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NKRemote has flexible settings for auto bracketing (taking a sequence of shots using different exposure settings) which simplify the taking of shots which are later combined together to form a single HDR (high dynamic range) image. To enable auto bracketing select the "Auto-bracket" checkbox and then click on the "Settings..." button to display the auto bracket settings dialog below:
You can set the number of shots in the sequence using the first dropdown list. Then set the number of exposure stops should separate each shot. This can be 1/3, 2/3, 1, 1 1/3, 1 2/3 or 2 stop per shot depending on your camera's settings (if your camera is set to use 1/2 stop increments instead of 1/3 stop increments selecting a value of 1/3 or 2/3 stop increments will result in 1/2 stop increments being used).
The different exposures are set using the camera's exposure compensation control if the one of the auto exposure modes is selected.
Please note: The range of the sequence is limited by the exposure compensation range of the camera.
If manual exposure mode is selected the exposure will be varied using either the shutter speed or the aperture according to the settings in this dialog. Normally it is better to keep the aperture constant (and hence the depth of field) and vary the shutter speed.
NKRemote can optionally run a command at the end of the auto bracket sequence to combine the shots. To do this click on the "Execute command at end of auto bracket sequence" checkbox and enter the name of the program or script to run. In the screenshot above the script "photomatix3.bat" has been entered. This will run the Windows batch file "photomatix3.bat" which combines the images using Photomatix Pro (which can be purchased from http://www.hdrsoft.com) and displays the result in BreezeBrowser Pro (http://www.breezesys.com/BreezeBrowser ). The batch file can be found in the NkRemote installation folder (usually C:\Program Files\BreezeSys\NkRemote) and makes use of the command line interface for Photomatix Pro. Please use photomatix3.bat with Photomatix Pro 3.1 and photomatix2.bat with Photomatix Pro 2.
Suggested procedure for auto bracketing:
Auto exposure bracketing is particularly useful for product shots and for taking pictures of the interiors of buildings. The photos below compare the results from a single exposure of the interior of a church with an image which was blended from seven separate exposures taken using the auto bracketing feature:
Photo of the interior of St Andrews Church, Sherborne St John, Hampshire, England.
(The image on the right was created by blending the auto bracketed images using a separate image editor which is not part of NKRemote)
The seven shot auto bracket sequence used to create the blended exposure above: