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 brings stepping motors to its DSLRs with two 18-55mm AF-P lenses. Nikon is bringing stepping motors to its DSLR lens lineup for the first time with a pair of 'AF-P' lenses, both of which are collapsable 18-55mm zooms (one with vibration reduction, the other without).