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Sony A900 vs Sony RX100 III

Portability
54
Imaging
66
Features
62
Overall
64
Sony Alpha DSLR-A900 front
 
Sony Cyber-shot DSC-RX100 III front
Portability
89
Imaging
51
Features
77
Overall
61

Sony A900 vs Sony RX100 III Key Specs

Sony A900
(Full Review)
  • 25MP - Full frame Sensor
  • 3" Fixed Screen
  • ISO 100 - 6400
  • Sensor based Image Stabilization
  • 1/8000s Maximum Shutter
  • No Video
  • Sony/Minolta Alpha Mount
  • 895g - 156 x 117 x 82mm
  • Announced October 2008
  • Newer Model is Sony A99
Sony RX100 III
(Full Review)
  • 20MP - 1" Sensor
  • 3" Tilting Screen
  • ISO 125 - 12800
  • Optical Image Stabilization
  • 1920 x 1080 video
  • 24-70mm (F1.8-2.8) lens
  • 290g - 102 x 58 x 41mm
  • Launched May 2014
  • Replaced the Sony RX100 II
  • Renewed by Sony RX100 IV
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Sony A900 vs Sony RX100 III Overview

Lets look a bit more closely at the Sony A900 vs Sony RX100 III, one is a Advanced DSLR and the latter is a Large Sensor Compact and both of them are designed by Sony. There exists a big gap between the sensor resolutions of the A900 (25MP) and RX100 III (20MP) and the A900 (Full frame) and RX100 III (1") boast different sensor sizes.

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The A900 was introduced 6 years earlier than the RX100 III which is quite a big gap as far as technology is concerned. Both cameras feature different body design with the Sony A900 being a Mid-size SLR camera and the Sony RX100 III being a Large Sensor Compact camera.

Before delving straight to a full comparison, here is a short overview of how the A900 grades versus the RX100 III for portability, imaging, features and an overall score.

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Reasons to pick Sony A900 over the Sony RX100 III

 A900 RX100 III 

Reasons to pick Sony RX100 III over the Sony A900

 RX100 III A900 
LaunchedMay 2014October 2008More modern by 67 months
Screen typeTiltingFixed Tilting screen
Screen resolution1229k922kCrisper screen (+307k dot)
Selfie screen Take selfies

Common features in the Sony A900 and Sony RX100 III

 A900 RX100 III 
Manually focus Dial exact focus
Screen size3"3"Same screen dimensions
Touch friendly screen Neither comes with Touch friendly screen

Sony A900 vs Sony RX100 III Physical Comparison

For anybody who is intending to carry around your camera often, you need to take into account its weight and measurements. The Sony A900 comes with physical measurements of 156mm x 117mm x 82mm (6.1" x 4.6" x 3.2") with a weight of 895 grams (1.97 lbs) whilst the Sony RX100 III has proportions of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") and a weight of 290 grams (0.64 lbs).

Take a look at the Sony A900 vs Sony RX100 III in the all new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into account, the weight of an Interchangeable Lens Camera will differ depending on the lens you use at that moment. Here is a front view measurements comparison of the A900 vs the RX100 III.

Sony A900 vs Sony RX100 III size comparison

Taking into account dimensions and weight, the portability rating of the A900 and RX100 III is 54 and 89 respectively.

Sony A900 vs Sony RX100 III top view buttons comparison

Sony A900 vs Sony RX100 III Sensor Comparison

More often than not, it's hard to picture the difference between sensor sizes merely by reading specs. The image here will help provide you a far better sense of the sensor sizing in the A900 and RX100 III.

All in all, both cameras feature different megapixel count and different sensor sizes. The A900 using its bigger sensor is going to make getting shallow DOF easier and the Sony A900 will offer extra detail using its extra 5 Megapixels. Higher resolution can also enable you to crop shots way more aggressively. The more aged A900 is going to be behind with regard to sensor technology.

Sony A900 vs Sony RX100 III sensor size comparison

Sony A900 vs Sony RX100 III Screen and ViewFinder

Sony A900 vs Sony RX100 III Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Sony A900 Portrait photography details
Sony RX100 III Portrait photography details
71
you can focus manually
MP count high (25MP)
sensor size is large (Full frame)
supports RAW files
does not have liveview
64
manual focus
great flash sync speed (1/2,000 seconds)
decent sensor resolution (20MP)
sensor size is decent (1")
supports face detection autofocus
delivers RAW formats
no external flash support
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Street Comparison

Sony A900 as a Street photography camera
Sony RX100 III as a Street photography camera
66
built in image stabilization (Sensor based)
sensor size is large (Full frame)
supports RAW files
weather proofing
screen does not articulate
85
has a tilting screen
image stabilization (Optical)
sensor size is decent (1")
delivers RAW formats
lighter than competition (290 grams)
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Sports Comparison

Sony A900 Sports photography highlights
Sony RX100 III Sports photography highlights
70
maximum shutter speed is high (1/8,000s)
built in image stabilization (Sensor based)
MP count high (25 megapixels)
sensor size is large (Full frame)
weather proofing
comes with phase detect autofocus
does not have liveview
continuous shooting slow (5.0 frames per second)
65
image stabilization (Optical)
decent sensor resolution (20MP)
sensor size is decent (1")
supports tracking autofocus
does not have phase detect autofocus
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Travel Comparison

Sony A900 as a Travel photography camera
Sony RX100 III as a Travel photography camera
54
weather proofing
MP count high (25 megapixels)
doesn't have Time Lapse function
screen isn't selfie friendly
85
lighter than competition (290g)
decent sensor resolution (20MP)
flash built-in
display is selfie friendly
rather wide (24mm)
good maximum aperture (f1.8)
Photography Glossary

Landscape Comparison

Sony A900 Landscape photography highlights
Sony RX100 III Landscape photography highlights
72
you can focus manually
change lenses (Sony/Minolta Alpha mount)
nice screen size (3")
built in image stabilization (Sensor based)
MP count high (25 megapixels)
sensor size is large (Full frame)
supports RAW files
weather proofing
two card slots
does not have liveview
doesn't have Time Lapse function
73
manual focus
rather wide (24mm)
good maximum aperture (f1.8)
screen size is decent (3")
image stabilization (Optical)
decent sensor resolution (20 megapixels)
sensor size is decent (1")
delivers RAW formats
fixed lens (fixed lens mount)
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Vlogging Comparison

Vlogging with Sony A900
Vlogging with Sony RX100 III
9
can't record video
80
rather wide (24mm)
good maximum aperture (f1.8)
display is selfie friendly
image stabilization (Optical)
supports face detection autofocus
high quality video (1920 x 1080 resolution)
lighter than competition (290 grams)
does not have external mic jack
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Sony A900 vs Sony RX100 III Specifications

Detailed spec comparison table for Sony A900 and Sony RX100 III
 Sony Alpha DSLR-A900Sony Cyber-shot DSC-RX100 III
General Information
Brand Name Sony Sony
Model type Sony Alpha DSLR-A900 Sony Cyber-shot DSC-RX100 III
Type Advanced DSLR Large Sensor Compact
Announced 2008-10-22 2014-05-15
Body design Mid-size SLR Large Sensor Compact
Sensor Information
Powered by Bionz Bionz X
Sensor type CMOS BSI-CMOS
Sensor size Full frame 1"
Sensor dimensions 35.9 x 24mm 13.2 x 8.8mm
Sensor area 861.6mm² 116.2mm²
Sensor resolution 25 megapixels 20 megapixels
Anti alias filter
Aspect ratio 3:2 and 16:9 1:1, 4:3, 3:2 and 16:9
Peak resolution 6048 x 4032 5472 x 3648
Highest native ISO 6400 12800
Minimum native ISO 100 125
RAW data
Autofocusing
Manual focusing
Autofocus touch
Continuous autofocus
Autofocus single
Tracking autofocus
Autofocus selectice
Center weighted autofocus
Autofocus multi area
Live view autofocus
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Total focus points 9 25
Lens
Lens support Sony/Minolta Alpha fixed lens
Lens zoom range - 24-70mm (2.9x)
Max aperture - f/1.8-2.8
Macro focusing distance - 5cm
Number of lenses 143 -
Focal length multiplier 1 2.7
Screen
Range of screen Fixed Type Tilting
Screen size 3" 3"
Resolution of screen 922k dot 1,229k dot
Selfie friendly
Liveview
Touch friendly
Screen technology TFT Xtra Fine color LCD -
Viewfinder Information
Viewfinder Optical (pentaprism) Electronic
Viewfinder resolution - 1,440k dot
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.74x 0.59x
Features
Minimum shutter speed 30 secs 30 secs
Fastest shutter speed 1/8000 secs 1/2000 secs
Continuous shutter speed 5.0 frames per second 10.0 frames per second
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Custom white balance
Image stabilization
Inbuilt flash
Flash distance no built-in flash -
Flash settings Auto, On, Off, Red-Eye, Slow Sync, Rear Curtain, Fill-in, Wireless -
Hot shoe
Auto exposure bracketing
WB bracketing
Fastest flash sync 1/250 secs 1/2000 secs
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions - 1920 x 1080 (60p/60i/24p), 1280 x 720 (60p/30p/24p/120p), 1440 x 1080 (30 fps), 640 x 480 (30 fps)
Highest video resolution None 1920x1080
Video data format - MPEG-4, AVCHD, XAVC S
Mic input
Headphone input
Connectivity
Wireless None Built-In
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 895g (1.97 pounds) 290g (0.64 pounds)
Physical dimensions 156 x 117 x 82mm (6.1" x 4.6" x 3.2") 102 x 58 x 41mm (4.0" x 2.3" x 1.6")
DXO scores
DXO Overall rating 79 67
DXO Color Depth rating 23.7 22.4
DXO Dynamic range rating 12.3 12.3
DXO Low light rating 1431 495
Other
Battery life 880 images 320 images
Battery format Battery Pack Battery Pack
Battery ID NP-FM500H NP-BX1
Self timer Yes (2 or 10 sec) Yes (2 or 10 sec, self-portrait, continuous)
Time lapse feature With downloadable app
Storage media Compact Flash (Type I or II), Memory Stick Duo / Pro Duo, UDMA Mode 5, Supports FAT12 / FAT16 / FAT32 SD/ SDHC/SDXC, Memory Stick Pro Duo/ Pro-HG Duo
Storage slots Two Single
Launch cost $2,736 $748