A: Well, the spots could be several things. How old are you? Just kidding!
If you have a DSLR (Digital SLR) it is most likely that you have dust on your sensor. Camera manufacturers are trying to engineer "dust on the sensor" out of the picture...but the reality is that when we take a lens off a camera, or operate a large zoom lens (which acts like a bellows) dust gets into the sensor chamber and some of it stays on the sensor...which causes spots on images. Here is a link to an article about removing dust
Personally, I hate sensor dust and have learned to be very careful about changing my lens.
Just posted! Our new lens review of Nikon's top-end fast telezoom, the AF-S VR-Nikkor 70-200mm F2.8G ED-IF. This is the first in a series of reviews in which we'll be comparing it with similar lenses from Canon, Sigma and Tamron, using both APS-C and 35mm full frame cameras. The 70-200mm F2.8 VR has long been a favourite of Nikon DX format shooters, but how well does it stand up on the new full-frame D3? Read on to find out. 
Canon has released firmware updates for its range-topping EOS 1D Mark III and 1Ds Mark III cameras. The updates, to versions 1.2.3 and 1.1.2 respectively, provide new custom functions to provide direct access to autofocus points and additional ways to apply exposure compensation. They also promise to: "improve the stability of AF accuracy in AI servo AF mode when shooting extremely low-contrast subjects." 
