Camera Rocket Review Our evaluation of 1Ds Mark III vs 1D X

Image Quality

RAW image quality independent of lens

DxOMark Low light, DxOMark Color depth, DxOMark Dynamic range and 1 more

Focusing

How fast and easily does the camera nail focus

focus points

Responsiveness

How much delay is there between you and your photo?

continuous shooting

Reviews

What do the experts think?

Reviews from dpreview.com, techradar.com, 1001noisycameras.com and reviews.cnet.com

No winner declared

Too close to call

Benchmarks Real world tests of EOS 1Ds Mark III vs 1D X

Low light image quality Highest ISO setting that still achieves great image quality

EOS 1Ds Mark III
1,663 ISO
EOS 1D X
2,786 ISO

Resolution Results from photos of standard resolution charts

EOS 1Ds Mark III
2,100 LPH
EOS 1D X
2,800 LPH

Shutter lag Delay to take a photo when prefocused

Continuous shooting Delay between fully pressing shutter to image capture

EOS 1D X
14 fps

Battery life How many photos per battery charge (CIPA)

EOS 1Ds Mark III
1,800 photos
EOS 1D X
1,500 photos

Color depth The number of variations of color the camera can capture

EOS 1Ds Mark III
24.0 bits
EOS 1D X
23.8 bits

Features Key features of the EOS 1Ds Mark III  vs 1D X 

Megapixels Maximum resolution images are captured at

EOS 1D X
18.1 MP

Max ISO Maximum light sensitivity of the sensor

EOS 1Ds Mark III
3,200 ISO
EOS 1D X
204,800 ISO

Focus points How many different points the camera can focus on

Screen size Larger screens make it easier to preview and review photos

Viewfinder size Large viewfinders are brighter and more comfortable to use

Pixel size How much area of the sensor is dedicated to each pixel

EOS 1Ds Mark III
41.1 microns
EOS 1D X
47.8 microns

Specifications Full list of technical specs

sensor

EOS 1Ds Mark III  vs
1D X 
Type CMOS CMOS
Megapixels 21 MP 18.1 MP
Resolution 5616 x 3744 4912 x 3680
Size Full frame Full frame
Area 36 x 24 mm 36 x 24 mm
Crop factor 1.0x 1.0x
Pixel size 41.1 microns 47.8 microns
Light sensitivity 100 ISO to 1,600 ISO 100 ISO to 51,200 ISO
Light sensitivity (Boost) 1,600 ISO to 3,200 ISO 50 ISO to 204,800 ISO
Codecs
RAW
JPEG
Self cleaning sensor Yes Yes
Tested vertical resolution 2,100 LPH 2,800 LPH
Tested horizontal resolution 2,000 LPH 2,800 LPH

focus system

Type Contrast detection Phase detection
Focus points 45 61
Cross type focus points 19 41

shutter

Min 30 s 30 s
Max 1/8000 s 1/8000 s

form factor

Size 150 x 160 x 80 mm 158 x 164 x 83 mm
Thickness 80 mm 83 mm
Weight 1,385 g 1,530 g
Is weather sealed Yes Yes

features

Includes a GPS No No
Supports HDR No Yes
Automatic panorama No No
Create realistic 3D images No No
Image stabilization

video

EOS 1Ds Mark III  vs
1D X 
Video None 1920 x 1080 @ 30 fps
Shoots video in 24p N/A Yes
Shoots high speed video N/A No
External mic jack N/A 3.5mm
Autofocus while shooting video N/A Contrast detection
Autofocus type N/A Contrast detection
Autofocus supports continuous N/A No

display

Type LCD LCD
Size 3" 3.2"
Resolution 230 k dots 1,040 k dots
Has a touch screen No No
Has a flip out screen No No
Supports live view Yes Yes

viewfinder

Viewfinder mirror Opaque Opaque
Viewfinder Yes Yes
Type Pentaprism Pentaprism
Coverage 100% 100%
Magnification 0.76x 0.76x
Viewfinder size 0.76x 0.76x

performance

Max continuous shooting 5 fps 14 fps
Battery life 1,800 1,500
Continuous shooting
5 fps @ 5616 x 3744, JPEG, 56 shots
14 fps
Shutter lag 45 ms 56 ms
Canon EOS 1Ds Mark III
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Canon EOS 1D X
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