Originally posted by Treefrog I'll have to look into purchasing a blower and trying it out. Thank you for that tip, I really appreciate it. Just out of curiosity, is it normal for the dust speck to be more noticeable at slower shutter speeds and disappear in bright light? Like I stated before, I'm new to dslrs.
Read the article I linked for you. Basically, the more stopped down your lens is (f16,f22, etc), the more likely you will be to see the dust. Since the dust is on the sensor screen, I've never quite understood why that is but it is. The only thing I can think of is the wider apertures basically drown out the dust making it less evident. Slow shutter speeds May make it more prevalent looking because Dust is not prone to camera shake. That is, when the camera moves with respect to your photo, so too does the dust. There of course will be some circumstances where you don't see it at all but in my experience, it doesn't just go away. It may Move slightly from photo to photo but as you've discovered, even that doesn't happen often.
Try running the dust shaker several times, checking in between each and see if it moves or disappears. If it Moves, the blower will definitely take care of it. It's a sad simple fact of dSLR life that no matter how careful we are, we must learn to deal with this minor inconvenience.