Does a teleconverter show up in Canon DSLR EXIF data?
Asked 11/11/2013
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If I use a teleconverter/extender on a Canon DSLR, how is that reflected in the EXIF metadata? Will the recorded focal length and aperture be adjusted to the effective values, and is there any EXIF field that indicates an extender was attached? I'm interested in both Canon extenders and third-party teleconverters.
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
12y ago
2 Answers
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Indeed the EXIF data records the use of a teleconverter. see the attached picture.
Here is a screenshot of the EXIF data of a photo as displayed by Apple Aperture. The labels are in German, but the values speak for themselves.
The picture was taken using a 200mm lens with the Canon 1.4x teleconverter (II), the resulting focal length of 280mm is recorded.
Originally by user20069. Source · Licensed CC BY-SA 4.0
user20069
12y ago
0
Generated from our catalog & community — verify before relying on it.
Usually, yes—but it depends on the teleconverter.
With Canon extenders, EXIF typically reflects the effective focal length and maximum aperture, and the lens metadata may also identify that an extender was used. For example, a 200mm lens with a 1.4x extender is commonly recorded as 280mm, and the effective aperture is adjusted accordingly.
With third-party teleconverters, behavior can vary. Based on the reports here, Canon bodies still record the effective focal length and aperture correctly, but the lens field may show only the base lens and not explicitly mention the teleconverter.
So in practice:
- focal length: usually recorded as the multiplied/effective focal length
- aperture: usually recorded as the effective aperture
- explicit teleconverter flag/identifier: typically present with Canon extenders, but not guaranteed with third-party units
If you need the extender itself to be identifiable in metadata, first-party Canon extenders are more likely to provide that.
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