Spots

A hot pixel should glow and a death pixel is black. In many cases when there is a hot pixel a line is visble on the image.
The spot in the image looks like dust.
Read [ame="http://en.wikipedia.org/wiki/Defective_pixel"]THIS[/ame] article that explain better that what I can do with my english :)

It certainly looks like a dust bunny.

Do you:

• Change lenses very much? - When changing lenses point the camera straight down helps with dust ingress
• Use a telephoto lens that moves in and out a resonable amount? - Rapid use of a telephoto can have a bellows effect and actually draw dust in. Especially with kit lenses.
• Store the camera without the lens on? - This means you should have the camera body cap on, but it also means you are taking the lens of unnecessarily.
• Have any spots on any of your lenses? - Not because of the spot being on the lens, but rather it could indicate a fungal problem which is also in the camera body.

Can you raise the mirror with the lens off? If so, do so with the camera pointing at the ground and use the blower fairly aggressively (make sure its clean first). Then see what happens. Most dust bunnies are reasonably easy to remove but some can be persistent.

As it's come back in the same location I suspect it may be fungal growth on the sensor though.

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Originally Posted by dm_td5

It certainly looks like a dust bunny.

Do you:

• Change lenses very much? - When changing lenses point the camera straight down helps with dust ingress Not all that often and always try to point camera down.
• Use a telephoto lens that moves in and out a resonable amount? - Rapid use of a telephoto can have a bellows effect and actually draw dust in. Especially with kit lenses. No, just the 2 that came with the camera ... 28/50 and 70/200
• Store the camera without the lens on? - This means you should have the camera body cap on, but it also means you are taking the lens of unnecessarily. Always with lens attached.
• Have any spots on any of your lenses? - Not because of the spot being on the lens, but rather it could indicate a fungal problem which is also in the camera body. Same spot, same place with both lenses.

Can you raise the mirror with the lens off? If so, do so with the camera pointing at the ground and use the blower fairly aggressively (make sure its clean first). Then see what happens. Most dust bunnies are reasonably easy to remove but some can be persistent. Have tried that on occasions. The camera is back at the workshop for fixing.

As it's come back in the same location I suspect it may be fungal growth on the sensor though. It was there from new ... fixable? Or should I push for a replacement body. Only purchased last July/August.

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See above.

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Originally Posted by Chucaro

A hot pixel should glow and a death pixel is black. In many cases when there is a hot pixel a line is visble on the image.
The spot in the image looks like dust.
Read THIS article that explain better that what I can do with my english :)

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Interesting read. Could it be a stuck pixel ??

That really does sound like a sensor fault then.

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Originally Posted by dm_td5

That really does sound like a sensor fault then.

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Turns out is was a faulty CCD .... whatever that is ... :rolleyes:

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Originally Posted by Rosco

Turns out is was a faulty CCD .... whatever that is ... :rolleyes:

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That's the "sensor". Hope it is all fixed now.

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Originally Posted by Numpty's Missus

HowStuffWorks "What are CCD or CMOS image sensors in a digital camera?"

mind you...I haven't read it ;)

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Thanks for the link. I read it and was impressed ... with how little I knew.