The EOS-1Ds body is based around the EOS-1V professional film SLR. From a size point of view the 1Ds body is almost identical to an EOS-1V with the additional powerdrive booster attached. The base of the camera contains the large battery pack and allows for the integration of a vertical (portrait) hand grip and control system. Build quality is superb, the entire body moulded from magnesium alloy with environmental seals around every compartment door, terminal, connector and button.
Canon EOS-1Ds major features summary
Professional EOS Digital SLR
Magnesium body, environmentally sealed, based on EOS-1V
Integrated battery compartment / vertical hand grip
11.4 megapixel CMOS sensor (primary colour filter)
Full frame sensor, no field of view crop / focal length multiplier
Output image size: 4064 x 2704 or 2032 x 1352
JPEG (Fine/Normal), RAW (12-bit)
Simultaneous RAW+JPEG mode (saves RAW plus either Full size or Half size JPEG)
Maximum burst speed of 3 fps for up to 10 JPEG frames or 10 RAW frames
Option to also record a JPEG file when shooting RAW
ISO 100 - 1250 in 1/3 stop steps, ISO 50 available from a custom function
ISO sensitivity bracketing
Same 45-point AF as EOS-1V
Response time similar to the EOS-1V - 57 ms shutter release and 87 ms viewfinder blackout
Evaluative, Partial, Center-weighted, Spot and Multi-spot metering
Shutter speed range: Bulb, 30 - 1/8,000 sec (1/250 sec flash X-sync)
Aperture range: F91 - F1
Noise reduction can be enabled for exposures 1/15 sec or slower
IEEE 1394 (Firewire) connectivity
CF Type I or II (inc. IBM Microdrive)
Hybrid Auto White balance combines external white balance sensor and main sensor
White balance bracketing
Up to three parameter sets: tone (gamma) curve, sharpening, JPEG compression ratio
Selectable 'colour matrix' settings define colour space (sRGB / Adobe RGB) and balance
21 custom functions, 26 personal functions, which can be stored into 'function groups'
Bracketing of exposure (shutter / aperture), white balance and ISO sensitivity
Voice annotation capability (built-in microphone)
Illuminated status LCD's
Supplied RAW conversion application (File Viewer Utility)
Supplied remote capture (tethered operation) software
Double battery charger
New features / updates since the EOS-1D
Full-frame 11 megapixel CMOS sensor
Continuous shooting down to 3 fps, max 10 images
ISO range 100 - 1250, ISO 50 selectable from custom function
Noise reduction takes effect from 1 sec (1/15 sec for the EOS-1D)
Personal functions can be set via in-camera menu
JPEG compression now represented as numbers rather than a ruler
FAT32 filesystem support for Compact Flash cards greater than 2 GB
Playback magnification now available
Images can be tagged with a unique 'signature' for use with Data Verification Kit
Improved battery life (thanks to CMOS sensor)
Fastest shutter speed down to 1/8,000 sec (1/16,000 sec for the EOS-1D)
X-Sync speed down to 1/250 sec (1/500 sec for the EOS-1D)
Eleven megapixels
2424 Shutter Actuations as measured by ShutterCounter.com