What is a primary function of multi-megapixel cameras?

A primary function of multi-megapixel cameras is indeed to allow zooming on objects of interest. Multi-megapixel cameras capture high-resolution images that possess a greater amount of detail compared to standard definition cameras. This increased resolution enables users to zoom in on particular areas of an image without losing clarity or becoming pixelated.

This capability is especially important in surveillance, photography, and any application where detail discernment is crucial. It enhances the ability to identify objects and subjects in a scene and provides flexibility in post-processing, where cropped or zoomed images retain higher quality.

The other options do not accurately represent the primary function of multi-megapixel cameras. While providing high-definition video with minimal storage would be a desirable feature, multi-megapixel images often require more storage space due to their larger file sizes. Creating fixed single-view coverage is more characteristic of a static camera setup, not specific to the benefits of multi-megapixel technology. Lastly, operating only in well-lit areas is limited and does not emphasize the key strength of multi-megapixel cameras, which can perform in various lighting conditions depending on their specifications.