Camera Rocket Review Our evaluation of A55 vs A37

Image Quality

RAW image quality independent of lens

SLT A55
8.8
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 A55
7.0
SLT A37
8.6
Focus lag, cross type focus points and focus points

Responsiveness

How much delay is there between you and your photo?

SLT A55
8.2
SLT A37
9.2
Focus lag, continuous shooting and Startup delay

Reviews

What do the experts think?

SLT A55
8.9
SLT A37
9.4
Reviews from techradar.com, sonyalpharumors.com, photographyblog.com and 2 more

No winner declared

Too close to call

Benchmarks Real world tests of SLT A55 vs A37

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

SLT A55
816 ISO
SLT A37
799 ISO

Focus lag Delay between fully pressing shutter to image capture

SLT A55
220 ms
SLT A37
109 ms

Shutter lag Delay to take a photo when prefocused

SLT A55
103 ms
SLT A37
57 ms

Startup delay Delay from power on to first photo

SLT A55
900 ms
SLT A37
900 ms

Continuous shooting Delay between fully pressing shutter to image capture

SLT A55
10 fps
SLT A37
7 fps

Battery life How many photos per battery charge (CIPA)

SLT A55
330 photos
SLT A37
500 photos

Features Key features of the SLT A55  vs A37 

Megapixels Maximum resolution images are captured at

SLT A55
16 MP
SLT A37
16 MP

Max ISO Maximum light sensitivity of the sensor

SLT A55
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 A55
3"
SLT A37
2.6"

Viewfinder size Large viewfinders are brighter and more comfortable to use

SLT A55
0.72x
SLT A37
0.71x

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

SLT A55
22.9 microns
SLT A37
22.8 microns

Reviews Word on the street

SLT A55  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

7.8
7.3
For point-and-shoot upgraders who want better video, the A55V gets a qualified recommendation; the quality is pretty solid, it can autofocus well enough for casual use (albeit loudly-you'll definitely want to use a hot-shoe microphone), and the interchangeable-lens system means you'll be able to put on a long zoom lens for shooting your kids' sports or school plays.
SLT A55

Overall

7.9 Out of 10
8.8 Out of 10

Specifications Full list of technical specs

sensor

SLT A55  vs
A37 
Type CMOS CMOS
Megapixels 16 MP 16 MP
Resolution 4912 x 3264 4912 x 3264
Size APS-C APS-C
Area 23.5 x 15.6 mm 23.4 x 15.6 mm
Crop factor 1.5x 1.5x
Pixel size 22.9 microns 22.8 microns
Light sensitivity 100 ISO to 12,800 ISO 100 ISO to 16,000 ISO
Light sensitivity (Boost) 12,800 ISO to 25,600 ISO 100 ISO to 25,600 ISO
Codecs
RAW
JPEG
Self cleaning sensor Yes Yes

focus system

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

viewfinder

Viewfinder mirror Translucent Opaque
Viewfinder Yes Yes
Type Electronic Electronic
Magnification 1.1x 1.09x
Viewfinder size 0.72x 0.71x

performance

Max continuous shooting 10 fps 7 fps
Battery life 330 500
Continuous shooting
10 fps, JPEG
7 fps
5.5 fps
Focus lag 220 ms 109 ms
Shutter lag 103 ms 57 ms
Startup delay 900 ms 900 ms

video

SLT A55  vs
A37 
Video 1920 x 1080 @ 30 fps 1920 x 1080 @ 29.97 fps
Shoots video in 24p No 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

display

Type LCD LCD
Size 3" 2.6"
Resolution 921 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 1/4000 s 1/4000 s

form factor

Size 124 x 92 x 85 mm 124 x 92 x 85 mm
Thickness 85 mm 85 mm
Weight 500 g 506 g
Is weather sealed No No

features

Is a smart camera No No
Includes a GPS Yes No
Supports HDR Yes Yes
Automatic panorama Yes Yes
Create realistic 3D images Yes Yes
Image stabilization
Sensor shift
Sony SLT A55
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Sony SLT A37
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