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Canon Patent Application: IBIS improvements while shooting HDR images
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Canon Patent Application: IBIS improvements while shooting HDR images

During automatic exposure bracketing (AEB) for HDR images, with IBIS and OIS engaged, the position of each image may be different because the camera has shifted slightly it's position as it's attempting to keep the image stable.

So as the image stabilization compensates for your movement, the angle of view of the resulting image becomes smaller once you merge and stack all those images together.  This of course could be exasperated if you are doing far more than 3 image AEB as well.

Canon in this patent application is looking at optimizing AEB and IBIS so that it minimizes the amount of shift that occurs from image to image.

As the amount of movement of the image for alignment increases, the angle of view that can be taken at the same time becomes smaller, so the size of the composite image (HDR image) is larger than the size of the image obtained in each shooting during HDR shooting. Will also be smaller.  An object of the present invention is to secure a sufficient image blur correction range while suppressing fluctuations in the angle of view in an imaging device capable of taking a plurality of times for image acquisition used for image composition

Of course, this is more an issue with ultra wide-angle lenses, because you are paying for those lenses to be as wide as possible so any improvement here is certainly welcomed.

Japan Patent Application 2021-089387

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