Which is an advantage of using photographs in data collection?

• A. They are more accurate than field sketches
• B. They are always bias-free
• C. They replace the need for notes
• D. They cannot show changes

Answer: (A)

Photographs give a precise visual record of what is being studied, capturing exact shapes, colours, textures and spatial relationships that sketches can miss. Because the image shows what the place looks like at a moment in time, it tends to be more accurate than a field sketch, which depends on the observer’s drawing skill and memory. That’s why this is the best choice: photographs provide a clearer, more objective record of features.

But photographs aren’t completely free of bias. The framing, angle, lighting, and what was chosen to photograph can influence what is emphasized or omitted, so they aren’t bias-free on their own. They also don’t replace notes; you still need written details like location, date, scale, and any measurements or context. And photographs can show changes over time when you compare images taken at different moments, so they do have value for showing change.