One of the key differences between the SX10 and the SX1 - enabled by the new CMOS sensor - is that the SX1 offers 1080p (1920x1080) capture at 30 frames per second. The movies are recorded in Quicktime format, and the files are actually not heavily compressed, meaning the resulting videos are full of detail, but also that file sizes can get very large - you should get a large card if you plan to shoot a lot of HD video. If HD isn't needed 640x480 and 320x240 video sizes are also available, the latter can be recorded at 60 fps.
To record a video, all you need to do is press the prominent movie recoding button to the right of the EVF in any mode (other then playback) (movies will be captured with the current video setting specified in the FUNC menu). There is also a dedicated video recording setting on the mode dial, which reduces the the number of options available in the menu to only those applicable to movie recording. You can also use many of the parameters available in stills mode, including (if you really want to) the 'special effects' in the MyColors menu.
Zooming, AF and IS are all available during movie recording, and they operate very quietly, adding no sound during filming. The AF on the SX1 IS is quite slow, and this is especially noticeable during movie recording, meaning it is a good idea to prefocus before starting video recording if you don't want blurry results. You can also shoot a still image during movie recording, which causes a pause in the video, and records the still image in a separate file.
Video quality is generally quite good, especially in 1080p mode, though it does display the same problems as still images in terms of image noise, and noise reduction at high ISO causing image softness. Being a CMOS sensor, the SX1 IS is also prone to image tearing during quick panning.
|The SX1 IS has large dedicated video recording button situated to the right of the viewfinder. Pressing this button will begin video recording in any shooting mode. You can also take stills during movie recording, doing so will cause a brief pause in your video and save the still image to a separate file. The button is in the same location as previous Canon super zoom cameras, which means it can be awkward to use depending on the size of your hands.|
|There is a dedicated movie mode on the main mode dial too, which is where the screen captures here were taken. The main difference is that you can preset a couple of options. As with stills recording you can choose the amount of information overlaid on the live preview image.|
|There is a simple brightness control which can be used during the recording of a clip (the zoom can also be used). In movie mode (as opposed to just pressing the movie button) you can preset the brightness level.|
|In order to record 1080p videos (1920x1080) the camera has to be set to wide aspect ratio. In wide aspect ratio mode you can only record in 1080p mode, and stills are recorded in a wide aspect ratio too - at 8mp.|
|There is a cut down record menu in Movie mode.|
|As with stills there are various options for how movies are displayed in playback mode, including this very detailed view complete with histogram.|
|In playback mode you get some basic controls for playing movies, slow motion, fast forward and rewind and edit.|
|Choose edit and you can trim the start and end of the movie clip, and save the result as a new file or overwrite the existing clip.|