《飞水红叶》

candee

在我电脑上显示的EXIf信息是：曝光模式是光圈优先而非自动模式，测光模式是点测光。本想上传一张截图，但无法上传。
九色鹿 发表于 2013-1-23 08:43

那是曝光程序是光圈优先，曝光模式是自动。谢谢版主的分析。
这是全部的EXIF信息，没有比这个信息再全的了。

[Image]
Make = NIKON CORPORATION
Model = NIKON D3X
Orientation = top/left
X Resolution = 240
Y Resolution = 240
Resolution Unit = inch
Software = Adobe Photoshop CS3 Windows
Date Time = 2013-01-20 11:02:39
Artist =                                    
YCbCr Positioning = centered
Copyright =
Exif IFD Pointer = Offset: 356
GPS Info IFD Pointer = Offset: 1008

[Camera]
Exposure Time = 1/2500"
F Number = F2.8
Exposure Program = Aperture priority
ISO Speed Ratings = 200
Exif Version = Version 2.21
Date Time Original = 2013-01-18 17:14:05
Date Time Digitized = 2013-01-18 17:14:05
Components Configuration = YCbcr
Compressed Bits Per Pixel = 4
Exposure Bias Value = ±0EV
Max Aperture Value = F2.83
Subject Distance = Unknown
Metering Mode = Spot
Light Source = unknown
Flash = Off
Focal Length = 200mm
Subsec Time = 0.576"
Subsec Time Original = 0.22"
Subsec Time Digitized = 0.22"
Flashpix Version = Version 1.0
Color Space = sRGB
Exif Image Width = 1000
Exif Image Height = 1200
Interoperability IFD Pointer = Offset: 976
Sensing Method = One-chip color area sensor
File Source = DSC
Scene Type = A directly photographed image
CFA Pattern =
Custom Rendered = Normal process
Exposure Mode = Auto exposure
White Balance = Auto white balance
Digital Zoom Ratio = 1x
Focal Length In 35mm Film = 200mm
Scene Capture Type = Normal
Gain Control = None
Contrast = Normal
Saturation = Normal
Sharpness = Normal
Subject Distance Range = unknown

[Interoperability]
Interoperability Index = ExifR98
Interoperability Version = Version 1.0

[Thumbnail Info]
Compression = JPEG Compressed (Thumbnail)
X Resolution = 72
Y Resolution = 72
Resolution Unit = inch
JPEG Interchange Format = Offset: 1122
JPEG Interchange Format Length = Length: 8638

[Thumbnail]
Thumbnail = 133 x 160

九色鹿

AE模式：　　AE全称为Auto Exposure，即自动曝光。模式大约可分为光圈优先AE式，快门速度优先AE式，程式AE式，闪光AE式和深度优先AE式。光圈优先AE式是由拍摄者人为选择拍摄时的光圈大小，由相机根据景物亮度、CCD感光度以及人为选择的光圈等信息自动选择合适曝光所要求的快门时间的自动曝光模式，也即光圈手动、快门时间自动的曝光方式。这种曝光方式主要用在需优先考虑景深的拍摄场合，如拍摄风景、肖像或微距摄影等。
Exposure Program = Aperture priority  曝光程序：光圈优先
Exposure Mode = Auto exposure    曝光模式：AE模式 自动曝光

小善

摄影就是光与影的记忆组合，抛开纠结的层面不谈------比如美国人穿防暴服研究我们的手摇爆米花神器，但从作品来看，在白与黑的光影之间，点缀上了色彩，确实是一副美轮美奂的作图，欣赏。