# Focus stacking > Combining several photos focused at different distances into one image that is sharp throughout. Also known as: focus stack. Category: Photography techniques. Focus stacking combines several exposures of the same scene, each focused at a different distance, into one image that is sharp from front to back. It extends depth of field beyond what a single exposure allows, which is useful in macro and product photography. ## How PhotoRobot uses it PhotoRobot lists focus stacking among the shooting functions of its production workflow and among the processing techniques integrated in PhotoRobot Controls. ## See on photorobot.com - [Production workflow](https://www.photorobot.com/production-workflow) ## Related terms - [Depth of field](https://www.photorobot.com/glossary/depth-of-field): The distance range in front of and behind the focus point that appears acceptably sharp. - [Macro photography](https://www.photorobot.com/glossary/macro-photography): Photographing small subjects at close range so that they appear life-size or larger on the sensor. - [Aperture](https://www.photorobot.com/glossary/aperture): The adjustable lens opening, given as an f-number; smaller openings give more depth of field. ## Where this term appears on photorobot.com Mentioned on 3 pages. Most relevant: - [High-Speed, High-Quality Photos and Advanced Image Processing](https://www.photorobot.com/blog/high-quality-photos-advanced-image-processing): For more information on these, search our blog for more on: Chromakey-masking or Focus Stacking. - [Packshot Photography - What is it, and How to Produce It](https://www.photorobot.com/blog/packshot-photography): Find processing techniques integrated into the software, with tools for clarity, colors, brightness, sharpness, focus stacking and much more. - [Production Workflow](https://www.photorobot.com/production-workflow): …(fast product photography in which the spin of the table remains uninterrupted) Focus stacking Instant photo-backup Video 4 Post-production.