses. Sensor Klear uses nothing but very soft felt.
The cleaning chemicals used in wet cleaning the sensor may very well take care of whatever it is, oil included. It may take multiple swabs to get all of it. But I would give it try before sending camera back.
The white circles in the center of the spots suggests that is it not normal oil or dust. To be brighter than the surrounding area it must not only be translucent but is concentrating light to be brighter after passing through it. So what material or liquid would dry in a contour that would become a concentrating lens? That leave oil and water out. Thee are some spores that would have the correct shape, as do pollens. If is is pollen, it might be hard to get off due to the organic "glue" they stick to landing surfaces with. If it Methyl Alcohol, (a simple less expensive name for "Eclipse" fluid) is pretty good as an organic solvent that could dissolve the glue if its pollen or spores. Try cleaning and see what happens. Stan St Petersburg Russia
The tech that cleaned the sensor said it wasn't oil, but appeared to be water spots. I have no idea where the water came from. It was windy the first couple of days of my trip without any rain. At least that scare is over.
It could not be water spots, which is usually used to describe the ring of residue left after water evaporates, because it needs to have a 3d structure to concentrate light, which is why I said it was not water but a liquid water drop could offer enough refraction for light concentration. That would evaporate in hours however. So whatever it was, it had structure and a high refraction index and now is gone due to cleaning. This case in only unusual in that it was not typical of the dust/oil/water spots that we see in DSLRs. Stan St Petersburg Russia