Sony A7R III vs Sony A33

Portability
63
Imaging
81
Features
93
Overall
85
Sony Alpha A7R III front
 
Sony SLT-A33 front
Portability
67
Imaging
56
Features
80
Overall
65
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Sony A7R III vs Sony A33 Overview

Following is a in-depth analysis of the Sony A7R III vs Sony A33, former is a Pro Mirrorless while the latter is a Entry-Level DSLR and they are both created by Sony. There is a substantial difference between the image resolutions of the A7R III (42MP) and A33 (14MP) and the A7R III (Full frame) and A33 (APS-C) boast totally different sensor dimensions.

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The A7R III was released 7 years after the A33 which is quite a big difference as far as tech is concerned. Both of these cameras feature different body design with the Sony A7R III being a SLR-style mirrorless camera and the Sony A33 being a Compact SLR camera.

Before going right into a comprehensive comparison, here is a brief view of how the A7R III matches up vs the A33 when considering portability, imaging, features and an overall score.

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Sony A7R III vs Sony A33 Key Specs

Sony A7R III
(Full Review)
  • 42MP - Full frame Sensor
  • 3" Tilting Screen
  • ISO 100 - 32000 (Raise to 102400)
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 657g - 127 x 96 x 74mm
  • Released October 2017
  • Old Model is Sony A7R II
  • Newer Model is Sony A7R IV
Sony A33
(Full Review)
  • 14MP - APS-C Sensor
  • 3" Fully Articulated Display
  • ISO 100 - 12800 (Boost to 25600)
  • Sensor based Image Stabilization
  • 1920 x 1080 video
  • Sony/Minolta Alpha Mount
  • 500g - 124 x 92 x 85mm
  • Announced August 2010
  • Successor is Sony A35
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Sony A7R III vs Sony A33 Physical Comparison

When you are aiming to carry your camera regularly, you're going to have to take into account its weight and volume. The Sony A7R III provides external measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") accompanied by a weight of 657 grams (1.45 lbs) while the Sony A33 has sizing of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") having a weight of 500 grams (1.10 lbs).

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Do not forget, the weight of an ILC will vary depending on the lens you have chosen during that time. Following is the front view size comparison of the A7R III compared to the A33.

Sony A7R III vs Sony A33 size comparison

Taking into account dimensions and weight, the portability score of the A7R III and A33 is 63 and 67 respectively.

Sony A7R III vs Sony A33 top view buttons comparison

Sony A7R III vs Sony A33 Sensor Comparison

Normally, it is very difficult to imagine the gap in sensor sizing simply by looking through technical specs. The graphic underneath will offer you a greater sense of the sensor sizing in the A7R III and A33.

As you can tell, the 2 cameras enjoy different megapixels and different sensor sizing. The A7R III due to its larger sensor is going to make getting shallower depth of field simpler and the Sony A7R III will result in extra detail having its extra 28MP. Greater resolution will help you crop pics far more aggressively. The newer A7R III provides a benefit with regard to sensor innovation.

Sony A7R III vs Sony A33 sensor size comparison

Sony A7R III vs Sony A33 Screen and ViewFinder

Sony A7R III vs Sony A33 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Sony A7R III Portrait photography details
Sony A33 Portrait photography details
88
you can focus manually
megapixel count amazing (42 megapixels)
sensor size is big (Full frame)
provides face detect autofocus
delivers RAW files
73
you can focus manually
decent sensor resolution (14 megapixels)
good sensor size (APS-C)
provides face detection focusing
delivers RAW files
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Street Comparison

Sony A7R III Street photography info
Sony A33 Street photography info
80
has a tilting screen
built in image stabilization (Sensor based 5-axis)
sensor size is big (Full frame)
delivers RAW files
boasts touch focus
weather proof
great high ISO (32,000)
77
fully articulated screen
built in image stabilization (Sensor based)
good sensor size (APS-C)
delivers RAW files
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Sports Comparison

Sony A7R III Sports photography info
Sony A33 Sports photography info
90
high shutter speed (1/8,000s)
built in image stabilization (Sensor based 5-axis)
megapixel count amazing (42 megapixels)
sensor size is big (Full frame)
provides tracking focus
weather proof
great battery life (650 per charge)
sensor has phase detect autofocus
68
built in image stabilization (Sensor based)
decent sensor resolution (14MP)
good sensor size (APS-C)
has phase detect AF
bad battery life (340 per charge)
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Travel Comparison

Sony A7R III Travel photography details
Sony A33 Travel photography details
74
great battery life (650 shots)
weather proof
supports bluetooth
boasts touch focus
megapixel count amazing (42MP)
does not posses selfie friendly screen
62
decent sensor resolution (14 megapixels)
has built in flash
selfie friendly screen
doesn't have Timelapse function
bad battery life (340 CIPA)
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Landscape Comparison

Sony A7R III Landscape photography advice
Sony A33 Landscape photography advice
88
you can focus manually
swap lenses (Sony E mount)
nice screen size (3")
built in image stabilization (Sensor based 5-axis)
megapixel count amazing (42 megapixels)
sensor size is big (Full frame)
doesnt have low pass filter
great high ISO (32,000)
delivers RAW files
weather proof
great battery life (650 CIPA)
2 card slots
67
you can focus manually
swap lenses (Sony/Minolta Alpha mount)
decent sized screen (3")
built in image stabilization (Sensor based)
decent sensor resolution (14MP)
good sensor size (APS-C)
delivers RAW files
bad battery life (340 CIPA)
doesn't have Timelapse function
400 Megapixel mode coming to Fujifilm GFX 100

Vlogging Comparison

Vlogging with Sony A7R III
Vlogging with Sony A33
37
built-in touchscreen
built in image stabilization (Sensor based 5-axis)
provides face detect autofocus
high video quality (3840 x 2160 pxls)
includes mic support
does not posses selfie friendly screen
78
selfie friendly screen
built in image stabilization (Sensor based)
provides face detection focusing
video resolution high (1920 x 1080 pxls)
has external microphone jack
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Sony A7R III vs Sony A33 Specifications

General Information
Brand
Sony
Sony
Model
Sony Alpha A7R III
Sony SLT-A33
Type
Pro Mirrorless
Entry-Level DSLR
Released
2017-10-25
2010-08-24
Body design
SLR-style mirrorless
Compact SLR
Sensor Information
Powered by
Bionz X
Bionz
Sensor type
BSI-CMOS
CMOS
Sensor size
Full frame
APS-C
Sensor measurements
35.9 x 24mm
23.5 x 15.6mm
Sensor area
861.6mm²
366.6mm²
Sensor resolution
42 megapixel
14 megapixel
Anti aliasing filter
Aspect ratio
3:2 and 16:9
3:2 and 16:9
Peak resolution
7952 x 5304
4592 x 3056
Highest native ISO
32000
12800
Highest enhanced ISO
102400
25600
Minimum native ISO
100
100
RAW photos
Minimum enhanced ISO
50
-
Autofocusing
Manual focus
Touch focus
Autofocus continuous
Single autofocus
Autofocus tracking
Selective autofocus
Center weighted autofocus
Multi area autofocus
Autofocus live view
Face detection focus
Contract detection focus
Phase detection focus
Number of focus points
425
15
Cross focus points
-
3
Lens
Lens mounting type
Sony E
Sony/Minolta Alpha
Number of lenses
121
143
Crop factor
1
1.5
Screen
Screen type
Tilting
Fully Articulated
Screen size
3 inch
3 inch
Screen resolution
1,440 thousand dot
921 thousand dot
Selfie friendly
Liveview
Touch function
Viewfinder Information
Viewfinder
Electronic
Electronic
Viewfinder resolution
3,686 thousand dot
1,150 thousand dot
Viewfinder coverage
100%
100%
Viewfinder magnification
0.78x
0.73x
Features
Minimum shutter speed
30s
30s
Fastest shutter speed
1/8000s
1/4000s
Continuous shutter speed
10.0 frames/s
7.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation
Yes
Yes
Change white balance
Image stabilization
Inbuilt flash
Flash range
no built-in flash
10.00 m (@ ISO 100)
Flash options
Off, Auto, Fill-flash, Slow Sync, Rear Sync, Red-eye reduction, Wireless, Hi-speed sync
Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless
External flash
Auto exposure bracketing
WB bracketing
Fastest flash sync
-
1/160s
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions
3840 x 2160 (30p, 25p, 24p), 1920 x 1080 (60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p)
1920 x 1080 (60, 29.97 fps), 1440 x 1080 (30fps), 640 x 424 (29.97 fps)
Highest video resolution
3840x2160
1920x1080
Video file format
MPEG-4, AVCHD, XAVC S
MPEG-4, AVCHD, H.264
Microphone input
Headphone input
Connectivity
Wireless
Built-In
Eye-Fi Connected
Bluetooth
NFC
HDMI
USB
USB 3.1 Gen 1(5 GBit/sec)
USB 2.0 (480 Mbit/sec)
GPS
None
None
Physical
Environment seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight
657 gr (1.45 pounds)
500 gr (1.10 pounds)
Dimensions
127 x 96 x 74mm (5.0" x 3.8" x 2.9")
124 x 92 x 85mm (4.9" x 3.6" x 3.3")
DXO scores
DXO Overall score
100
70
DXO Color Depth score
26.0
22.8
DXO Dynamic range score
14.7
12.6
DXO Low light score
3523
591
Other
Battery life
650 images
340 images
Type of battery
Battery Pack
Battery Pack
Battery model
NP-FZ100
NP-FW50
Self timer
Yes (2 or 10 sec; continuous (3 or 5 exposures))
Yes (2 or 10 sec)
Time lapse feature
Type of storage
Two SD/SDHC/SDXC slots (UHS-II support on one)
SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo
Storage slots
2
1
Price at release
$2,800
$230