Created by Yufeng Zhao
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Digital cameras uses electronic image sensors to capture light. Therefore, the technology behind the image sensor is crucial for better image quality.
Over the past decades, digital cameras benefit from advanced electronic manufacturing. As semiconductors get smaller, more pixels can be packed into a single sensor, resulting in a sharper and clearer image.
A Full-Frame digital camera is one with an image sensor format that is the same size as 35 mm format film.
Historically, 35 mm was considered a small film format compared with medium format, large format and even larger. However, due to high defect rate of larger digital image sensor, smaller form factors are much more commonly seen.
If under the same glass, smaller sensors cover a smaller field of view and thus a magnified perspective.