Abstract: A focus calibration apparatus allows fine adjustments to be made to the focal distance between a camera lens and sensor, in particular to take into account small changes in the mechanical tolerances such as when changing lenses. The calibration apparatus has a simple mechanism, like a focus ring, that a user can easily manipulate to simplify and speed the lens calibration process.

Abstract: Embodiments provide a video camera that can be configured to highly compress video data in a visually lossless manner. The camera can be configured to transform blue and red image data in a manner that enhances the compressibility of the data. The data can then be compressed and stored in this form. This allows a user to reconstruct the red and blue data to obtain the original raw data for a modified version of the original raw data that is visually lossless when demosacied. Additionally, the data can be processed in a manner in which the green image elements are demosaiced first and then the red and blue elements are reconstructed based on values of the demosaiced green image elements.

Abstract: The invention relates to image focus. In particular, it relates to a focus assist system that conveys focus level data to a user. There are a wide variety of different display methods, including, but not limited to, graphs, highlights, symbols, and varied levels of brightness or color.

Abstract: The invention relates to image focus. In particular, it relates to a focus assist system that conveys focus level data to a user. There are a wide variety of different display methods, including, but not limited to, graphs, highlights, symbols, and varied levels of brightness or color.

Abstract: A video camera can be configured to highly compress video data in a visually lossless manner. The camera can be configured to transform blue and red image data in a manner that enhances the compressibility of the data. The data can then be compressed and stored in this form. This allows a user to reconstruct the red and blue data to obtain the original raw data for a modified version of the original raw data that is visually lossless when demosaiced. Additionally, the data can be processed in a manner in which the green image elements are demosaiced first and then the red and blue elements are reconstructed based on values of the demosaiced green image elements.