Posts Tagged ‘metering’

A Simple Explanation of the Metering and AE-Lock Features in Your DSLR

Want a better understanding of how the metering and AE-lock features in your DSLR camera work? YouTube photography tutorial channel PhotoUniverse made this simple explanation that explains the concepts using a whiteboard. He quickly steps through evaluative (which uses a database of many “known” photos) and center-weighted metering before spending a good amount of time explaining spot metering and how you can use it in conjunction with AE-Lock to properly expose photographs.

If you’re already adept at handling your DSLR, you probably won’t learn anything new, but this video is great for anyone that’s just starting to dip their toes into more serious photography.

(via PhotoUniverse via Reddit)


P.S. He also shares a common trick used by many photographers for metering on a sunny day: green grass can often work nicely as an 18% gray card.

Apple to Use Face Detection for Exposure Metering and Snappy Autofocus

Apple camera patent for face detection exposure metering

Face detection has become the snapshot photographer’s invaluable assistant in ensuring tack-sharp faces, but soon it’ll be able to add two more job responsibilities to its resume: exposure metering and speedier autofocus. Two patents recently awarded to Apple show that future iOS cameras (perhaps the next iPhone?) will have standard camera features that rely much more on face detection technology. The first patent, titled “Dynamic exposure metering based on face detection“, allows the camera to automatically select faces as the primary target for metering. In more difficult situations — group shots or people standing in front of a crowd, for example — the camera will use factors such as “head proximity” to select the primary subject.
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