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Sony RX100 vs Sony A77

Portability
91
Imaging
50
Features
68
Overall
57
Sony Cyber-shot DSC-RX100 front
 
Sony SLT-A77 front
Portability
59
Imaging
63
Features
83
Overall
71

Sony RX100 vs Sony A77 Key Specs

Sony RX100
(Full Review)
  • 20MP - 1" Sensor
  • 3" Fixed Screen
  • ISO 100 - 25600
  • Optical Image Stabilization
  • 1920 x 1080 video
  • 28-100mm (F1.8-4.9) lens
  • 240g - 102 x 58 x 36mm
  • Announced August 2012
  • Replacement is Sony RX100 II
Sony A77
(Full Review)
  • 24MP - APS-C Sensor
  • 3" Fully Articulated Display
  • ISO 50 - 16000 (Expand to 25600)
  • Sensor based Image Stabilization
  • 1/8000s Max Shutter
  • 1920 x 1080 video
  • Sony/Minolta Alpha Mount
  • 732g - 143 x 104 x 81mm
  • Introduced October 2011
  • Superseded the Sony A700
  • Refreshed by Sony A77 II
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Sony RX100 vs Sony A77 Overview

Let's take a closer look at the Sony RX100 versus Sony A77, one being a Large Sensor Compact and the other is a Advanced DSLR and they are both created by Sony. The image resolution of the RX100 (20MP) and the A77 (24MP) is fairly comparable but the RX100 (1") and A77 (APS-C) boast totally different sensor sizes.

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The RX100 was revealed 11 months later than the A77 which means that they are both of a similar generation. Both of these cameras have different body design with the Sony RX100 being a Large Sensor Compact camera and the Sony A77 being a Mid-size SLR camera.

Before diving straight to a more detailed comparison, here is a simple summary of how the RX100 scores vs the A77 when considering portability, imaging, features and an overall grade.

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Reasons to pick Sony RX100 over the Sony A77

 RX100 A77 
IntroducedAugust 2012October 2011More recent by 11 months
Display resolution1229k921kSharper display (+308k dot)

Reasons to pick Sony A77 over the Sony RX100

 A77 RX100 
Display typeFully ArticulatedFixed Fully Articulating display
Selfie screen Take selfies

Common features in the Sony RX100 and Sony A77

 RX100 A77 
Manual focus More accurate focus
Display dimensions3"3"Equal display dimensions
Touch friendly display No Touch friendly display

Sony RX100 vs Sony A77 Physical Comparison

For anyone who is intending to lug around your camera, you will have to think about its weight and proportions. The Sony RX100 offers physical dimensions of 102mm x 58mm x 36mm (4.0" x 2.3" x 1.4") with a weight of 240 grams (0.53 lbs) and the Sony A77 has measurements of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") and a weight of 732 grams (1.61 lbs).

Contrast the Sony RX100 versus Sony A77 in the new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an Interchangeable Lens Camera will differ depending on the lens you use at that moment. Following is a front view sizing comparison of the RX100 vs the A77.

Sony RX100 vs Sony A77 size comparison

Taking into consideration size and weight, the portability grade of the RX100 and A77 is 91 and 59 respectively.

Sony RX100 vs Sony A77 top view buttons comparison

Sony RX100 vs Sony A77 Sensor Comparison

Generally, it can be difficult to visualise the contrast in sensor measurements only by seeing a spec sheet. The photograph here will give you a clearer sense of the sensor sizes in the RX100 and A77.

As you can see, both of these cameras have different megapixel count and different sensor measurements. The RX100 with its smaller sensor will make getting bokeh tougher and the Sony A77 will provide extra detail because of its extra 4 Megapixels. Greater resolution will also make it easier to crop images a bit more aggressively. The newer RX100 will have a benefit with regard to sensor tech.

Sony RX100 vs Sony A77 sensor size comparison

Sony RX100 vs Sony A77 Screen and ViewFinder

Sony RX100 vs Sony A77 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Sony RX100 Portrait photography information
Sony A77 Portrait photography information
64
you can focus manually
above average flash sync speed (1/2,000 seconds)
good megapixels (20 megapixels)
decent sensor size (1")
has face detection autofocus
supports RAW formats
can't use external flash
77
you can focus manually
decent MP (24 megapixels)
good sensor size (APS-C)
has face detection focus
supports RAW files
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Street Comparison

Street photography with Sony RX100
Street photography with Sony A77
79
built in image stabilization (Optical)
decent sensor size (1")
supports RAW formats
lighter than competition in class (240 grams)
above average high ISO (25,600)
screen is fixed
74
screen can move to multiple angles
has image stabilization (Sensor based)
good sensor size (APS-C)
supports RAW files
weather sealing
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Sports Comparison

Sony RX100 Sports photography info
Sony A77 Sports photography info
65
built in image stabilization (Optical)
good megapixels (20MP)
decent sensor size (1")
has tracking autofocus
lack of phase detect autofocus
74
great max shutter speed (1/8,000 seconds)
has image stabilization (Sensor based)
decent MP (24 megapixels)
good sensor size (APS-C)
weather sealing
sensor has phase detect auto focus
terrible battery pack (470 CIPA)
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Travel Comparison

Sony RX100 Travel photography info
Sony A77 Travel photography info
79
lighter than competition in class (240g)
good megapixels (20 megapixels)
has built in flash
relatively wide (28mm)
fast max aperture (f1.8)
display is not selfie friendly
62
weather sealing
decent MP (24MP)
built-in flash
screen is selfie friendly
doesn't have Time Lapse function
terrible battery pack (470 per charge)
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Landscape Comparison

Landscape photography with Sony RX100
Landscape photography with Sony A77
74
you can focus manually
relatively wide (28mm)
fast max aperture (f1.8)
nice screen size (3 inches)
built in image stabilization (Optical)
good megapixels (20 megapixels)
decent sensor size (1")
above average high ISO (25,600)
supports RAW formats
fixed lens (fixed lens mount)
71
you can focus manually
swap lenses (Sony/Minolta Alpha mount)
pretty good screen size (3")
has image stabilization (Sensor based)
decent MP (24 megapixels)
good sensor size (APS-C)
supports RAW files
weather sealing
terrible battery pack (470 shots)
doesn't have Time Lapse function
Photography Glossary

Vlogging Comparison

Sony RX100 Vlogging details
Sony A77 Vlogging details
38
relatively wide (28mm)
fast max aperture (f1.8)
built in image stabilization (Optical)
has face detection autofocus
video resolution high (1920 x 1080 pxls)
lighter than competition in class (240 grams)
display is not selfie friendly
does not have external microphone socket
76
screen is selfie friendly
has image stabilization (Sensor based)
has face detection focus
video res high (1920 x 1080 resolution)
includes external mic socket
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Sony RX100 vs Sony A77 Specifications

Detailed spec comparison table for Sony RX100 and Sony A77
 Sony Cyber-shot DSC-RX100Sony SLT-A77
General Information
Make Sony Sony
Model Sony Cyber-shot DSC-RX100 Sony SLT-A77
Type Large Sensor Compact Advanced DSLR
Announced 2012-08-28 2011-10-25
Physical type Large Sensor Compact Mid-size SLR
Sensor Information
Powered by - Bionz
Sensor type CMOS CMOS
Sensor size 1" APS-C
Sensor dimensions 13.2 x 8.8mm 23.5 x 15.6mm
Sensor surface area 116.2mm² 366.6mm²
Sensor resolution 20 megapixel 24 megapixel
Anti aliasing filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2 and 16:9
Highest Possible resolution 5472 x 3648 6000 x 4000
Maximum native ISO 25600 16000
Maximum enhanced ISO - 25600
Min native ISO 100 50
RAW images
Autofocusing
Focus manually
Touch focus
Continuous AF
AF single
Tracking AF
AF selectice
Center weighted AF
AF multi area
Live view AF
Face detection AF
Contract detection AF
Phase detection AF
Number of focus points 25 19
Cross focus points - 11
Lens
Lens mount fixed lens Sony/Minolta Alpha
Lens focal range 28-100mm (3.6x) -
Max aperture f/1.8-4.9 -
Macro focus distance 5cm -
Number of lenses - 143
Crop factor 2.7 1.5
Screen
Screen type Fixed Type Fully Articulated
Screen sizing 3 inch 3 inch
Resolution of screen 1,229 thousand dots 921 thousand dots
Selfie friendly
Liveview
Touch capability
Screen technology WhiteMagic TFT LCD -
Viewfinder Information
Viewfinder None Electronic
Viewfinder resolution - 2,359 thousand dots
Viewfinder coverage - 100%
Viewfinder magnification - 0.73x
Features
Min shutter speed 30s 30s
Max shutter speed 1/2000s 1/8000s
Continuous shutter rate 10.0 frames/s 12.0 frames/s
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes Yes
Change WB
Image stabilization
Inbuilt flash
Flash range - 12.00 m
Flash options Auto, On, Off, Slow Sync Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless
External flash
Auto exposure bracketing
White balance bracketing
Max flash synchronize 1/2000s 1/250s
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 1920 x 1080 (60 fps), 1440 x 1080 (30 fps), 1280 x 720 (30 fps), 640 x 480 (30 fps) 1920 x 1080 (60, 24 fps), 1440 x 1080 (30fps), 640 x 424 (29.97 fps)
Maximum video resolution 1920x1080 1920x1080
Video file format MPEG-4, AVCHD MPEG-4, AVCHD, H.264
Mic port
Headphone port
Connectivity
Wireless Eye-Fi Connected Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None BuiltIn
Physical
Environment sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 240g (0.53 lbs) 732g (1.61 lbs)
Physical dimensions 102 x 58 x 36mm (4.0" x 2.3" x 1.4") 143 x 104 x 81mm (5.6" x 4.1" x 3.2")
DXO scores
DXO Overall score 66 78
DXO Color Depth score 22.6 24.0
DXO Dynamic range score 12.4 13.2
DXO Low light score 390 801
Other
Battery life 330 shots 470 shots
Form of battery Battery Pack Battery Pack
Battery model NP-BX1 NP-FM500H
Self timer Yes (2 or 10 sec, Portrait 1/2) Yes (2 or 10 sec)
Time lapse feature With downloadable app
Storage type SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo
Card slots One One
Cost at release $448 $900