Bracketing records a controlled set of exposure variations. It is useful when you need alternatives or intend a supported merge workflow. Without a plan, though, it just produces extra files to sort through.
What to do
Keep framing stable and identify the exposure variable the camera changes. Choose a sequence that includes useful highlight and shadow information, then inspect the complete set before moving the camera.
Check the manual for how your camera brackets. Some vary shutter speed, some vary aperture or flash power, and the choice matters for depth of field and motion.
Planning the sequence
Decide these points before pressing the shutter:
- Number of frames: enough to cover the brightest and darkest areas you care about, but not more than you will use.
- Step size: smaller steps give smoother blending, while larger steps cover a wider range with fewer frames.
- Variable: shutter speed is usually preferred, since aperture changes alter depth of field.
- Drive mode: use a mode that fires the whole set quickly, or a delay to avoid shake.
- Support: a tripod keeps frames aligned for merging.
Check that the darkest frame keeps highlight detail and the brightest keeps shadow detail, using the playback and histogram.
A mistake to avoid
A bracket is not automatically an HDR result. Moving subjects, changing light and incompatible frames can still prevent a clean merge. Water, leaves and people can show ghosting when they move between frames.
A detail worth checking
If the final image will combine frames, keep a complete uninterrupted sequence. Mark sets clearly during import so a later selection does not accidentally mix neighboring scenes or discard a needed exposure alternative.
Try this practical check
Photograph a static high-contrast scene and label the darkest, middle and brightest usable files. Decide whether one frame already meets your needs before merging. Often a single well-exposed raw file does the job, and bracketing is only needed for extreme scenes.
Common questions
How many frames should I bracket?
Three is a common start. Use more only if the scene has a wide range of brightness that three frames cannot cover.
Do I need a tripod?
For a clean merge, yes or a firm support. Handheld sets can work if the software aligns them, but results vary.
Can I bracket moving subjects?
It is difficult. Fast bracketing helps, but movement between frames usually causes problems, so a single exposure may be a safer choice.
Related reading
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