3月2号佳能上海发布会已经确定将会发布5D MARK III,海外网站canonrumors.com已经流出了5D MARK III 谍照和相关参数：




核心参数：
拥有2230万CMOS，
61点AF（41个十字），
63区测光，
DIGIC 5+单处理器，
6张连拍，
100%视野取景器，
感光度100-25600（向下扩展50，向上102400），
3.2寸LCD，
多重曝光功能，
15万次快门，
HD摄像，
HDR模式，
防水防尘机身

更多参数：

Available Colours – Black
Megapixels – 22MP
Sensor Size – 36 x 24mm
ISO/Sensitivity – 100 – 25600
Autofocus Points – 61 points
Lens Mount – Canon
LCD Size – 3.2″
Liveview – Yes
Viewfinder – Optical TTL
Min Shutter Speed – 30 sec
Max Shutter Speed – 1/8000 sec
Continuous Shooting Speed – 6 fps
Self Timer – 10 sec, 2 sec
Metering – Centre-weighted, Spot, Evaluative, Partial
Video Resolution – Full HD 1080
Memory Type – Compact Flash
Connectivity – USB 2, HDMI, Mic Input, Wireless (optional)
Battery – LP-E6
Battery Type – Lithium-ion
Charger – Includes Li-Ion Charger
File Formats – AVI, RAW, H.264, MOV, MPEG-4
Dimensions – 152 x 116 x 76mm
Box Contents – Battery Pack LP-E6 .. Battery Charger LC-E6 .. AV Cable AVC-DC400ST .. Interface Cable IFC-200U .. Eyecup Eg .. Wide Strap EWEOS5DMKIII .. CR1616 Lithium Battery+
资料来源：http://www.canonrumors.com/2012/03/5d-mark-iii-full-spec-list/