FREE Photography Lens Optics and Selection Questions and Answers

Question 1

An architectural photographer is tasked with shooting a skyscraper from street level.
To ensure the building's vertical lines remain parallel and do not converge, which type of lens is specifically designed for this purpose?

Accepted Answer

A tilt-shift lens

Answer

A fisheye lens

Answer

A standard 50mm prime lens

Answer

A telephoto zoom lens

Question 2

Which of the following is a primary optical advantage of a high-quality prime lens when compared to a typical zoom lens?

Accepted Answer

A wider maximum aperture and superior sharpness

Answer

A wider range of focal lengths

Answer

Built-in image stabilization is always included

Answer

Lighter weight due to fewer glass elements

Question 3

A photographer uses a 200mm telephoto lens to take a portrait, standing far from the subject to frame them correctly. The resulting image makes the distant background mountains appear unusually large and close to the subject. This optical effect is known as:

Accepted Answer

Lens compression

Answer

Barrel distortion

Answer

Perspective expansion

Answer

Vignetting

Question 4

Upon reviewing a photo, a photographer notices purple and green outlines along the high-contrast edges of tree branches against a bright sky. What is the term for this type of lens aberration?

Accepted Answer

Chromatic aberration

Answer

Spherical aberration

Answer

Coma

Answer

Astigmatism

Question 5

A lens is described as a 'true macro' lens. Which specification is required for it to earn this designation?

Accepted Answer

A minimum 1:1 magnification ratio

Answer

A maximum aperture of f/2.8 or wider

Answer

A focal length of at least 100mm

Answer

Internal focusing mechanism

Question 6

What is the primary function of the multi-layer coatings applied to the surface of modern camera lens elements?

Accepted Answer

To reduce lens flare and ghosting by minimizing reflections

Answer

To make the lens waterproof

Answer

To increase the lens's resistance to scratches

Answer

To change the color temperature of the light entering the lens

An architectural photographer is tasked with shooting a skyscraper from street level.To ensure the building's vertical lines remain parallel and do not converge, which type of lens is specifically designed for this purpose?

An architectural photographer is tasked with shooting a skyscraper from street level.
To ensure the building's vertical lines remain parallel and do not converge, which type of lens is specifically designed for this purpose?