Camera Rocket Review Our evaluation of A77 vs A58

Image Quality

RAW image quality independent of lens

SLT A77
8.9
SLT A58
8.7
DxOMark Low light, DxOMark Color depth and DxOMark Dynamic range

Focusing

How fast and easily does the camera nail focus

SLT A77
8.7
SLT A58
6.4
Focus lag, cross type focus points and focus points

Responsiveness

How much delay is there between you and your photo?

SLT A77
8.9
SLT A58
7.8
Focus lag, continuous shooting and Startup delay

Reviews

What do the experts think?

SLT A77
9.3
SLT A58
9.2
Reviews from sonyalpharumors.com, techradar.com, trustedreviews.com, photographyblog.com and 3 more

No winner declared

Too close to call

Benchmarks Real world tests of SLT A77 vs A58

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

SLT A77
801 ISO
SLT A58
753 ISO

Resolution Results from photos of standard resolution charts

SLT A77
2,400 LPH
SLT A58
2,400 LPH

Focus lag Delay between fully pressing shutter to image capture

SLT A77
124 ms
SLT A58
326 ms

Shutter lag Delay to take a photo when prefocused

SLT A77
54 ms
SLT A58
54 ms

Startup delay Delay from power on to first photo

SLT A77
3,100 ms
SLT A58
1,900 ms

Continuous shooting Delay between fully pressing shutter to image capture

SLT A77
12 fps
SLT A58
8 fps

Features Key features of the SLT A77  vs A58 

Megapixels Maximum resolution images are captured at

SLT A77
24 MP
SLT A58
20.1 MP

Max ISO Maximum light sensitivity of the sensor

SLT A77
25,600 ISO
SLT A58
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 A77
3"
SLT A58
2.7"

Viewfinder size Large viewfinders are brighter and more comfortable to use

SLT A77
0.72x
SLT A58
0.65x

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

SLT A77
15.3 microns
SLT A58
18.3 microns

Reviews Word on the street

SLT A77  vs A58 

8.0
8.0
We're pleased to report that the Sony Alpha A77's offering is leaps and bounds ahead of anything we've experienced before, with a very impressive 1.3cm, 2,359,296-dot resolution OLED screen that provides the closest performance to an optical viewfinder that we've had the pleasure of using to date.
SLT A77

Specifications Full list of technical specs

sensor

SLT A77  vs
A58 
Type CMOS CMOS
Megapixels 24 MP 20.1 MP
Resolution 6000 x 4000 5176 x 3880
Size APS-C APS-C
Area 23.5 x 15.6 mm 23.5 x 15.6 mm
Crop factor 1.5x 1.5x
Pixel size 15.3 microns 18.3 microns
Light sensitivity 100 ISO to 16,000 ISO 100 ISO to 16,000 ISO
Light sensitivity (Boost) 50 ISO to 25,600 ISO 16,000 ISO to 25,600 ISO
Codecs
RAW
JPEG
Self cleaning sensor Yes Yes
Tested vertical resolution 2,400 LPH 2,400 LPH
Tested horizontal resolution 2,400 LPH 2,400 LPH

focus system

Type Phase detection Phase detection
Focus points 19 15
Cross type focus points 11 3
Supports continuous No Yes

shutter

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

form factor

Size 143 x 104 x 81 mm 129 x 95 x 78 mm
Thickness 81 mm 78 mm
Weight 732 g 492 g
Is weather sealed Yes No

features

Includes a GPS Yes No
Supports HDR Yes Yes
WiFi None None
Automatic panorama Yes Yes
Create realistic 3D images Yes No
Image stabilization
Sensor shift

video

SLT A77  vs
A58 
Video 1920 x 1080 @ 60 fps 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" 2.7"
Resolution 921 k dots 460 k dots
Has a touch screen No No
Has a flip out screen Yes No
Supports live view Yes Yes

viewfinder

Viewfinder mirror Translucent Translucent
Viewfinder Yes Yes
Type Electronic Electronic
Coverage 100% 100%
Magnification 1.1x 1x
Viewfinder size 0.72x 0.65x
Display type OLED LCD
Display resolution 2,400 k dots 1,440 k dots

performance

Max continuous shooting 12 fps 8 fps
Battery life 530 690
Continuous shooting
12 fps, JPEG
8 fps
Focus lag 124 ms 326 ms
Shutter lag 54 ms 54 ms
Startup delay 3,100 ms 1,900 ms
Sony SLT A77
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Sony SLT A58
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