Focus Stacking
A post-production technique that merges multiple images with different focal points to create a single, razor-sharp composite with infinite depth of field.
Focus stacking is a sophisticated digital image processing technique used to achieve an extended depth of field by merging multiple images captured at different focal distances. In the realm of high-end e-commerce, this process is essential for overcoming the physical limitations of camera lenses, particularly during macro photography where the depth of field is naturally shallow.
At JU Productions, we integrate focus stacking into our Catalog and Creative photography workflows to ensure every millimeter of a product—from the closest edge to the furthest detail—is rendered with tack-sharp clarity. This technique is a cornerstone of our production hubs in Singapore, the United States, and China, providing brands with high-fidelity assets that drive consumer confidence and minimize returns.
Why It Matters
Examples
- Jewelry: A macro shot of a wedding band where the front engraving and the rear pavé diamonds are both in perfect focus.
- Luxury Watches: Capturing the depth of a watch face and the texture of the strap in a single, crisp frame.
- Electronics: Showing the internal components of a device where every circuit is visible across multiple planes.
How to Apply
To apply focus stacking effectively, the camera must remain stationary on a tripod. The photographer captures a series of images, manually or electronically shifting the focus point in small increments from the foreground to the background. These files are then processed using specialized software like Helicon Focus or Adobe Photoshop, which identifies and masks the sharpest pixels from each layer to create a final composite.
Common Mistakes
- Inconsistent Exposure: Changing the aperture or shutter speed between shots, leads to 'flicker' in the final composite.
- Gaps in Focal Planes: Not taking enough 'slices,' resulting in blurry bands (soft spots) in the middle of the product.
- Camera Movement: Attempting to focus stack without a heavy-duty stand, making it impossible to align pixels in post-production.