General

Sony SLT A77 II Sony Alpha DSLR-A850
Brand
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Sony Sony
Lowest price
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$1,198.00 Unknown
Announced
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April 2014 August 2009

Sensor

Type
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CMOS CMOS
Crop factor
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1.5x 1x
Megapixels
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24.7 MP 24.4 MP
Light sensitivity
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25,600 ISO 3,200 ISO
Light sensitivity (boost)
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Unknown 6,400 ISO
Sensor cleaning
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Yes Yes

Sensor (Advanced)

True resolution
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24.7 MP 24.4 MP
Native resolution
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5736 × 4304 6048 × 4032
Pixel size
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14.8 µm² 35.3 µm²

Screen

Type
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LCD LCD
Size
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3" 3"
Resolution
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1,228k dots 921k dots
Touch screen
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No No
Flips out
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Yes No
Live view
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Yes No

Lenses

Lens availability
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126 lenses 82 lenses
Lens mount
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Sony Alpha Sony Alpha (Full-frame)

Form factor

Size
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143×104×81 mm 156×117×82 mm
Depth
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3.2" 3.2"
Weight
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647 g 895 g
Interchangeable lenses
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Yes Yes
Waterproof
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No No
Weather sealed
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Yes Yes
Built-in focus motor
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No No

Viewfinder

Type
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Digital Pentaprism
Viewfinder size
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0.71x 0.74x
Coverage
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100% 98%

Movies

Format
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1080p @ 60fps None
Supports 24p
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Yes n/a
High-speed framerate
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None n/a
External mic jack
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Yes n/a
Autofocus
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Phase detection None
Continuous focus
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Yes n/a
All formats
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  1. 640 x 424 @ 30fps
  2. 1,440 x 1,080 @ 30fps
  3. 1080p @ 24fps
  4. 1080p @ 60fps
n/a

Features

Panorama
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Yes No
HDR
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Yes No
3D
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No No
Image stabilization
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  1. Sensor shift
  1. Sensor shift
Supports RAW
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Yes Yes
GPS
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No No

Performance

Startup delay
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Unknown 500 ms
Shutter lag
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Unknown 184 ms
Battery life
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410 shots 880 shots
Continuous shooting
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12 fps 3 fps

Focus system

Autofocus
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Phase detection Phase detection
Focus points
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79 19
Cross type focus points
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15 1

Shutter

Max
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1/8000s 1/8000s
Min
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30s 30s

Flash

Built-in flash
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Yes No
Popup
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Yes n/a
External connection
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Yes Yes

Storage

Storage slots
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1 2
Supported formats
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  1. Memory Stick PRO Duo
  2. Memory Stick PRO-HG Duo
  3. SD
  4. SDHC
  5. SDXC
  1. CompactFlash (Type I)
  2. CompactFlash (Type II)
  3. Memory Stick
  4. Memory Stick Duo
  5. Memory Stick PRO Duo

DXO Mark Scores

Image quality
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82.0 79.0
Color depth
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24.4 bits 23.8 bits
Dynamic range
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13.4 EV 12.2 EV
Low light performance
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1,013 ISO 1,415 ISO
Sony SLT A77 II
SLT A77 II
Sony

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Sony Alpha DSLR-A850
Alpha DSLR-A850
Sony

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