spots on images

[holland]

I am using a Canon EOS 10D with a 28-105mm lens and I've noticed I've been getting these spots on my images (I've noticed them on long exposures). I was wondering if anyone could suggest what they could be - I've tried cleaning the lens and they appear at the same position everytime. I rarely take the lens off, but I'm just wondering if it could be on the CMOS sensor? Condensation on the sensor? Could it be within the lens itself? Would be grateful for any suggestions. Thanks in advance!
http://www.alexfineart.co.uk/spots.jpg

[robertwgross]

Your photo shows the classic signs of "dust on the sensor."

Do a search for Sensor Cleaning. Find out the materials and procedure, double check that with your Canon manual. Then do it yourself.

BTW, I clean my camera's sensor with a cotton swab and a half drop of lens cleaner solution. It takes me about a minute to do.

Others have suggested that they use only an air blower. That would be fine, if you only knew which crack the dust gets blown into.

---Bob Gross---

[holland]

Thank you for a very fast response. I was hoping it wasn't going to be that as I'm always worried about damaging the sensor .... nevermind, it's easily fixable - better than a damaged lens I suppose.

Does this happen often? Isn't there an automatic sensor cleaner for the camera, or is that another camera? Or perhaps I'm just confused and misread something!

Thanks again - I'll look into cleaning the lense. It's such an annoyance - every photo needs adjustment which is very time-consuming
Alex

[pmarz]

This very common. Forget about the blower, it usually makes it worse. Sensor swabs and eclipse is the way to go.

[Belmondo]

This very common. Forget about the blower, it usually makes it worse. Sensor swabs and eclipse is the way to go.

I respectfully disagree. I've only had one episode when the blower failed to remove all the dust from my sensor. That's in over a year and on three different DSLR bodies.

[RichardtheSane]

This very common. Forget about the blower, it usually makes it worse. Sensor swabs and eclipse is the way to go.

I respectfully disagree. I've only had one episode when the blower failed to remove all the dust from my sensor. That's in over a year and on three different DSLR bodies.

I'm with Tom on this one, I use a rocket bloewr and only twice have I needed to swab

[pmarz]

You are right I should have been more specific. the rocker blower is fine. The Canon recommended bubbble blower is a joke.

[Belmondo]

Not only do Rocket Blowers work well, they look really cool. Sort of like a Flash Gordon spaceship. (Anyone who doesn't know who Flash Gordon is, please leave the room. :roll: :wink: )

[robertwgross]

I respectfully disagree. I've only had one episode when the blower failed to remove all the dust from my sensor. That's in over a year and on three different DSLR bodies.

Keep in mind that all you ever get on your sensor is "desert crud."

Different kinds of dust require different procedures.

---Bob Gross---

[Belmondo]

Keep in mind that all you ever get on your sensor is "desert crud."

Different kinds of dust require different procedures.

---Bob Gross---

Crud is crud. We just have a whole lot more of it. (as far as the eye can see)

[robertwgross]

Crud is crud. We just have a whole lot more of it. (as far as the eye can see)

At the Salton Sea... that is crud.

Up here in the north, we have dirt, but it is good clean dirt.

---Bob Gross---

[drisley]

Someone here once mentioned using a large ear syringe instead of a rocket blower.
Seems like a great, cheap idea.

http://narang.com/img/ru/earsyringe.jpg

[Dooglla]

Someone here once mentioned using a large ear syringe instead of a rocket blower.
Seems like a great, cheap idea.

http://narang.com/img/ru/earsyringe.jpg

REally wonder it that would work...seen like a good idea though. Has anyone tried this method?

[drisley]

I've used it to clean dust off lenses and the viewfinder, and it works really well. It's much better than those dinky puffers you buy in camera stores.
I've never tried the Rocket Blower though. I just read that thing is 7.5" long!

[holland]

Okay, I've tried a hurricane blower and it hasn't shifted much of the dust - it tranferred a bit to another part of the sensor.

I noticed that dust only comes up on the image if I use a small aperture (f22) but nothing comes up if I use a larger aperture (f3.5) - I suppose this is just the focussing of the dust for smaller apertures, but i thought it was interesting to note.

Alex

[Danny Boy]

I recently purchased a Rocket Blower and it works well. It is rather large and it sits upright when not in use (using fins on the rocket) which I like.

I do have a blower as mentioned in the thread but it was used to suck boogers out of my little kids noses when they had colds. I voted not to use that on my camera/lenses. :lol:

My opinion only.

Dan