Photomatix Pro User Guide 3
DSLR cameras and some compact digital cameras oer
Automatic Exposure Bracketing (AEB). This enables you to
automatically take three or more exposures in a row; one at the
proper exposure, one or more underexposed, and one or more
overexposed. Follow these steps if your camera oers AEB mode:
• Select the Continuous shooting mode on the camera’s
drive setting. Consult your camera manual for model-specic
instructions for using this setting.
• Set the camera to Auto Exposure Bracketing (AEB)
• If possible, use the camera’s self-timer setting, or a cable
release to minimize camera shake.
• Set the exposure increment to +/- 2 for optimal exposure
range. If your camera does not oer +/- 2 exposure
increments, select the maximum possible. Consult the camera
manual for model-specic instructions for choosing this
setting.
1.2 Selecting the Exposures
To get good results with HDR processing, your capture sequence must include photos that correctly expose
highlights and photos that correctly expose shadows. The latter is especially important to prevent noise from
showing in the processed HDR image.
In the lightest photo of the sequence, the darkest shadows should be at least in the mid-tones. To check this,
use your camera’s histogram preview in playback mode. In your most overexposed photo, the left part of
the histogram should be empty until 1/3rd of the histogram’s width. If this is not the case, add one or more
photos taken with longer exposure times. Another option is to re-shoot the exposure sequence with the
normal exposure set one or more EVs higher if your most underexposed image in the exposure sequence was
too dark. This is the case when the histogram of your darkest image is completely empty on the right half.
The number of exposures needed depends on the dynamic range of the scene, in addition to the exposure
increment. For most outdoor scenes, three exposures taken at +/- 2 exposure increments is sucient,
provided the scene does not include the sun. However, for the interior of a room with a bright view out the
window, you will need at least ve images taken with an exposure increment of +/- 2, or nine images taken
with an exposure increment of +/- 1.
In scenes with extreme dierences between light and dark details, you should change the exposures
manually to ensure you capture a wide enough range to cover your scene.
Note
The continuous shooting mode may not
always be the best strategy because
camera shake may build up. It is
recommended to use a method that
ensures the least possible shake for
each single shot, such as mirror lock-up
functionality, if available.
1.1 Setting up the Camera
• Set your camera to Aperture priority (A setting) so only the
shutter speed varies between the exposures.
• Select a low ISO, such as ISO 100 or lower.
• Turn o the ash. The ash may try to balance the exposure of
all the images, when the goal is a range of exposures.
• Mount the camera on a tripod whenever possible. Even
though Photomatix Pro oers automatic alignment of hand-
held photos, using a tripod is always better.
Canon Rebel XTi/400D LCD showing
AEB with +/-2 increments selected
AEB settings on a Nikon D80
(3 shots with +/- 2EV)
Praat mee over dit product
Laat hier weten wat jij vindt van de HDR Photomatix Pro 4.1. Als je een vraag hebt, lees dan eerst zorgvuldig de handleiding door. Een handleiding aanvragen kan via ons contactformulier.