Camera Rocket Review Our evaluation of 40D vs 100D

Image Quality

RAW image quality independent of lens

EOS 40D
9.3
EOS 100D
9.7
DxOMark Low light, DxOMark Color depth and DxOMark Dynamic range

Focusing

How fast and easily does the camera nail focus

EOS 40D
8.4
EOS 100D
6.5
Focus lag, cross type focus points and focus points

Responsiveness

How much delay is there between you and your photo?

EOS 40D
9.2
EOS 100D
8.2
Focus lag, continuous shooting and Startup delay

Reviews

What do the experts think?

EOS 40D
9.3
EOS 100D
9.1
Reviews from techradar.com, reviews.cnet.com, trustedreviews.com and dpreview.com

No winner declared

Too close to call

Benchmarks Real world tests of EOS 40D vs 100D

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

EOS 40D
703 ISO
EOS 100D
843 ISO

Focus lag Delay between fully pressing shutter to image capture

EOS 40D
128 ms
EOS 100D
264 ms

Shutter lag Delay to take a photo when prefocused

EOS 40D
61 ms
EOS 100D
76 ms

Startup delay Delay from power on to first photo

EOS 40D
400 ms
EOS 100D
600 ms

Continuous shooting Delay between fully pressing shutter to image capture

EOS 40D
6.5 fps
EOS 100D
4 fps

Battery life How many photos per battery charge (CIPA)

EOS 40D
1,100 photos
EOS 100D
380 photos

Features Key features of the EOS 40D  vs 100D 

Megapixels Maximum resolution images are captured at

EOS 40D
10.1 MP
EOS 100D
17.9 MP

Max ISO Maximum light sensitivity of the sensor

EOS 40D
3,200 ISO
EOS 100D
25,600 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

EOS 40D
0.59x
EOS 100D
0.54x

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

EOS 40D
32.6 microns
EOS 100D
18.5 microns

Reviews Word on the street

EOS 40D  vs 100D 

7.8
7.6
Canon also added an sRaw format, which shoots small, 2.5-megapixel raw images.
EOS 40D

8.5
8.0
But the 40D is better made, more durable, with more features, much faster continuous shooting and a more 'professional' control layout.
EOS 40D

Overall

8.7 Out of 10
8.2 Out of 10

Specifications Full list of technical specs

sensor

EOS 40D  vs
100D 
Type CMOS CMOS
Megapixels 10.1 MP 17.9 MP
Resolution 3888 x 2592 5184 x 3456
Size APS-C APS-C
Area 22.2 x 14.8 mm 22.3 x 14.9 mm
Crop factor 1.6x 1.6x
Pixel size 32.6 microns 18.5 microns
Light sensitivity 100 ISO to 1,600 ISO 100 ISO to 12,800 ISO
Light sensitivity (Boost) 1,600 ISO to 3,200 ISO Unknown to 25,600 ISO
Codecs
RAW
JPEG
CR2 14bit
Self cleaning sensor Yes Yes

focus system

Type Phase detection Hybrid detection
Focus points 9 9
Cross type focus points 9 1

viewfinder

Viewfinder mirror Opaque Opaque
Viewfinder Yes Yes
Type Pentaprism Pentamirror
Coverage 95% 95%
Magnification 0.95x 0.87x
Viewfinder size 0.59x 0.54x

performance

Max continuous shooting 6.5 fps 4 fps
Battery life 1,100 380
Continuous shooting
6.5 fps, JPEG
4 fps, JPEG
Focus lag 128 ms 264 ms
Shutter lag 61 ms 76 ms
Startup delay 400 ms 600 ms

video

EOS 40D  vs
100D 
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 Yes

display

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

shutter

Min 30 s 30 s
Max 1/8000 s 1/4000 s

form factor

Size 146 x 108 x 74 mm 117 x 91 x 69 mm
Thickness 74 mm 69 mm
Weight 822 g 407 g
Is weather sealed No No

features

Includes a GPS No No
Supports HDR No Yes
Automatic panorama No No
Create realistic 3D images No No
Image stabilization
Canon EOS 40D
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Canon EOS 100D
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