想买架数码相机，300万象素以上的觉得太贵，到future shop 的网站上查了一下200万象素级的相机，觉得A20还可以，分辨率可达1636X1236，主要参数如下所示。那位大虾用过，请给点意见。谢了先。


Aperture f/2.7 - 4.8
Auto OFF Mode Yes
Autofocus Auto
Battery Type 4 AA
Built-In Flash Yes
Delete Function Yes
Digital Media Type Compact Flash
Effective Image Size 1636X1236
Exposure Control Evaluative Metering
Exposure Range + / - 2 EV in 1/3 increments
External Flash Compatible No
Flash Control Yes
Focus Modes Auto
Focus Range 6.7" - Infinity
I/O Terminal Yes
Image Sensor Size 2.1 mpixel
Interface USB
ISO Sensitivity 100 automatically adjusted by camera
LCD Monitor 1.8" 117k pixels
Lens 3x optical (38-105 35mm)
Media Card Size Included 8MB
Operating System Win 98 Mac
Optical Viewfinder Yes
Playback Menu Yes
Resolution Rating Medium
Self-Timer Yes
Shutter Speed 1 - 1/1500 second
Video Output Yes