Rotator cuff injuries cause pain in your shoulder and upper arm. The pain may be most noticeable when you reach up or out. When you turn your arm as you lift it, the tendons are more likely to rub against surrounding structures.
The essential difference between the original series of AF Nikkor lenses and all AF lens types introduced subsequently, from the AF-D versions onwards (see below), concerns the compatibility of a particular lens with Nikon's enhanced Matrix metering system known as 3D Matrix metering that was introduced during 1996.
What\'s the difference between an OS camera lens and an IS lens? I am buying a Canon EOS T2i and would like an all-purpose lens for vacationing. I am torn between the Canon 18-200 lens,which has IS, and the Sigma 18-250 lens, which has OS (although they describe it as Image Stabilization.