page_title: Canon AL-1
hierarchical_section_title: Canon AL-1
caption_attribution_description: English: Detail of the part-silvered mirror in a Canon AL-1. The etchings in the mirror allowed light to pass through onto a secondary mirror, which diverted it onto the CCD array used for the "Quick-Focus" focus-confirmation system.
context_page_description: The Canon AL-1 was an FD mount, 35mm single-lens reflex camera introduced in March 1982. Its main feature was the "Quick Focus" focus-assist system that was aimed at those who had trouble focusing through the viewfinder—either novices, or those with poor eyesight—and was intended to head off competition from the first full-autofocus cameras from other manufacturers, such as the Pentax ME F.
context_section_description: The Canon AL-1 was an FD mount, 35mm single-lens reflex camera introduced in March 1982.  Its main feature was the "Quick Focus" focus-assist system that was aimed at those who had trouble focusing through the viewfinder—either novices, or those with poor eyesight—and was intended to head off competition from the first full-autofocus cameras from other manufacturers, such as the Pentax ME F.
caption: The mirror of a Canon AL-1, showing the etched gaps in the mirror coating that allow light to reach the phase-detection system.
exif: {"Image Make": "NIKON CORPORATION", "Image Model": "NIKON D40", "Image Orientation": "Horizontal (normal)", "Image XResolution": "300", "Image YResolution": "300", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop CS3 Windows", "Image DateTime": "2008:05:13 12:36:22", "Image YCbCrPositioning": "Co-sited", "Image ExifOffset": "228", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "978", "Thumbnail JPEGInterchangeFormatLength": "8249", "EXIF ExposureTime": "1/100", "EXIF FNumber": "28/5", "EXIF ExposureProgram": "Program Normal", "EXIF ISOSpeedRatings": "1600", "EXIF ExifVersion": "0221", "EXIF DateTimeOriginal": "2008:05:13 12:25:59", "EXIF DateTimeDigitized": "2008:05:13 12:25:59", "EXIF ComponentsConfiguration": "YCbCr", "EXIF CompressedBitsPerPixel": "2", "EXIF ExposureBiasValue": "-1/3", "EXIF MaxApertureValue": "5", "EXIF MeteringMode": "Spot", "EXIF LightSource": "Unknown", "EXIF Flash": "Flash did not fire", "EXIF FocalLength": "55", "EXIF SubSecTime": "40", "EXIF SubSecTimeOriginal": "40", "EXIF SubSecTimeDigitized": "40", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "600", "EXIF ExifImageLength": "600", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "EXIF InteroperabilityOffset": "852", "EXIF SensingMethod": "One-chip color area", "EXIF FileSource": "Digital Camera", "EXIF SceneType": "Directly Photographed", "EXIF CVAPattern": "[0, 2, 0, 2, 2, 1, 1, 0]", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF DigitalZoomRatio": "1", "EXIF FocalLengthIn35mmFilm": "82", "EXIF SceneCaptureType": "Standard", "EXIF GainControl": "High gain up", "EXIF Contrast": "Normal", "EXIF Saturation": "Hard", "EXIF Sharpness": "Hard", "EXIF SubjectDistanceRange": "0"}