martin sans affut et sans lumiere non plus

[Tiebin]

Bonjour !

Belle photo et bel oiseau !

Mais comment faites-vous pour déterminer la distance exacte du sujet avec les données de l'appareil ?

Merci a vous !

Dans les exifs, avec exifs viewer mais uniquement avec 1dmarkIV et 7D

Exif Sub IFD

* Exposure Time (1 / Shutter Speed) = 1/640 second ===> 0.00156 second
* Lens F-Number / F-Stop = 28/5 ===> ƒ/5.6
* Exposure Program = manual control (1)
* ISO Speed Ratings = 200
* Exif Version = 0221
* Original Date/Time = 2010:07:26 15:46:44
* Digitization Date/Time = 2010:07:26 15:46:44
* Shutter Speed Value (APEX) = 5994/643
Shutter Speed (Exposure Time) = 1/640 second
* Aperture Value (APEX) = 4946/995
Aperture = ƒ/5.6
* Exposure Bias (EV) = 0/1 ===> 0
* Max Aperture Value (APEX) = 4/1 ===> 4
Max Aperture = ƒ/4
* Distance to Subject = 869/100 m
* Metering Mode = partial (6)
* Flash = Flash did not fire, compulsory flash mode
* Focal Length = 500/1 mm ===> 500 mm
* Last Modified Subsecond Time = 59
* Original Subsecond Time = 59
* Digitized Subsecond Time = 59
* Colour Space = 65535
* Image Width = 980 pixels
* Image Height = 669 pixels
* Focal Plane X-Resolution = 163200/43 ===> 3795.35
* Focal Plane Y-Resolution = 191311/49 ===> 3904.31
* Focal Plane X/Y-Resolution Unit = inch (2)
* Custom Rendered = normal process (0)
* Exposure Mode = manual exposure (1)
* White Balance = manual (1)
* Scene Capture Type = standard (0)