  The method of Rindler and Ishak enables one to study how light is bent in the
vicinity of a non-rotating and spherically symmetric gravitational lens. This
method mainly aims to investigate the role of cosmological constant in the
consequent path. In this paper, we use the extension of Rindler-Ishak method
(RIM) in order to evaluate the deflection angle of null geodesics in the
equatorial plane of Kerr-Newman anti de Sitter (KNAdS) spacetime. We then use
astrophysical data to see the effect of rotation and charge on the bending
angle of light for seven distinct stars and two black holes under the
assumption of having a KNAdS background with a negative cosmological constant
$\Lambda$.
