Photoshop Technique
Focus stacking is a photographic method primarily employed in landscape photography to overcome the limitations of depth of field inherent in a single exposure. By capturing a series of images with different focus points—typically targeting the foreground, middle ground, and background separately—photographers ensure that every element within the scene is rendered sharply. This approach addresses the optical constraint where a wide aperture, often necessary for low light conditions, results in a shallow depth of field that leaves parts of the image out of focus.
The process begins with the acquisition of multiple frames, each focused at a distinct plane within the subject. These images are then imported into image editing software, such as Adobe Photoshop, where they are aligned to correct for any minor camera movement between shots. The software analyzes the sharpness of each layer and automatically blends the in-focus regions from each image into a single composite file.
This technique allows for an extended depth of field that exceeds the physical capabilities of the camera lens. It is particularly valuable in macro photography and landscape work where maintaining sharpness from the immediate foreground to the distant horizon is critical. The final result is a high-resolution image with uniform clarity across the entire frame, free from the blur associated with traditional single-exposure techniques.
Source Notes
- 2026-04-10: Photoshops Blend If Pixel Perfect Transparency via Brightness and Colo · ▶ source
- 2026-04-21: Adobe · ▶ source