QUOTE(alcarbo @ Jul 9 2007, 12:44 AM)

mi puoi dire gli iso (e/o exif) della seconda ?

Se hai un Mac scaricati Exif viewer. Gli ISO comunque sono 800, come si vede dagli exif:
Equipment Make: NIKON CORPORATION
Camera Model: NIKON D200
Camera Software: Capture NX 1.1.0 W
Maximum Lens Aperture: f/2.8
Sensing Method: One-Chip Color Area
Color Filter Array Pattern: 7450
Focal Length (35mm Equiv): 21 mm
Image-Specific Properties:
Image Orientation: Unknown
Horizontal Resolution: 300 dpi
Vertical Resolution: 300 dpi
Image Created: 2007:06:29 18:05:24
White Point Chromaticity: 0.3
Exposure Time: 7692307/100000000 sec
F-Number: f/2.8
Exposure Program: Aperture Priority
ISO Speed Rating: 800
Exposure Bias: 0 EV
Metering Mode: Spot
Light Source: Unknown
Flash: No Flash
Focal Length: 14.00 mm
Color Space Information: Uncalibrated
Image Width: 1024
Image Height: 685
Rendering: Normal
Exposure Mode: Auto
Scene Capture Type: Standard
Gain Control: Low Gain Up
Contrast: Hard
Sharpness: Hard
Subject Distance Range: Unknown
ISO Speed Used: 800
Color Mode: COLOR
Image Quality: RAW
White Balance: APPCUSTOM
Image Sharpening: MED.H
Focus Mode: AF-C
ISO Speed Requested: 800
AE Bracket Compensation: 0.0 EV
Tone Compensation: NORMAL
Lens Type: Unknown
Lens Range: 14.0 mm; f/2.8
Auto Focus: Dynamic Area, Center
Shooting/Bracketing Mode: Single Frame/Off
Color Mode: MODE3
Lighting Type: NATURAL
Noise Reduction: OFF
Camera Actuations: 1726
Image Optimization: CUSTOM
Saturation 2: ENHANCED
Saluti
Giovanni