Hye everyone, I am new here and i have problem with my canon 550 D.
after snap a picture , there are some black dots on my scren...i try transfer to computer, but the result is still same....
here i attach the example: hope someone can tell me what is the problem,
the dots became blur when i change the mode.
more clear about the dots.....
Your camera needs a sensor cleaning... badly! That's all. If you aren't sure how to clean it yourself and don't have the proper supplies, many better camera stores or camera repairers offer a cleaning service for relatively low cost. At the very least, get a Rocket Blower or similar, learn how to put the camera into sensor cleaning mode, and give it a puff of air to blow away any loose particles. That won't help with more adhered stuff, though.
Less stopped down (larger aperture such as f4 or f2.8) will blur them more, at really large apertures (f1.4, f2) you might not see them at all. But at small apertures such as f16, f22, the spots will be more apparent and defined.
If you want to learn how to clean the sensor yourself, go to www.cleaningdigitalcameras.com and read every page thoroughly. There is less, but also good info at http://www.copperhillimages.com/index.php?pr=Tutorials
Hope this helps!