Canon EOS 550D vs Pentax K-3

(106)
(71)
Canon EOS 550D
Pentax K-3

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Reasons For

8 Reasons For
Bigger optical zoom Edit
The Canon EOS 550D is a 5.6xx optical zoom digital camera. That's 5.26x bigger than the Pentax K-3 (0.34xx). Read more

The optical zoom of a camera is a measure of how much the camera can zoom in to the subject using the camera's lens system. An optical zoom is superior to a digital zoom because the zoom is achieved using the optics of lens which means that the full extent of the digital sensor is always used to capture the image.

A larger optical zoom allows you to zoom in on the subject without having to move closer. Compared to a digital zoom, using an optical zoom does not result in a loss of image quality.

Vastly smaller closest focusing distance Edit
The Canon EOS 550D has a closest focusing distance of 0.25mm, however the Pentax K-3 is a 0.4mm closest focusing distance digital camera (0.15m larger).
0.99s shorter flash sync-speed Edit
The Canon EOS 550D has a flash sync-speed of 0.01ss, but the Pentax K-3 is a 1ss flash sync-speed digital camera (0.99s longer).
38% wider field of view Edit
The Canon EOS 550D is a 160%% field of view digital camera. That's 60% wider than the Pentax K-3 (100%%).
185g lighter Edit
The Canon EOS 550D has a weight of 530gg, but the Pentax K-3 is a 715gg digital camera (185g heavier). Read more

The camera's weight will depend on the type and size of camera. Compact cameras are usually the lightest while digital SLRs will be heavier. Also consider the number and weight of lenses to take when using a SLR.

The lower the camera weight, the easier it will be to carry around and it will also reduce your hand luggage weight when flying.

15.5mm thinner Edit
The Canon EOS 550D is a 62mmmm deep digital camera. That's 15.5mm thinner than the Pentax K-3 (77.5mmmm).
Narrower Edit
The Canon EOS 550D is a 128.8mmmm wide digital camera. That's 2.7mm narrower than the Pentax K-3 (131.5mmmm).
Twenty-one more awards
The Canon EOS 550D has 22 awards from expert review sites, whereas the Pentax K-3 has 1 award.
12 Reasons For
Higher megapixel count Edit
The Pentax K-3 has a megapixel count of 23.35MPMP, but the Canon EOS 550D is only an 18MPMP digital camera (5.35MP lower). Read more

The resolution of the images a digital camera produces is measured in megapixels (MP). One megapixel is equal to 1 million pixels and is a result of the pixel width multiplied by the pixel height of the image. While a higher image resolution generally results in sharper images, only a relatively low megapixel count is required when printing the image at a small size or to display it on a computer screen.

A sensor with more megapixels will be able to capture more detailed photos and the image will appear sharper. Images with more megapixels can also be printed at a larger size.

25% more total megapixel count Edit
The Pentax K-3 has a total megapixel count of 24.71MPMP, however the Canon EOS 550D is only an 18.7MPMP digital camera (6.01MP less).
Significantly smaller minimum aperture Edit
The Pentax K-3 is a 3.5 minimum aperture digital camera. That's 18.5 smaller than the Canon EOS 550D (3.5).
2mm shorter minimum focal length Edit
The Pentax K-3 has a minimum focal length of 27mmmm, whereas the Canon EOS 550D is a 29mmmm minimum focal length digital camera (2mm longer).
Seven diaphragm blades Edit
The Pentax K-3 has seven diaphragm blades, however the Canon EOS 550D only has six diaphragm blades.
39 higher maximum ISO speed Edit
The Pentax K-3 has a maximum ISO speed of 51,200, whereas the Canon EOS 550D is only a 12,800 maximum ISO speed digital camera (39 lower).
30fps higher JPEG frame rate Edit
The Pentax K-3 has a JPEG frame rate of 60fpsfps, however the Canon EOS 550D is only a 30fpsfps JPEG frame rate digital camera (30fps lower).
One more memory slot Edit
The number of memory slots on the Pentax K-3 is two, but the Canon EOS 550D only has one memory slot.
Slightly larger screen size Edit
Pentax K-3 is 3.2"" screen, but the Canon EOS 550D is only a 3"" screen digital camera (0.2" smaller). Read more

The display diagonal is the size the size of the screen integrated in to the back of the camera. A larger display diagonal makes it easier to see if a shot has turned out as intended. Pocket cameras have smaller display diagonals as full size digital SLRs.

A larger display diagonal makes it easier to take photos and to see if a shot has turned out as intended.

Marginally higher lens magnification ratio Edit
The Pentax K-3 has a lens magnification ratio of 0.95xx, whereas the Canon EOS 550D is only a 0.87xx lens magnification ratio digital camera (0.08x lower). Read more

The lens magnification ratio is the ratio between the true size of the object being photographed and the size of the object when projected on to the camera's sensor.

A higher lens magnification ratio is important for macro photography as it allows you to focus on very small object very close to the lens.

Longer maximum battery life Edit
The Pentax K-3 has a maximum battery life of 6hh. That's 4.3h longer than the Canon EOS 550D (6hh). Read more

The maximum battery life is the maximum length of time that the camera could run for if not excessively using the playback features.

A longer battery life allows you use the camera for more days before you need to change the battery or recharge it.

Two hundred and eighty more shots per battery charge Edit
The Pentax K-3 takes 720 shots shots per battery charge, however the Canon EOS 550D only takes 440 shots shots per battery charge. Read more

The number of shots per battery charge is the number of photos that the camera will typically take on a single charge of the battery.

More shots per battery charge means you will have to recharge the battery less frequently and reduces the need to carry a second back up battery.

Reasons Against

14 Reasons Against
Lower megapixel count Edit
The Canon EOS 550D is an 18MPMP digital camera. That's 5.35MP lower than the Pentax K-3 (23.35MPMP). Read more

The resolution of the images a digital camera produces is measured in megapixels (MP). One megapixel is equal to 1 million pixels and is a result of the pixel width multiplied by the pixel height of the image. While a higher image resolution generally results in sharper images, only a relatively low megapixel count is required when printing the image at a small size or to display it on a computer screen.

A sensor with more megapixels will be able to capture more detailed photos and the image will appear sharper. Images with more megapixels can also be printed at a larger size.

Less total megapixel count Edit
The Canon EOS 550D is an 18.7MPMP digital camera. That's 6.01MP less than the Pentax K-3 (24.71MPMP).
Vastly larger minimum aperture Edit
The Canon EOS 550D has a minimum aperture of 22, however the Pentax K-3 is a 3.5 minimum aperture digital camera (18.5 smaller).
Longer minimum focal length Edit
The Canon EOS 550D is a 29mmmm minimum focal length digital camera. That's 2mm longer than the Pentax K-3 (27mmmm).
One less diaphragm blades Edit
The number of diaphragm blades on the Canon EOS 550D is six, but the Pentax K-3 only has seven diaphragm blades.
Lower maximum ISO speed Edit
The Canon EOS 550D is a 12,800 maximum ISO speed digital camera. That's 39 lower than the Pentax K-3 (51,200).
Lower JPEG frame rate Edit
The Canon EOS 550D is a 30fpsfps JPEG frame rate digital camera. That's 30fps lower than the Pentax K-3 (60fpsfps).
Only one memory slot Edit
The Canon EOS 550D is a one memory slot digital camera, whereas the Pentax K-3 only has two memory slots.
7% smaller screen size Edit
The Canon EOS 550D is a 3"" screen digital camera. That's 0.2" smaller than the Pentax K-3 (3.2""). Read more

The display diagonal is the size the size of the screen integrated in to the back of the camera. A larger display diagonal makes it easier to see if a shot has turned out as intended. Pocket cameras have smaller display diagonals as full size digital SLRs.

A larger display diagonal makes it easier to take photos and to see if a shot has turned out as intended.

10% lower lens magnification ratio Edit
The Canon EOS 550D is a 0.87xx lens magnification ratio digital camera. That's 0.08x lower than the Pentax K-3 (0.95xx). Read more

The lens magnification ratio is the ratio between the true size of the object being photographed and the size of the object when projected on to the camera's sensor.

A higher lens magnification ratio is important for macro photography as it allows you to focus on very small object very close to the lens.

4.3h shorter maximum battery life Edit
Canon EOS 550D is only 1.7hh battery life, but the Pentax K-3 is a 6hh battery life digital camera (4.3h longer). Read more

The maximum battery life is the maximum length of time that the camera could run for if not excessively using the playback features.

A longer battery life allows you use the camera for more days before you need to change the battery or recharge it.

Only 440 shots shots per battery charge Edit
The number of shots per battery charge on the Canon EOS 550D is 440 shots, but the Pentax K-3 only takes 720 shots shots per battery charge. Read more

The number of shots per battery charge is the number of photos that the camera will typically take on a single charge of the battery.

More shots per battery charge means you will have to recharge the battery less frequently and reduces the need to carry a second back up battery.

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Older by over two years
The Canon EOS 550D is two years older than the Pentax K-3.
8 Reasons Against
Hugely smaller optical zoom Edit
The Pentax K-3 has an optical zoom of 0.34xx, but the Canon EOS 550D is a 5.6xx optical zoom digital camera (5.26x bigger). Read more

The optical zoom of a camera is a measure of how much the camera can zoom in to the subject using the camera's lens system. An optical zoom is superior to a digital zoom because the zoom is achieved using the optics of lens which means that the full extent of the digital sensor is always used to capture the image.

A larger optical zoom allows you to zoom in on the subject without having to move closer. Compared to a digital zoom, using an optical zoom does not result in a loss of image quality.

Larger closest focusing distance Edit
The Pentax K-3 is a 0.4mm closest focusing distance digital camera. That's 0.15m larger than the Canon EOS 550D (0.4mm).
99% longer flash sync-speed Edit
The Pentax K-3 is a 1ss flash sync-speed digital camera. That's 0.99s longer than the Canon EOS 550D (1ss).
Vastly narrower field of view Edit
The Pentax K-3 has a field of view of 100%%, however the Canon EOS 550D is a 160%% field of view digital camera (60% wider).
26% heavier Edit
The Pentax K-3 is a 715gg digital camera. That's 185g heavier than the Canon EOS 550D (715gg). Read more

The camera's weight will depend on the type and size of camera. Compact cameras are usually the lightest while digital SLRs will be heavier. Also consider the number and weight of lenses to take when using a SLR.

The lower the camera weight, the easier it will be to carry around and it will also reduce your hand luggage weight when flying.

Thicker Edit
Pentax K-3 is 77.5mmmm deep, but the Canon EOS 550D is a 62mmmm deep digital camera (15.5mm thinner).
2.7mm wider Edit
Pentax K-3 is 131.5mmmm wide, but the Canon EOS 550D is a 128.8mmmm wide digital camera (2.7mm narrower).
Fewer awards
Whilst the Pentax K-3 has received 1 award, the Canon EOS 550D has received 22 awards.

Awards

22 Awards
01net.com: 5 Star
Akam.no: Recommended
Camera Labs: Highly Recommended
CNET.co.uk: Editor's Choice
CNET.com.au: Editor's Choice
Digital Versus: 5 Star
dinside.no/data: Recommended
dv.com: Excellence Award
EISA.eu: EISA Best Product
Ephotozine: Highly Recommended
Good Gear Guide.com.au: Best Buy
itespresso.es: Recommended
itpro.no: Warmly Recommended
PC Mag: Editor's Choice
pcactual.com: Recommended
PhotographyBlog.com: Highly Recommended
photoreview.com.au: Editor's Choice
Pocket Lint: Hot Product
tbreak.ae: Recommended
theregister.co.uk: Recommended
tipa.com: Technical Image Press Association Award
What Digital Camera: Recommended
1 Award
Imaging Resource.com: Dave's Pick

Average Expert Rating

Average User Rating

No reviews found

Date Released

62 months Ago 37 months Ago

Picture Quality

Camera Type
 SLR
 SLR
Megapixel Count
18MP 23.35MP
BEST
Sensor Type
 CMOS
 CMOS
Still Image Resolution
 5184 x 3456
 3456 x 2304
 2592 x 1728
 6016 x 4000
 4608 x 3072
 3072 x 2048
 1920 x 1280
 5184 x 3456
 3456 x 2304
 2592 x 1728
 6016 x 4000
 4608 x 3072
 3072 x 2048
 1920 x 1280
BEST
Maximum Image Resolution
 6016 x 4000
 6016 x 4000
BEST
Aspect Ratio
 3:2
BEST
 3:2
Image Format
 RAW
 EXIF
 JPG
 RAW
 EXIF
 JPG
Full-Frame Sensor Size
23.3 x 14.9 23.5 x 15.6
Total Megapixel Count
18.7MP 24.71MP
BEST
Image Stabilizer
 Body
 Body
Aspect Ratio
 3:2
 3:2

Design

Colour
 Black
 Black
Body Material
 Stainless steel
 Steel
 Magnesium
 Stainless steel
 Steel
 Magnesium

Lens System

Optical Zoom
5.6x
BEST
0.34x
Maximum Aperture
38 38
Minimum Aperture
22 3.5
BEST
Maximum Focal Length
216mm 82.5mm
BEST
Minimum Focal Length
29mm 27mm
BEST
Focal Length Range
75.4 x 101 18 - 135
Lens
 Standard
 Standard
Lens Structure
16/12 11/8
Lens Mount Interface
 Canon EF
 Canon EF-S
 Pentax K
 Pentax KA
 Pentax KAF
 Pentax KAF2
 Canon EF
 Canon EF-S
 Pentax K
 Pentax KA
 Pentax KAF
 Pentax KAF2
Diaphragm Blades
6 7
BEST
Filter Size
67mm 52mm
Lens Mount
 Bayonet
 Bayonet

Focusing

Auto Focus
 selective
 Selective Auto Focus
 single
 continuous
 spot
 Single Auto Focus
 Continuous Auto Focus
 Spot Auto Focus
 selective
 Selective Auto Focus
 single
 continuous
 spot
 Single Auto Focus
 Continuous Auto Focus
 Spot Auto Focus
Closest Focusing Distance
0.25m
BEST
0.4m
Macro Focusing Range
0.05 - ∞ Unknown - Click to provide data
Auto Focus Point
Unknown - Click to provide data 27
Focus Points Selection
 Auto
 Manual
 Auto
 Manual
Focus
 Auto
 Manual
 Auto/Manual
 Auto
 Manual
 Auto/Manual
Macro Focusing Range (tele)
1 - ∞ Unknown - Click to provide data
Focus Mode
 TTL
 TTL

Light Exposure

Light Exposure Mode
 Auto
 Manual
 shutter priority
 aperture priority
 Shutter priority AE
 Aperture priority AE
 Auto
 Manual
 shutter priority
 aperture priority
 Shutter priority AE
 Aperture priority AE
BEST
ISO Speed
 64
 80
 100
 400
 640
 800
 6400
 12800
 Auto
 200
 51200
 64
 80
 100
 400
 640
 800
 6400
 12800
 Auto
 200
 51200
Maximum ISO Speed
12,800 51,200
BEST
Minimum ISO Speed
100 100
Light Metering Mode
 Centre-weighted
 Spot
 Evaluative (Multi-pattern)
 Centre-weighted
 Spot
 Evaluative (Multi-pattern)
Light Exposure Correction
 ± 5EV (1/3EV step)
 ± 5EV (1/3EV step)
Light Exposure Control
 Program AE
 Program AE

Shutter

Maximum Camera Shutter Speed
30s 30s
Minimum Camera Shutter Speed
1s 1s
Shutter Speed Setting
 B
 B
Camera Shutter
 Electronic
 Electronic

Flash

Flash Mode
 Auto
 Manual
 Red-eye reduction
 Slow synchronization
 Flash on
 Flash off
 Auto
 Manual
 Red-eye reduction
 Slow synchronization
 Flash on
 Flash off
Flash Guide
13m 13m
Flash Sync-Speed
0.01s
BEST
1s
Flash Recharging Time
3s Unknown - Click to provide data
Flash Exposure Correction
 ±3EV (1/2, 1/3, 1 EV step)
BEST
 ±3EV (1/2, 1/3, 1 EV step)
Shoe Mounting Point
 Hot
 Hot

Video

Maximum Video Resolution
 1920 x 1080
 1920 x 1080
JPEG Frame Rate
30fps 60fps
BEST
Video Format
 H.264
 MOV
 H.264
 MOV
Analog Signal Format
 PAL
 NTSC
 PAL
 NTSC
Video Resolution
 1920 x 1080
 1280 x 720
 640 x 480
 1920 x 1080
 1280 x 720
 640 x 480
Resolution and Capture Speed
 1920x1080@60fps
 1920x1080@30fps
 1280×720@60fps
 1920x1080@25fps
 1920x1080@60fps
 1920x1080@30fps
 1280×720@60fps
 1920x1080@25fps
BEST
HD Type
 Full HD
 Full HD

Audio

Audio Format
 PCM
BEST
 PCM

Memory

Memory Card
 SDXC
 SDHC
 SD
 Eye-Fi
 SDXC
 SDHC
 SD
 Eye-Fi
Memory Slot
1 2
BEST

Display

Screen Size
3" 3.2"
BEST
Display
 LCD
 LCD
Field of View
160%
BEST
100%
Display Resolution
1,040,000 pixels
BEST
1,037,000 pixels

Viewfinder

Lens Magnification Ratio
0.87x 0.95x
BEST
Viewfinder
 electrical
 Optical
BEST
 electrical
 Optical

Ports & Interfaces

USB Connector Type
 Micro-USB B
 Micro-USB B
I/O Port
1x video out PAL/ NTSC,1x HDMI mini,1x 3.5mm Unknown - Click to provide data
HDMI Connector
 Micro
 Micro
USB Version
 3.0
 3.0
BEST
USB Connector
 Micro-USB B
 Micro-USB
 Micro-USB B
 Micro-USB

Camera

White Balance Mode
 Auto
 Tungsten
 Fluorescent
 Cloudy
 Daylight
 Shade
 Flash
 Custom modes
 Auto
 Tungsten
 Fluorescent
 Cloudy
 Daylight
 Shade
 Flash
 Custom modes
Shooting Mode
 Auto
 Program
 Scene
 Shutter priority
 Aperture priority
 Movie
 Manual
 Sensitivity priority
 Auto
 Program
 Scene
 Shutter priority
 Aperture priority
 Movie
 Manual
 Sensitivity priority
Photo Effect
 Neutral
 Pastel
 Neutral
 Pastel
Self-Timer
2,10 2,12
Maximum Playback Zoom
10x Unknown - Click to provide data
Image Editing Mode
 Rotating
 Resizing
 Crop
 Rotating
 Resizing
 Crop
Camera File System
 DPOF 1.1
 Exif 2.1
 DPOF
 Exif
 DCF 2.0
 Exif 2.3
 RAW
 DCF
 DPOF 1.1
 Exif 2.1
 DPOF
 Exif
 DCF 2.0
 Exif 2.3
 RAW
 DCF
Playback Mode
 Movie
 Single image
 Slide show
 Movie
 Single image
 Slide show
Start-Up Time
0.1ms Unknown - Click to provide data
Built-In Processor
DIGIC 4 Unknown - Click to provide data
Diopter Adjustment
Unknown - Click to provide data -2.5 - 1.5
Eye Relief
Unknown - Click to provide data 20.5mm
Scene Mode
 Close-up (macro)
 Landscape
 Night
 Night portrait
 Portrait
 Sports
 Close-up (macro)
 Landscape
 Night
 Night portrait
 Portrait
 Sports
Display Language
 DAN
 DUT
 ARA
 GRE
 EST
 BUL
 CZE
 UKR
 THA
 NOR
 RUS
 ENG
 FIN
 FRE
 DEU
 ITA
 JPN
 POL
 POR
 ESP
 SWE
 TUR
 HUN
 KOR
 CHI (TR)
 CHI (SIMPL)
 KAZ
 DAN
 DUT
 ARA
 GRE
 EST
 BUL
 CZE
 UKR
 THA
 NOR
 RUS
 ENG
 FIN
 FRE
 DEU
 ITA
 JPN
 POL
 POR
 ESP
 SWE
 TUR
 HUN
 KOR
 CHI (TR)
 CHI (SIMPL)
 KAZ
On Screen Display Language
 DAN
 DUT
 ARA
 GRE
 CZE
 UKR
 THA
 NOR
 RUS
 ENG
 FIN
 FRE
 DEU
 ITA
 JPN
 POL
 POR
 ESP
 SWE
 TUR
 KOR
 RUM
 CHI (TR)
 CHI (SIMPL)
 DAN
 DUT
 ARA
 GRE
 CZE
 UKR
 THA
 NOR
 RUS
 ENG
 FIN
 FRE
 DEU
 ITA
 JPN
 POL
 POR
 ESP
 SWE
 TUR
 KOR
 RUM
 CHI (TR)
 CHI (SIMPL)

Weight & Dimensions

Weight
530g
BEST
715g
Height
97.3mm 100mm
BEST
Depth
62mm
BEST
77.5mm
Width
128.8mm
BEST
131.5mm
Weight Including Battery
530g
BEST
800g

Battery

Power Source
 Battery
 Battery
Battery
 Lithium-Ion (Li-Ion)
 Lithium-Ion (Li-Ion)
Supported Battery
1 1
Battery Size
LP-E8 D-LI90
Maximum Battery Life
1.7h 6h
BEST
Shot Per Battery Charge
440 shots 720 shots
BEST

Operational Conditions

Operating Temperature Range
32 - 104 Unknown - Click to provide data
Relative Humidity Operating Range
0 - 40 5 - 92
Operating Temperature Range
0 - 40 -10 - 40

Packaging Content

Bundled Software
ZoomBrowser EX / ImageBrowser,Image Processing,Digital Photo Professional,PhotoStitch,EOS Utility,Picture Style Editor S-SW140
Included Cable
 USB
 AV
BEST
 USB
 AV

Other Features

Metering
TTL Unknown - Click to provide data
Weight
0.53kg Unknown - Click to provide data
Interface
USB 2.0 Unknown - Click to provide data
Operating System
Windows XP (SP2/SP3), Vista inc SP1 Starter Edition, 7 Starter Edition, OS X v10.4-10.6 Unknown - Click to provide data
Focal Length
29 - 88 Unknown - Click to provide data
Aperture Range
3.5 - 5.6 Unknown - Click to provide data
Effective Sensor Resolution
18,000,000 pixels Unknown - Click to provide data
Camera Shutter Speed Range
30 - 1/4000 Unknown - Click to provide data
Minimum System Requirement
USB Unknown - Click to provide data
Lens System
EF/EF-S Unknown - Click to provide data

Technical Details

Flash Type
Unknown - Click to provide data P-TTL
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