Dust Problem?

php-fox

Hi guys. I am a newbie in photography.
Bought canon 500d in December.
Few month ago noticed black spots on my pictures.
(http://farm3.static.flickr.com/2719/4471242202_06ed6be34b_b.jpg)
Top left corner. Did an automatic sensor cleaning and the spots went away for a while.
Last week, they came back again http://farm3.static.flickr.com/2745/4471242766_49053e4433_o.jpg

Is this normal? Or should I ask for a new camera. May be it's not as air tight as it's supposed to be. Any advices?

AnCatDubh

normal - welcome to the world of DSLR. Due to having interchangeable lens - dust will visit your images pretty frequent, so you need to get used to dealing with it effectively.

#1 - do the in camera dust shake thing if your camera supports it.
#2 - get a rocket blower (should cost about €10) and blow out the chamber (mirror up / don't touch the lens)
#3 - There are various wet/dry cleaning solutions available should #2 not work
or
#4 - leave in for a proper clean in a service center if neither of the above work.

You can clone and heal areas with such blights on the resulting image in pp.

pixbyjohn

Both of your photos in your examples are taken at f9 and f11, at f numbers above f8 dust is seen more often. Don't be too worried about this as you can clone out the spots in Photoshop or Lightroom and also in Picasa.
As AnCathDubh advised you dust is the enemy of DSLR cameras. Try to change lenses in dust free areas. Those spots you have are not serious enough yet to have a professional clean but the blower might clear them for you.

Look at this link, cleaning sensor with a rocket blower
http://www.youtube.com/watch?v=huOdzpl534k

php-fox

Thanks for advices guys. I'll get a rocket blower

pixbyjohn

http://www.youtube.com/watch?v=dzUHH_3hRxI