Focus peaking is a technique used in photography to highlight the areas of an image that are in focus. This is done by overlaying a colored outline on the in-focus areas, making them easier to see and adjust.

Focus peaking works by analyzing the contrast between adjacent pixels in an image. When the contrast is high, it indicates that the area is in focus. The camera then overlays a colored outline on these areas to make them more visible.

Focus peaking offers several benefits, including more precise manual focusing, reduced risk of misfocusing, and improved focusing in low-light conditions.

Focus peaking is a feature that is commonly found in DSLR cameras, mirrorless cameras, and even some compact cameras.

Red is the most commonly used color for focus peaking outlines, as it stands out well against most backgrounds and is easy to see.

In many cameras, the color of the focus peaking outline can be changed to suit the user's preference or the specific shooting conditions.

The optimal focus peaking sensitivity setting depends on the shooting conditions, such as the lighting and the amount of detail in the scene. It is generally recommended to start with a low sensitivity setting and adjust it as needed.

Focus peaking can be used with both manual focus and autofocus lenses. However, it is particularly useful with manual focus lenses, as it provides a visual aid for achieving precise focus.

Focus peaking is especially useful for macro photography, as it allows for precise focusing on small subjects with shallow depth of field.

Focus peaking can be used to focus on moving subjects, but it may be more challenging than focusing on stationary subjects. It is important to adjust the focus peaking sensitivity and technique to suit the specific shooting conditions.

Focus peaking does not affect the image quality, as it is a visual aid that is overlaid on the image and does not alter the actual pixels.

Focus peaking is not a standard feature in all cameras. It is typically found in higher-end cameras, particularly those designed for professional or enthusiast photographers.

Focus peaking provides a visual representation of the in-focus areas, enabling photographers to achieve more accurate and precise focus, especially when working with shallow depth of field or intricate subjects.

Focus peaking is particularly advantageous in macro photography, where precise focus is crucial for capturing sharp and detailed images of small subjects.

Focus peaking works by overlaying a colored outline on the sharpest areas of the image, allowing photographers to visually identify and adjust the focus to achieve critical sharpness.