The 2nd figure is an example of a zoom lens
Explanation:
A zoom lens can be manually adjusted to create focused images of the subject from very close or very far away.
Zoom lens are manufactured by Nikon, Canon, Sony, and others.
They improve image quality in both well lit environments ( low aperture ) and in dimmed environments ( maximum aperture ).
Various types of zoom lenses are :
Perfocal lens maintains it's focus across all it's focal lengths.
Varifocal lens comprise of majority of zoom lenses and the user has to physically refocus until the subject is in focus again.
Telescopic lens or a superzoom lens may provide a larger range of focal lengths.
Wide angle zoom lens allows to user to have a wider view from the lens compared to other lenses.
