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Sony A7 IV vs Sony FX3

Portability
61 Imaging
80 Features
92 Overall
84
Sony Alpha A7 IV front
 
Sony FX3 front
Portability
62 Imaging
65 Features
92 Overall
75

Sony A7 IV vs Sony FX3 Key Specs

Sony A7 IV
(Full Review)
  • 33MP - Full frame Sensor
  • 3" Fully Articulated Screen
  • ISO 100 - 51200 (Boost to 204800)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 699g - 129 x 97 x 81mm
  • Released October 2021
  • Earlier Model is Sony A7 III
Sony FX3
(Full Review)
  • 12MP - Full frame Sensor
  • 3.00" Fully Articulated Screen
  • ISO 80 - 102400 (Expand to 409600)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 716g - 130 x 78 x 85mm
  • Released February 2021
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Sony A7 IV vs Sony FX3 Overview

Its time to take a deeper look at the Sony A7 IV and Sony FX3, both Pro Mirrorless cameras and they are both built by Sony. There is a significant difference among the image resolutions of the A7 IV (33MP) and FX3 (12MP) but they enjoy the exact same sensor dimensions (Full frame).

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The A7 IV was announced 8 months later than the FX3 and they are both of a similar generation. Both of these cameras come with different body type with the Sony A7 IV being a SLR-style mirrorless camera and the Sony FX3 being a Rangefinder-style mirrorless camera.

Before diving straight into a complete comparison, below is a simple overview of how the A7 IV grades vs the FX3 in regards to portability, imaging, features and an overall grade.

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Reasons to pick Sony A7 IV over the Sony FX3

		

		

			
 A7 IV FX3 
ReleasedOctober 2021February 2021More recent by 8 months
		

	

	
	

		

		
Reasons to pick Sony FX3 over the Sony A7 IV

		

		

			
 FX3 A7 IV 
		

	

	
	

		

		
Common features in the Sony A7 IV and Sony FX3

		

		

			
 A7 IV FX3 
Manually focus  More precise focus
Screen typeFully articulatedFully articulatedFully Articulated screen
Screen dimension3"3.00"Identical screen sizing
Screen resolution1440k1440kThe same screen resolution
Selfie screen  Both are selfie friendly
Touch screen  Quickly navigate
		

	

	

	
	
	
	

	

		

		
Sony A7 IV vs Sony FX3 Physical Comparison

		

		

			
For those who are going to lug around your camera regularly, you need to factor its weight and proportions. The Sony A7 IV offers exterior measurements of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") and a weight of 699 grams (1.54 lbs) whilst the Sony FX3 has measurements of 130mm x 78mm x 85mm (5.1" x 3.1" x 3.3") and a weight of 716 grams (1.58 lbs).
Take a look at the Sony A7 IV and Sony FX3 in the latest Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses
Always remember, the weight of an Interchangeable Lens Camera will vary depending on the lens you have chosen during that time. Here is the front view measurements comparison of the A7 IV vs the FX3.
Sony A7 IV vs Sony FX3 size comparison
Considering size and weight, the portability rating of the A7 IV and FX3 is 61 and 62 respectively.
Sony A7 IV vs Sony FX3 top view buttons comparison		

	

	
	

		

		
Sony A7 IV vs Sony FX3 Sensor Comparison

		

		

			
Usually, its difficult to imagine the difference in sensor measurements just by looking through technical specs. The photograph here will give you a much better sense of the sensor measurements in the A7 IV and FX3.
As you can tell, each of these cameras have got the exact same sensor measurements albeit different megapixels. You should count on the Sony A7 IV to provide you with more detail with its extra 21 Megapixels. Higher resolution will also enable you to crop photographs much more aggressively. The fresher A7 IV provides an advantage with regard to sensor technology.
	
			Sony A7 IV vs Sony FX3 sensor size comparison			
		

	

	
	

		

		
Sony A7 IV vs Sony FX3 Screen and ViewFinder

		

		

					

		Sony A7 IV vs Sony FX3 Screen and Viewfinder comparison	

	
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Photography Type Scores

		

	

	
Portrait Comparison
Sony A7 IV Portrait photography information
Sony FX3 Portrait photography information
81
 manual focus
 great sensor resolution (33 megapixels)
 sensor size is great (Full frame)
 comes with face detect focusing
 supports RAW formats
 does not have liveview
71
 focusing manually
 sensor size is large (Full frame)
 provides face detect focusing
 exports RAW formats
 sensor resolution low (12MP)
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Street Comparison
Street photography with Sony A7 IV
Street photography with Sony FX3
79
 built in image stabilization (Sensor based 5-axis)
 sensor size is great (Full frame)
 supports RAW formats
 comes with touch to focus
 weather proof
 above average ISO range (51,200)
76
 has image stabilization (Sensor based 5-axis)
 sensor size is large (Full frame)
 exports RAW formats
 boasts focus by touch
 weather proof
 good ISO range (102,400)
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Sports Comparison
Sony A7 IV Sports photography info
Sony FX3 Sports photography info
84
 great max shutter speed (1/8,000s)
 built in image stabilization (Sensor based 5-axis)
 great sensor resolution (33 megapixels)
 sensor size is great (Full frame)
 comes with tracking focus
 weather proof
 better than average battery pack (600 per charge)
 comes with phase detect AF
 does not have liveview
76
 high shutter speed (1/8,000 seconds)
 has image stabilization (Sensor based 5-axis)
 sensor size is large (Full frame)
 provides tracking focus
 weather proof
 good battery power (600 shots)
 sensor has phase detect AF
 sensor resolution low (12MP)
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Travel Comparison
 Sony A7 IV as a Travel photography camera
 Sony FX3 as a Travel photography camera
80
 better than average battery pack (600 CIPA)
 weather proof
 connects via bluetooth
 comes with touch to focus
 great sensor resolution (33MP)
 display is selfie friendly
71
 good battery power (600 CIPA)
 weather proof
 supports bluetooth
 boasts focus by touch
 selfie friendly screen
 sensor resolution low (12 megapixels)
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Landscape Comparison
Sony A7 IV Landscape photography advice
Sony FX3 Landscape photography advice
83
 manual focus
 swap lenses (Sony E mount)
 screen size is good (3 inch)
 built in image stabilization (Sensor based 5-axis)
 great sensor resolution (33 megapixels)
 sensor size is great (Full frame)
 above average ISO range (51,200)
 supports RAW formats
 weather proof
 better than average battery pack (600 shots)
 two card slots
 does not have liveview
77
 focusing manually
 change lenses (Sony E mount)
 decent sized screen (3.00 inches)
 has image stabilization (Sensor based 5-axis)
 sensor size is large (Full frame)
 good ISO range (102,400)
 exports RAW formats
 weather proof
 good battery power (600 per charge)
 has dual storage slots
 sensor resolution low (12MP)
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Vlogging Comparison
Vlogging with Sony A7 IV
Vlogging with Sony FX3
80
 display is selfie friendly
 touchscreen functionality
 built in image stabilization (Sensor based 5-axis)
 comes with face detect focusing
 high res video (3840 x 2160 pixels)
 does have microphone socket
77
 selfie friendly screen
 has touchscreen
 has image stabilization (Sensor based 5-axis)
 provides face detect focusing
 video resolution high (3840 x 2160 pixels)
 includes mic jack
Photography Glossary
	

		

			
Sony A7 IV vs Sony FX3 Specifications

		

		

					

		
		

			Detailed spec comparison table for Sony A7 IV and Sony FX3
 Sony Alpha A7 IVSony FX3
General Information
Brand Sony Sony
Model type Sony Alpha A7 IV Sony FX3
Category Pro Mirrorless Pro Mirrorless
Released 2021-10-21 2021-02-23
Body design SLR-style mirrorless Rangefinder-style mirrorless
Sensor Information
Sensor type BSI-CMOS BSI-CMOS
Sensor size Full frame Full frame
Sensor dimensions 35.8 x 23.8mm 35.6 x 23.8mm
Sensor area 852.0mm² 847.3mm²
Sensor resolution 33 megapixel 12 megapixel
Anti alias filter    
Aspect ratio 1:1, 4:3, 3:2 and  16:9 3:2 and  16:9
Maximum resolution 7008 x 4672 4240 x 2832
Maximum native ISO 51200 102400
Maximum boosted ISO 204800 409600
Min native ISO 100 80
RAW support    
Min boosted ISO 50 50
Autofocusing
Focus manually    
Touch focus    
Autofocus continuous    
Single autofocus    
Tracking autofocus    
Selective autofocus    
Autofocus center weighted    
Multi area autofocus    
Autofocus live view    
Face detection autofocus    
Contract detection autofocus    
Phase detection autofocus    
Total focus points 759 759
Lens
Lens mount type Sony E Sony E
Available lenses 172 187
Crop factor 1 1
Screen
Screen type Fully articulated Fully articulated
Screen diagonal 3" 3.00"
Resolution of screen 1,440 thousand dot 1,440 thousand dot
Selfie friendly    
Liveview    
Touch display    
Viewfinder Information
Viewfinder Electronic None
Viewfinder resolution 3,690 thousand dot -
Viewfinder coverage 100% -
Viewfinder magnification 0.78x -
Features
Lowest shutter speed 30s 30s
Highest shutter speed 1/8000s 1/8000s
Continuous shooting speed 10.0 frames per sec 10.0 frames per sec
Shutter priority    
Aperture priority    
Expose Manually    
Exposure compensation Yes Yes
Set white balance    
Image stabilization    
Integrated flash    
Flash distance no built-in flash no built-in flash
Flash modes no built-in flash no built-in flash
External flash    
AEB    
WB bracketing    
Highest flash sync 1/200s -
Exposure
Multisegment exposure    
Average exposure    
Spot exposure    
Partial exposure    
AF area exposure    
Center weighted exposure    
Video features
Video resolutions 3843840 x 2160 @ 60p / 200 Mbps, XAVC HS, MP4, H.265, Linear PCM3840 x 2160 @ 50p / 200 Mbps, XAVC HS, MP4, H.265, Linear PCM3840 x 2160 @ 30p / 140 Mbps, XAVC HS, MP4, H.265, Linear PCM3840 x 2160 @ 25p / 140 Mbps, XAVC HS, MP4, H.265, Linear PCM3840 x 2160 @ 24p / 100 Mbps, XAVC HS, MP4, H.265, Linear PCM3840 x 2160 @ 60p / 600 Mbps, XAVC S-I, MP4, H.264, Linear PCM3840 x 2160 @ 50p / 500 Mbps, XAVC S-I, MP4, H.264, Linear PCM3840 x 2160 @ 30p / 300 Mbps, XAVC S-I, MP4, H.264, Linear PCM3840 x 2160 @ 25p / 250 Mbps, XAVC S-I, MP4, H.264, Linear PCM3840 x 2160 @ 24p / 240 Mbps, XAVC S-I, MP4, H.264, Linear PCM3840 x 2160 @ 120p / 280 Mbps, XAVC S, MP4, H.264, Linear PCM3840 x 2160 @ 100p / 280 Mbps, XAVC S, MP4, H.264, Linear PCM3840 x 2160 @ 60p / 200 Mbps, XAVC S, MP4, H.264, Linear PCM3840 x 2160 @ 50p / 200 Mbps, XAVC S, MP4, H.264, Linear PCM3840 x 2160 @ 30p / 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
Maximum video resolution 3840x2160 3840x2160
Video data format MPEG-4, XAVC S, XAVC HS, XAVC S-I, H.264, H.265 MPEG-4, XAVC S, XAVC HS, XAVC S-1, H.264, H.265
Mic input    
Headphone input    
Connectivity
Wireless Built-In Built-In
Bluetooth    
NFC    
HDMI    
USB Yes (USB PD supported) USB 3.2 Gen 1 (5 GBit/sec)
GPS None None
Physical
Environment seal    
Water proofing    
Dust proofing    
Shock proofing    
Crush proofing    
Freeze proofing    
Weight 699 grams (1.54 lbs) 716 grams (1.58 lbs)
Dimensions 129 x 97 x 81mm (5.1" x 3.8" x 3.2") 130 x 78 x 85mm (5.1" x 3.1" x 3.3")
DXO scores
DXO All around rating not tested 85
DXO Color Depth rating not tested 24.2
DXO Dynamic range rating not tested 13.4
DXO Low light rating not tested 3900
Other
Battery life 600 pictures 600 pictures
Battery format Battery Pack Battery Pack
Battery ID NP-FZ100 NP-FZ100
Self timer Yes (2 or 10 sec; continuous (3 or 5 exposures)) Yes (2 or 10 sec; continuous (3 or 5 exposures))
Time lapse feature   With downloadable app
Type of storage Dual SD/CFexpress Type A slots Dual SD/CFexpress Type A slots
Storage slots 2 2
Launch price $2,500 $3,900