For a full sunlight portrait image, what's the need for using ISO 200 instead of ISO 100?
Here's the exif data on a pic I just saw of a model shot in outdoor.
Camera Info
Device: Nikon D300
Lens: VR 70-200mm F/2.8G
Focal Length: 135mm
Focus Mode: AF-S
AF-Area Mode: Single
Aperture: F/2.8
Shutter Speed: 1/1250s
Exposure Mode: Aperture Priority
Exposure Comp.: -0.7EV
Metering: Spot
ISO Sensitivity: ISO 200
White Balance: Auto, 0, 0
Color Space: Adobe RGB
If using ISO 100 for this shot, it would halve the shutter speed to 1/625s which is not a problem, so why not use ISO 100 in this case? Anything i'm not seeing here?
Here's the exif data on a pic I just saw of a model shot in outdoor.
Camera Info
Device: Nikon D300
Lens: VR 70-200mm F/2.8G
Focal Length: 135mm
Focus Mode: AF-S
AF-Area Mode: Single
Aperture: F/2.8
Shutter Speed: 1/1250s
Exposure Mode: Aperture Priority
Exposure Comp.: -0.7EV
Metering: Spot
ISO Sensitivity: ISO 200
White Balance: Auto, 0, 0
Color Space: Adobe RGB
If using ISO 100 for this shot, it would halve the shutter speed to 1/625s which is not a problem, so why not use ISO 100 in this case? Anything i'm not seeing here?