J'ai les Exifs avec View EXIF data de Firefox :

Make Canon
Model Canon EOS-1D X
Software Adobe Photoshop Lightroom Classic 7.3 (Windows)
Exposure Time 0.0004s (1/2500)
Aperture ƒ/5.6
Exposure Manual
ISO equivalent 320
Exposure Bias none
Metering Mode Partial
Flash Fired No (enforced)
Focal Length 700.0mm
Color Space sRGB
FocalPlaneXRes 1440
FocalPlaneUnits 10
Exposure Mode Manual
White Balance Auto
LensModel EF500mm f/4L IS II USM +1.4x III
Date 2019-05-24 09:34:21 (no TZ)
Lens EF500mm f/4L IS II USM +1.4x III
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