Camera Rocket Review Our evaluation of A99 vs A37

Image Quality

RAW image quality independent of lens

SLT A99
9.9
SLT A37
8.8
DxOMark Low light, DxOMark Color depth and DxOMark Dynamic range

Focusing

How fast and easily does the camera nail focus

SLT A99
9.0
SLT A37
8.5
Focus lag, cross type focus points and focus points

Responsiveness

How much delay is there between you and your photo?

SLT A99
9.5
SLT A37
9.4
Focus lag, continuous shooting and Startup delay

Reviews

What do the experts think?

SLT A99
9.2
SLT A37
9.4
Reviews from sonyalpharumors.com, imaging-resource.com, techradar.com and 5 more

Camera Rocket Score

Image Quality, Focusing, Responsiveness and Reviews

SLT A99
9.4
SLT A37
9.1

Winner
Sony SLT A99 

Camera Rocket recommends the Sony SLT A99  based on its image quality, focusing and responsiveness.

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Benchmarks Real world tests of SLT A99 vs A37

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

SLT A99
1,555 ISO
SLT A37
799 ISO

Focus lag Delay between fully pressing shutter to image capture

SLT A99
127 ms
SLT A37
109 ms

Startup delay Delay from power on to first photo

SLT A99
700 ms
SLT A37
900 ms

Continuous shooting Delay between fully pressing shutter to image capture

SLT A99
6 fps
SLT A37
7 fps

Battery life How many photos per battery charge (CIPA)

SLT A99
500 photos
SLT A37
500 photos

Color depth The number of variations of color the camera can capture

SLT A99
25.0 bits
SLT A37
23.3 bits

Features Key features of the SLT A99  vs A37 

Megapixels Maximum resolution images are captured at

SLT A99
24 MP
SLT A37
16 MP

Max ISO Maximum light sensitivity of the sensor

SLT A99
25,600 ISO
SLT A37
25,600 ISO

Focus points How many different points the camera can focus on

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

SLT A99
3"
SLT A37
2.6"

Viewfinder size Large viewfinders are brighter and more comfortable to use

SLT A99
0.71x
SLT A37
0.71x

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

SLT A99
35.8 microns
SLT A37
22.8 microns

Reviews Word on the street

SLT A99  vs A37 

9.0
10.0
As with Live View, continuous phase-detection AF is possible whilst shooting movies on the A37, a distinct advantage over most DSLR cameras and fast enough to rival Compact System Cameras like the Panasonic Lumix GH series.
SLT A37

8.3
7.3
In addition to the complete set of essential features for a pro camera, the A99V has a couple of unique features for this class, including built-in GPS (which strains the already lackluster battery life a bit), in-camera image stabilization (both Canon and Nikon use lens-based IS), and a built-in stereo microphone (which is nice to have in a pinch).
SLT A99

Overall

8.4 Out of 10
8.8 Out of 10

Specifications Full list of technical specs

sensor

SLT A99  vs
A37 
Type EXMOR CMOS
Megapixels 24 MP 16 MP
Resolution 6000 x 4000 4912 x 3264
Size Full frame APS-C
Area 35.8 x 24 mm 23.4 x 15.6 mm
Crop factor 1.0x 1.5x
Pixel size 35.8 microns 22.8 microns
Light sensitivity 100 ISO to 25,600 ISO 100 ISO to 16,000 ISO
Codecs
RAW
JPEG
Self cleaning sensor Yes Yes

focus system

Type Phase detection Phase detection
Focus points 19 15
Cross type focus points 11 3

viewfinder

Viewfinder mirror Translucent Opaque
Viewfinder Yes Yes
Type Electronic Electronic
Coverage 100% 100%
Magnification 0.71x 1.09x
Viewfinder size 0.71x 0.71x
Display type OLED LCD

performance

Max continuous shooting 6 fps 7 fps
Battery life 500 500
Continuous shooting
7 fps
6 fps
5.5 fps
Focus lag 127 ms 109 ms
Startup delay 700 ms 900 ms

video

SLT A99  vs
A37 
Video 1920 x 1080 @ 60 fps (17 Mbps, AVCHD, MPEG-4) 1920 x 1080 @ 29.97 fps
Shoots video in 24p Yes Yes
Shoots high speed video No No
External mic jack 3.5mm 3.5mm
Autofocus while shooting video Phase detection Phase detection
Autofocus type Phase detection Phase detection
Autofocus supports continuous Yes Yes

display

Type LCD LCD
Size 3" 2.6"
Resolution 1,229 k dots 230 k dots
Has a touch screen No No
Has a flip out screen Yes Yes
Supports live view Yes Yes

shutter

Min 30 s 30 s
Max 1/8000 s 1/4000 s

form factor

Size 147 x 111 x 78 mm 124 x 92 x 85 mm
Thickness 78 mm 85 mm
Weight 812 g 506 g
Is weather sealed Yes No

features

Includes a GPS Yes No
Supports HDR Yes Yes
Automatic panorama Yes Yes
Create realistic 3D images No Yes
Image stabilization
Sensor shift
Sony SLT A99
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Sony SLT A37
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