Camera Rocket Review Our evaluation of A99 vs DSLR-A850

Image Quality

RAW image quality independent of lens

SLT A99
10.0
DSLR-A850
10.0
DxOMark Low light, DxOMark Color depth and DxOMark Dynamic range

Focusing

How fast and easily does the camera nail focus

SLT A99
6.6
DSLR-A850
6.6
focus points

Responsiveness

How much delay is there between you and your photo?

SLT A99
10.0
DSLR-A850
10.0
continuous shooting

Reviews

What do the experts think?

SLT A99
9.2
DSLR-A850
8.8
Reviews from sonyalpharumors.com, imaging-resource.com, techradar.com and 5 more

No winner declared

Too close to call

Benchmarks Real world tests of SLT A99 vs DSLR-A850

Low light image quality Highest ISO setting that still achieves great image quality

SLT A99
1,555 ISO
DSLR-A850
1,415 ISO

Resolution Results from photos of standard resolution charts

SLT A99
2,900 LPH
DSLR-A850
2,150 LPH

Focus lag Delay between fully pressing shutter to image capture

SLT A99
127 ms
DSLR-A850
184 ms

Startup delay Delay from power on to first photo

SLT A99
700 ms
DSLR-A850
500 ms

Continuous shooting Delay between fully pressing shutter to image capture

SLT A99
6 fps
DSLR-A850
3 fps

Battery life How many photos per battery charge (CIPA)

SLT A99
500 photos
DSLR-A850
880 photos

Features Key features of the SLT A99  vs DSLR-A850 

Megapixels Maximum resolution images are captured at

SLT A99
24 MP
DSLR-A850
24.4 MP

Max ISO Maximum light sensitivity of the sensor

SLT A99
25,600 ISO
DSLR-A850
6,400 ISO

Focus points How many different points the camera can focus on

Screen size Larger screens make it easier to preview and review photos

Viewfinder size Large viewfinders are brighter and more comfortable to use

SLT A99
0.71x
DSLR-A850
0.74x

Pixel size How much area of the sensor is dedicated to each pixel

SLT A99
35.8 microns
DSLR-A850
35.3 microns

Reviews Word on the street

SLT A99  vs DSLR-A850 

8.4
7.5
With a CIPA standard capacity of 410 shots using the EVF, it provides less than half the shooting capacity of the A99's rivals; a direct consequence of having to support full-time live view.
SLT A99

Specifications Full list of technical specs

sensor

SLT A99  vs
DSLR-A850 
Type EXMOR CMOS
Megapixels 24 MP 24.4 MP
Resolution 6000 x 4000 6048 x 4032
Size Full frame Full frame
Area 35.8 x 24 mm 35.9 x 24 mm
Crop factor 1.0x 1.0x
Pixel size 35.8 microns 35.3 microns
Light sensitivity 100 ISO to 25,600 ISO 200 ISO to 3,200 ISO
Codecs
RAW
JPEG
Self cleaning sensor Yes Yes
Tested vertical resolution 2,900 LPH 2,150 LPH
Tested horizontal resolution 2,900 LPH 2,150 LPH

focus system

Type Phase detection Phase detection
Focus points 19 19
Cross type focus points 11 1
Supports continuous Yes No

shutter

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

form factor

Size 147 x 111 x 78 mm 156 x 117 x 82 mm
Thickness 78 mm 82 mm
Weight 812 g 895 g
Is weather sealed Yes Yes

features

Includes a GPS Yes No
Supports HDR Yes No
Automatic panorama Yes No
Create realistic 3D images No No
Image stabilization
Sensor shift

video

SLT A99  vs
DSLR-A850 
Video 1920 x 1080 @ 60 fps (17 Mbps, AVCHD, MPEG-4) None
Shoots video in 24p Yes N/A
Shoots high speed video No N/A
External mic jack 3.5mm N/A
Autofocus while shooting video Phase detection N/A
Autofocus type Phase detection N/A
Autofocus supports continuous Yes N/A

display

Type LCD LCD
Size 3" 3"
Resolution 1,229 k dots 921 k dots
Has a touch screen No No
Has a flip out screen Yes No
Supports live view Yes No

viewfinder

Viewfinder mirror Translucent Opaque
Viewfinder Yes Yes
Type Electronic Pentaprism
Coverage 100% 98%
Magnification 0.71x 0.74x
Viewfinder size 0.71x 0.74x

performance

Max continuous shooting 6 fps 3 fps
Battery life 500 880
Continuous shooting
3 fps, JPEG
6 fps
Focus lag 127 ms 184 ms
Startup delay 700 ms 500 ms
Sony SLT A99
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Sony DSLR-A850
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