The time that the lens was open during exposure, in a string, such as "1/250 seconds".
SDKs
- iOS 9.0+
- macOS 10.13+
- Mac Catalyst 13.0+
Framework
- Core Spotlight
Declaration
@property(copy) NSString *exposureTimeString;
Instance Propertyexposure
exposure
See Also
Describing Images
ISOSpeedThe ISO speed setting for the camera at the time the image was captured.
acquisitionThe manufacturer of the device that was used to capture the image.
acquisitionThe model of the device that was used to capture the image.
apertureThe size of the lens aperture at the time the image was captured, as a log-scale APEX value.
bitsThe number of bits per sample.
cameraThe owner of the camera used to capture the image.
colorThe color space model used in this image, such as RGB, CMYK, YUV, or YCbCr.
flashA value that indicates if the flash was used to capture the image.
focalThe actual focal length of the lens in millimeters.
focalA value that indicates if the focal length is 35mm.
layerAn array that contains the names of the various layers in the file.
lensThe model of the lens used to capture this image.
orientationThe orientation of the data.
pixelThe total number of pixels in the image.
pixelThe height of the item, such as image or video frame height, in pixels.
pixelThe width of the item, such as image or video frame width, in pixels.
whiteThe white balance setting of the camera when the image was acquired.
EXIFGPSVersionThe version of GPS Info IFD header that was used to generate the metadata for the image.
EXIFVersionThe version of the EXIF header that was used to generate the metadata for the image.
exposureThe mode that was used for the exposure for the image.
exposureThe class of the program used by the camera to set exposure when the image is captured.
exposureThe time that the lens was open during exposure, in seconds.
fThe focal length of the lens divided by the diameter of the aperture when the image was captured.
hasIndicates if the image file has an alpha channel.
maxThe smallest F number of the lens.
meteringThe metering mode.
profileThe name of the color profile used for the image.
redA value that indicates if red-eye reduction was used when the image was captured.
resolutionThe resolution height of this image in DPI.
resolutionThe resolution width of this image in DPI.