How to use the multiple exposure function in 5D3!

The number of multiple exposures of the Canon 5D III multiple exposure function ranges from 2 to 9, and there are four image overlapping methods available: "Additive", "Average", "Bright" and "Dark". There are actually two types of multiple exposures on the 5D3, one is the function/control priority mode, and the other is the continuous shooting priority mode. In the function/control priority mode, the 5D3 will record each exposure separately, and finally synthesize all the exposure data together.

In continuous shooting priority mode, the 5D III no longer stores it separately. Instead, the information obtained from each exposure is directly superimposed and processed in the processor, and photos are produced based on the final data. This is a little closer to the multiple exposures of the original film. In the first mode, each exposure can be saved as a separate photo, and the photographer can also view the images during the multiple exposure process. In the second mode, only the final photo can exist, and the captured images cannot be viewed and controlled during the continuous shooting process. This method is more suitable for rapid creation. Function/control priority is more suitable for planned and precise shooting.

Multiple Exposure Control Turn the dial to select the "Multiple Exposure Control" option. There will be four options available, including "Additive", "Bright", and "Dark". What is selected in this menu is Algorithm for merging multiple exposures.

Adding - Select this option and each single exposure will be added together, just like in the film era.

Averaging - —Select this option to automatically control the exposure of the background each time a single exposure is taken to obtain a standard exposure result.

Bright —Select this option to combine multiple exposures. The bright part of the result is retained in the photo. For example, when photographing the moon, select this option to get a picture of the moon hanging high in the night sky.

Dark - This option does exactly the same thing as the "Bright" option. On the contrary, you can keep the dark parts of the multiple exposure results when shooting. This is a very important option, and we need to be specific here: "Addition" is to simply overlap multiple images, just like a film camera. Since there is no exposure control, the photos after synthesis are brighter than the photos before synthesis. This requires a simple prediction before shooting and appropriately reducing the exposure compensation, otherwise it is more likely to be overexposed during "average" synthesis. Control the brightness of the photo at any time, automatically perform negative exposure compensation according to the number of multiple exposure shots, and adjust the composite photo to the appropriate exposure. By selecting "Additive" or "Average", you can also change it by, for example. The soft focus effect is obtained by taking multiple exposure shots at the focus position.

The remaining "bright" and "dark" are compared with the basic image and the image synthesized above it, and only the brighter one is synthesized. The (darker) part is suitable for use when compositing images that want to emphasize the outline of the main subject. It is suitable for use when creating subjects with obvious light and dark relationships, making the subject more vivid and clear. In the exposure times option, we can set it. The number of exposures during multi-exposure shooting can be selected from 2 to 9 in 5D Mark III.