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.
Nikon makes two different types of DSLR camera bodiesâthose that have a built-in focus motor, and those that don't. The cameras that don't have a focus motor built-in need to use a lens that has a focus motor built-in to it. The abbreviation for lenses that incorporate a built-in focus motor is AF-S.