Where are these spots coming from?

[brambor]

I use Canon D30. I have some spots on my pictures and I don't know

where they are coming from. It shows best on this underexposed image

I took this morning. I am attaching the image to the post. My lens

is clean so it is not coming from there. Could anyone guess what I

need to clean to get rid of these round dots?

 

Thanks,

 

rb

[marc_bergman1]

Could it be that the sensor needs to be cleaned?

[hans_eckelman]

Your sensor definitely needs to be cleaned. Follow the instructions in the manual carefully. Nice pic BTW. =)

[aalok_kacha]

I had some similar spots in pictures taken with my 10D. The spots were most

prominent in pictures of a bright area such as sky (where I first noticed the spots) and

on a lampshade (which I used for testing at home). The spots were much darker and

more sharply defined when the lens was stopped down to a small aperture such as f/

22.

 

I set the camera to sensor clean and looked at the sensor with a bright flashlight and I

could see the dust. I used the rubber bulb from a blower brush (remove the brush

part) to clean off the sensor. I held the body upside down so the dust would fall away

from the body. This worked great and my shots are spot-free.

[the_macman]

>>>>>>> Your sensor definitely needs to be cleaned.

 

Why the certainty? From what I've read: My lens is clean so it is not coming

from there. [That's single lens]. To Rene: tell me how do you clean your lens

from inside? :) First things first, change the lens (given that you own more than

one). If the spots are still there, it's the CCD, but you can't know.

[aalok_kacha]

I didn't mention it, but I tested with 2 lenses before cleaning the sensor. It is a good

idea to confirm that the problem is in the body before messing around with the

sensor. I don't have a 2nd EF lens yet, so I just went to a local shop (Helix in Chicago)

& they let me try another lens.

[severi_salminen]

Dust in lens does not show on picture. It just darkens the image tiny bit and makes it more prone to flare. Try it: put some particles on your UV filter.

[oliver_s.]

As Severi wrote! Lens defects and dirt <b><i>never</i></b> show in the picture but by decrease of contrast and--in extreme cases--of sharpness. The spots on your images, Rene, are definitely due to dust. Michael Reichmann has an essay on "<a href="http://www.luminous-landscape.com/essays/sensor-cleaning.shtml">digital sensor cleaning</a>" on his website.