Blur Correction
Blur correction in photography encompasses techniques designed to achieve sharp focus across an entire image, addressing the inherent limitations of depth of field. In landscape photography, where both foreground and background elements require clarity, a single exposure often fails to capture all details sharply. This limitation arises because cameras can only maintain precise focus on a specific plane; using wider apertures or longer focal lengths reduces the zone of acceptable sharpness, resulting in blurred areas either in the foreground or background.
To overcome these optical constraints, photographers employ focus stacking, a method that involves capturing multiple images of the same scene at different focus distances. By varying the focal point across a series of shots, each frame captures a distinct slice of the scene in sharp detail. These individual exposures are then combined using specialized software to create a single composite image where the depth of field is effectively extended beyond the physical limits of the lens.
The process requires careful execution to ensure seamless results. Photographers typically use a tripod to maintain consistent framing and composition across all shots, preventing misalignment that could complicate the merging process. Modern stacking algorithms analyze the sharpness of each layer and blend the in-focus regions, producing a final image with uniform clarity from the nearest foreground element to the distant horizon. This technique is particularly valuable in macro photography and landscape work where maximum sharpness is critical.
Source Notes
- 2026-04-27: Correcting AI Infographic · ▶ source