A local realtor is interested in putting up a billboard to advertise her services. She wants the visual acuity of the sign to be high. Which of the following would increase the visual acuity of the text?
A) Making the letters smaller, so more text falls on the center of the fovea.
B) Using black text on a plain white background.
C) Placing the sign on a dimly lit street to reduce the luminance.
D) Placing the sign far from the road so that it encompasses 5° of visual angle.

Question

Quizplus · Accepted Answer

Using black text on a plain white background is the best choice for increasing visual acuity. This provides a high contrast between the letters and the background, making it easier for the viewer to read. Making the letters smaller (A) can actually decrease visual acuity, as the viewer may have to strain their eyes to read the smaller text. Placing the sign on a dimly lit street (C) can also decrease visual acuity, as the low luminance will make it difficult to see the letters clearly. Placing the sign far from the road (D) may increase the size of the letters, but it will also decrease the overall visual acuity as the letters will be smaller in the viewer's visual field.

A Local Realtor Is Interested in Putting Up a Billboard