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Canon 5D MIII vs Sony FX3

Portability
55
Imaging
67
Features
74
Overall
69
Canon EOS 5D Mark III front
 
Sony FX3 front
Portability
62
Imaging
64
Features
92
Overall
75

Canon 5D MIII vs Sony FX3 Key Specs

Canon 5D MIII
(Full Review)
  • 22MP - Full frame Sensor
  • 3.2" Fixed Display
  • ISO 100 - 25600 (Boost to 102400)
  • 1/8000s Maximum Shutter
  • 1920 x 1080 video
  • Canon EF Mount
  • 950g - 152 x 116 x 76mm
  • Released May 2012
  • Earlier Model is Canon 5D MII
  • Renewed by Canon 5D MIV
Sony FX3
(Full Review)
  • 12MP - Full frame Sensor
  • 3.00" Fully Articulated Screen
  • ISO 80 - 102400 (Raise to 409600)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Maximum Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 716g - 130 x 78 x 85mm
  • Announced February 2021
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Canon 5D MIII vs Sony FX3 Overview

Lets look a bit more in depth at the Canon 5D MIII versus Sony FX3, former is a Advanced DSLR while the latter is a Pro Mirrorless by manufacturers Canon and Sony. There is a large difference among the image resolutions of the 5D MIII (22MP) and FX3 (12MP) but both cameras posses the same sensor sizes (Full frame).

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The 5D MIII was introduced 9 years prior to the FX3 which is a fairly serious difference as far as camera tech is concerned. Both cameras have different body design with the Canon 5D MIII being a Mid-size SLR camera and the Sony FX3 being a Rangefinder-style mirrorless camera.

Before going right into a complete comparison, here is a simple summation of how the 5D MIII grades vs the FX3 when considering portability, imaging, features and an overall mark.

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Reasons to pick Canon 5D MIII over the Sony FX3

 5D MIII FX3 
Screen dimensions3.2"3.00"Bigger screen (+0.2")

Reasons to pick Sony FX3 over the Canon 5D MIII

 FX3 5D MIII 
AnnouncedFebruary 2021May 2012Newer by 106 months
Screen typeFully articulatedFixed Fully Articulating screen
Screen resolution1440k1040kClearer screen (+400k dot)
Selfie screen Take selfies
Touch friendly screen Quickly navigate

Common features in the Canon 5D MIII and Sony FX3

 5D MIII FX3 
Manual focus More exact focus

Canon 5D MIII vs Sony FX3 Physical Comparison

If you're looking to travel with your camera frequently, you'll need to take into account its weight and size. The Canon 5D MIII has external dimensions of 152mm x 116mm x 76mm (6.0" x 4.6" x 3.0") along with a weight of 950 grams (2.09 lbs) while the Sony FX3 has specifications of 130mm x 78mm x 85mm (5.1" x 3.1" x 3.3") having a weight of 716 grams (1.58 lbs).

Check the Canon 5D MIII versus Sony FX3 in our completely new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an ILC will vary depending on the lens you are employing at the time. Underneath is a front view overall size comparison of the 5D MIII vs the FX3.

Canon 5D MIII vs Sony FX3 size comparison

Taking into account size and weight, the portability grade of the 5D MIII and FX3 is 55 and 62 respectively.

Canon 5D MIII vs Sony FX3 top view buttons comparison

Canon 5D MIII vs Sony FX3 Sensor Comparison

Generally, its difficult to picture the difference in sensor dimensions merely by researching a spec sheet. The image underneath will offer you a far better sense of the sensor dimensions in the 5D MIII and FX3.

As you can see, the two cameras provide the same sensor dimensions albeit different resolution. You can expect the Canon 5D MIII to result in extra detail using its extra 10MP. Higher resolution will also allow you to crop shots more aggressively. The more aged 5D MIII will be behind with regard to sensor tech.

Canon 5D MIII vs Sony FX3 sensor size comparison

Canon 5D MIII vs Sony FX3 Screen and ViewFinder

Canon 5D MIII vs Sony FX3 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Canon 5D MIII Portrait photography highlights
Sony FX3 Portrait photography highlights
80
you can focus manually
MP count good (22MP)
sensor size is big (Full frame)
includes face detection autofocus
exports RAW formats
70
manual focus
big sensor size (Full frame)
comes with face detection focusing
delivers RAW formats
megapixel count low (12 megapixels)
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Street Comparison

Canon 5D MIII Street photography info
Sony FX3 Street photography info
58
sensor size is big (Full frame)
exports RAW formats
weather proofing
very good high ISO (25,600)
screen is fixed
does not have image stabilization
heavier than average in class (950g)
76
built in image stabilization (Sensor based 5-axis)
big sensor size (Full frame)
delivers RAW formats
provides touch focus
weather proof
good high ISO (102,400)
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Sports Comparison

Canon 5D MIII Sports photography highlights
Sony FX3 Sports photography highlights
71
great max shutter speed (1/8,000 seconds)
MP count good (22 megapixels)
sensor size is big (Full frame)
includes tracking autofocus
weather proofing
has phase detect autofocus
slow continuous shooting (6.0 frames per second)
does not have image stabilization
75
max shutter speed is good (1/8,000s)
built in image stabilization (Sensor based 5-axis)
big sensor size (Full frame)
comes with tracking autofocus
weather proof
great battery life (600 per charge)
comes with phase detect AF
megapixel count low (12 megapixels)
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Travel Comparison

Canon 5D MIII Travel photography highlights
Sony FX3 Travel photography highlights
51
weather proofing
MP count good (22 megapixels)
lack of Time Lapse function
heavier than average in class (950 grams)
display is not selfie friendly
70
great battery life (600 CIPA)
weather proof
connects via bluetooth
provides touch focus
selfie friendly screen
megapixel count low (12 megapixels)
Photography Glossary

Landscape Comparison

Canon 5D MIII Landscape photography details
Sony FX3 Landscape photography details
73
you can focus manually
interchangeable lenses (Canon EF mount)
good sized screen (3.2 inch)
MP count good (22 megapixels)
sensor size is big (Full frame)
very good high ISO (25,600)
exports RAW formats
weather proofing
has double storage slots
does not have image stabilization
lack of Time Lapse function
77
manual focus
interchangeable lenses (Sony E mount)
screen size is good (3.00 inch)
built in image stabilization (Sensor based 5-axis)
big sensor size (Full frame)
good high ISO (102,400)
delivers RAW formats
weather proof
great battery life (600 per charge)
has dual storage slots
megapixel count low (12 megapixels)
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Vlogging Comparison

Canon 5D MIII Vlogging advice
Sony FX3 Vlogging advice
27
includes face detection autofocus
great video quality (1920 x 1080 resolution)
has external mic port
display is not selfie friendly
does not have image stabilization
heavier than average in class (950g)
77
selfie friendly screen
touchscreen enabled
built in image stabilization (Sensor based 5-axis)
comes with face detection focusing
video res high (3840 x 2160 resolution)
does have external mic jack
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Canon 5D MIII vs Sony FX3 Specifications

Detailed spec comparison table for Canon 5D MIII and Sony FX3
 Canon EOS 5D Mark IIISony FX3
General Information
Company Canon Sony
Model type Canon EOS 5D Mark III Sony FX3
Class Advanced DSLR Pro Mirrorless
Released 2012-05-22 2021-02-23
Body design Mid-size SLR Rangefinder-style mirrorless
Sensor Information
Powered by Digic 5+ -
Sensor type CMOS BSI-CMOS
Sensor size Full frame Full frame
Sensor dimensions 36 x 24mm 35.6 x 23.8mm
Sensor surface area 864.0mm² 847.3mm²
Sensor resolution 22 megapixels 12 megapixels
Anti alias filter
Aspect ratio 3:2 3:2 and 16:9
Max resolution 5760 x 3840 4240 x 2832
Max native ISO 25600 102400
Max enhanced ISO 102400 409600
Min native ISO 100 80
RAW support
Min enhanced ISO 50 50
Autofocusing
Focus manually
AF touch
Continuous AF
AF single
Tracking AF
AF selectice
AF center weighted
AF multi area
Live view AF
Face detect focusing
Contract detect focusing
Phase detect focusing
Total focus points 61 759
Cross type focus points 41 -
Lens
Lens mount type Canon EF Sony E
Number of lenses 250 187
Crop factor 1 1
Screen
Display type Fixed Type Fully articulated
Display sizing 3.2 inches 3.00 inches
Resolution of display 1,040 thousand dot 1,440 thousand dot
Selfie friendly
Liveview
Touch capability
Display technology Clear View II TFT LCD -
Viewfinder Information
Viewfinder type Optical (pentaprism) None
Viewfinder coverage 100% -
Viewfinder magnification 0.71x -
Features
Minimum shutter speed 30 seconds 30 seconds
Fastest shutter speed 1/8000 seconds 1/8000 seconds
Continuous shutter speed 6.0 frames/s 10.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Custom WB
Image stabilization
Integrated flash
Flash distance no built-in flash no built-in flash
Flash modes no built-in flash no built-in flash
Hot shoe
AE bracketing
White balance bracketing
Fastest flash sync 1/200 seconds -
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Video resolutions 1920 x 1080 (29.97, 25, 23.976 fps fps), 1280 x 720 (59.94, 50 fps), 640 x 480 (25, 30 fps) 3840 x 2160 @ 120p / 280 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 100p / 280 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 60p / 200 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 50p / 200 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 30p / 140 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 25p / 140 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 24p / 100 Mbps, XAVC S, MP4, H.265, Linear PCM 1920 x 1080 @ 120p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 100p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 60p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 50p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 25p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 24p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM
Max video resolution 1920x1080 3840x2160
Video format H.264 MPEG-4, XAVC S, XAVC HS, XAVC S-1, H.264, H.265
Mic input
Headphone input
Connectivity
Wireless Optional Built-In
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 3.2 Gen 1 (5 GBit/sec)
GPS Optional None
Physical
Environment seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 950g (2.09 pounds) 716g (1.58 pounds)
Physical dimensions 152 x 116 x 76mm (6.0" x 4.6" x 3.0") 130 x 78 x 85mm (5.1" x 3.1" x 3.3")
DXO scores
DXO Overall rating 81 85
DXO Color Depth rating 24.0 24.2
DXO Dynamic range rating 11.7 13.4
DXO Low light rating 2293 3900
Other
Battery life 950 shots 600 shots
Battery format Battery Pack Battery Pack
Battery ID LP-E6 NP-FZ100
Self timer Yes (2 or 10 sec) Yes (2 or 10 sec; continuous (3 or 5 exposures))
Time lapse recording With downloadable app
Type of storage Compact Flash Type I (UDMA compatible), SD/SDHC/SDXC Dual SD/CFexpress Type A slots
Storage slots Two Two
Pricing at release $2,780 $3,900