Sony SLT-A77 II vs Sony Alpha A99 II

  • APS-C
  • 24 megapixels
  • Sony/Minolta Alpha
  • 49
    Overall
  • 25
    Imaging
  • 64
    Features
  • 70
    Size
  • 0
    Price
  • Full frame
  • 42 megapixels
  • Sony/Minolta Alpha
  • 63
    Overall
  • 45
    Imaging
  • 69
    Features
  • 71
    Size
  • 0
    Price

Sony SLT-A77 II vs Sony Alpha A99 II: a Complete Review and Comparison

Are you looking for the best camera to suit your needs? Due to a wide range of options, making a wise and weighted decision can be rather challenging. Which specs to keep in mind? What are the key pros and cons of each model? This comparison should give some helpful hints!

The goal of this overview is to provide a detailed comparison of two popular camera models from Semi-Pro DSLR category, introduced by Sony. We are going to take a closer look at the technical and physical characteristics, features, and performance. The models we are going to assess and compare in this review are SLT-A77 II and Alpha A99 II. The models we are going to compare in our review have different sensors. Sony SLT-A77 II features a CMOS sensor that has a resolution of 24.0 MP. Sony Alpha A99 II, on the contrary, has a different BSI-CMOS sensor with 24.0 MP resolution.

Now, before we can move on to our comparison, let's take a moment to look at the key characteristics of Sony SLT-A77 II and Sony Alpha A99 II.

Sony SLT-A77 II Key Features:

  • 24.0 MP APS-C CMOS sensor
  • ISO 50 - 25600
  • Image Stabilization: Yes
  • 3″ Fully Articulated Screen
  • ViewFinder: Yes
  • 12.0 fps Continuous Shooting
  • Video: 1920 x 1080 (60p, 60i, 30p), 1440 x 1080 (30p), 640 x 480 (30p)
  • Built-in Wireless: Yes
  • Dimensions: 143 x 104 x 81 mm
  • Weight: 647 g
  • Environmental Sealing: Yes
  • Built-in GPS: No
  • Replaced Sony A77.

Sony Alpha A99 II Key Features:

  • 42.0 MP Full frame BSI-CMOS sensor
  • ISO 100 - 25600 (Expands to 50 - 102400)
  • Image Stabilization: Yes
  • 3″ Fully articulated Screen
  • ViewFinder: Yes
  • 12.0 fps Continuous Shooting
  • Built-in Wireless: Yes
  • Dimensions: 143 x 104 x 76 mm
  • Weight: 849 g
  • Environmental Sealing: Yes
  • Built-in GPS: No
  • Replaced Sony A99.

Being a newer model, Sony SLT-A77 II substituted Sony A77.

Why is Sony SLT-A77 II a better choice than Sony Alpha A99 II

Built-In Flash Yes vs No All the lenses are stabilized
Flash Range 12 vs No 12 better flash range
Screen Type Fully Articulated vs Fully articulated Flexible shooting positions
Weight 647 g vs 849 g 202 g lighter

What are the key reasons to pick Sony Alpha A99 II over Sony SLT-A77 II

Bluetooth Yes vs No Connect your camera to other devices via Bluetooth
Timelapse Recording Yes vs No Creative shooting
Storage Slots 2 vs 1 Extra storage slot
Sensor Resolution 42.0 MP vs 24.0 MP 42.9% more pixels
Sensor Area 861.6 mm2 vs 366.6 mm2 57.5% larger pixel area
Number Of Focus Points 399 vs 79 320 more focus points
Number Of Cross Focus Points 79 vs 15 64 more cross focus points
Battery Life 490 shots vs 480 shots 10 more frames with a single charge
Max Video Resolution 3840 x 2160 vs 1920 x 1080 Higher Resolution Video
Headphone Port Yes vs No Has headphone port
Dxo Color Depth 25.4 vs 24.4 Better color depth
Dxo Low Light Iso 2317 vs 1013 Better High ISO performance
Viewfinder Magnification 0.78 vs 0.73 0.05 better magnification

Key PROs of Sony SLT-A77 II and Sony Alpha A99 II

Screen Size 3″ | 3″ Large display
Screen Resolution 1,229k dots | 1,229k dots High resolution screen
Viewfinder Electronic | Electronic Better framing and control
Raw Support Yes | Yes Better image quality
Sensor Resolution 24.0 MP | 42.0 MP Bigger prints and more details
AutoFocus Face Detection Yes | Yes Very handy for portraits
Microphone Port Yes | Yes High quality audio recording option
Bracketing Yes | Yes Useful for tough lighting conditions and HDR
Continuous Shooting 12.0 fps | 12.0 fps Nice continuous shooting
Image Stabilization Yes | Yes Built-in stabilization
Flash Sync Port Yes | Yes Port for Flash Sync
Environmental Sealing Yes | Yes Shoot at tough conditions

Key CONs of Sony SLT-A77 II and Sony Alpha A99 II

Touch Screen No | No No touch screen

Sony SLT-A77 II vs Sony Alpha A99 II: Comparing Two Models By Physical Characteristics

Before heading straight to the technical characteristics of each model, let’s start with comparing their physical specs. Let’s start with looking at the physical difference of the two products. Below are images that clearly show the sizes of Sony SLT-A77 II and Sony Alpha A99 II from the front view.

Sony SLT-A77 II
Sony Alpha A99 II
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Now, let’s go on and see how the reviewed models are different or similar by the top view.

Sony SLT-A77 II
Sony Alpha A99 II
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After looking at these images, you should get a clear idea of each model’s dimensions and how they are different from each other. However, we are not going to stop there. The next characteristic worth looking at is the weight. Of course, not every photographer is concerned about the weight, for example, it wouldn't be a decisive point for those who shoot in a studio. However, it is still an important factor because if you happen to go on a long photo session or just love having the camera with you wherever you go, you want to be sure that the chosen model isn't too heavy.

Speaking of weight, Sony SLT-A77 II is a lighter option of these two, as it weights 202g less than the Sony Alpha A99 II. This difference, in fact, can become a significant disadvantage for the photographers, who prefer to have their cameras with them wherever they go.

Battery values for Semi-Pro DSLR cameras:
Sony SLT-A77 II — 480 shots
Sony Alpha A99 II — 490 shots
Min: 390 shots
Average: 871 shots
Max: 1840 shots
Thickness values for Semi-Pro DSLR cameras:
Sony SLT-A77 II — 81 mm
Sony Alpha A99 II — 76 mm
Min: 64 mm
Average: 75 mm
Max: 86 mm
Weight values for Semi-Pro DSLR cameras:
Sony SLT-A77 II — 647 g
Sony Alpha A99 II — 849 g
Min: 479 g
Average: 783 g
Max: 1074 g

Comparing Sony SLT-A77 II and Sony Alpha A99 II by the type of Sensor and Resolution

Sensor is, without a doubt, the most significant element of every digital camera. Its type, size, and resolution are the factors that define the quality of future shots. Thus, it is barely possible to pick a suitable camera without looking at these specs.

Are Sony SLT-A77 II and Sony Alpha A99 II any different in terms of sensor type?

In fact, that's exactly what makes these two models really different. Thus, it is a good point to consider if your are choosing between these two cameras. Sony SLT-A77 II features a 24.0 MP APS-C sized CMOS sensor and boasts of a Bionz X processor . Sony Alpha A99 II, in its turn, comes with a 42.0 MP Full frame sized BSI-CMOS sensor and Bionz X processor , which makes it significantly different from the first model.

Take a look below to find the comparison of Sony SLT-A77 II and Sony Alpha A99 II by the size of their sensors.

Sony SLT-A77 II
Sony Alpha A99 II
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One more distinctive feature of compared models is the sensor size. Sony Alpha A99 II is equipped with a sensor that is 0.4x larger than the one featured in Sony SLT-A77 II. Compared to the cameras with smaller sensor area, the ones with larger sensors ensure more control on the blurry background and depth of field if you shoot in the same aperture and focal length. Thus, the first model has a significant advantage here.

For Which Fields Of Photography Are Sony SLT-A77 II and Sony Alpha A99 II Suitable?

If you are interested in photography or has made a career in this field, you should know that different types of shooting actually require different camera characteristics. While one model can produce outstanding portraits, at the same time, it can be terrible for shooting landscapes, and so on. Thus, before you purchase a specific camera, it is vital to decide, which type of shooting you do most often and consider an option that suits it the most.

This section of our comparison is devoted to the performance of Sony SLT-A77 II and Sony Alpha A99 II in different fields of photography. Here we are going to look at the five main areas and evaluate how well each of the reviewed models performs in them. This will help you choose an option that suits your needs the most depending on your interest in one or several of these fields.

Photography Type Sony SLT-A77 II Sony Alpha A99 II
Portrait Photography
98%
99%
Street Photography
98%
95%
Sports Photography
95%
100%
Daily Photography
44%
68%
Landscape Photography
95%
99%

Sony SLT-A77 II for Portrait Photography

Advantages:

  • Large APS-C (23.5 x 15.6 mm) sensor
  • High resolution sensor (24 MP)
  • Fast Max Shutter Speed (1/8000s)
  • Image Stabilization
  • Face Detection Focusing

Disadvantages:

No Significant Disadvantages

Sony Alpha A99 II for Portrait Photography

Advantages:

  • Large Full frame (35.9 x 24 mm) sensor
  • High resolution sensor (42 MP)
  • Fast Max Shutter Speed (1/8000s)
  • Image Stabilization
  • Face Detection Focusing

Disadvantages:

No Significant Disadvantages

Sony SLT-A77 II for Street Photography

Advantages:

  • Built-in View Finder
  • Live View
  • Fully Articulated Screen
  • Image Stabilization
  • Large APS-C(23.5 x 15.6 mm) sensor

Disadvantages:

  • Big size (143 x 104 x 81 mm)

Sony Alpha A99 II for Street Photography

Advantages:

  • Built-in View Finder
  • Live View
  • Image Stabilization
  • Large Full frame(35.9 x 24 mm) sensor

Disadvantages:

  • Big size (143 x 104 x 76 mm)

Sony SLT-A77 II for Sports Photography

Advantages:

  • Fast Continuous Shooting (12.0 fps)
  • Environmental Sealing
  • Fast Max Shutter Speed (1/8000s)
  • Big Number of autofocus Points (79)
  • Big size (143 x 104 x 81 mm)

Disadvantages:

  • Small Number of CrossFocus Points (15)
  • Bad Low Light ISO (1013)
  • Small battery life (480 shots)

Sony Alpha A99 II for Sports Photography

Advantages:

  • Fast Continuous Shooting (12.0 fps)
  • Environmental Sealing
  • Fast Max Shutter Speed (1/8000s)
  • Big Number of autofocus Points (399)
  • Big Number of CrossFocus Points (79)
  • Nice Low Light ISO (2317)
  • Big size (143 x 104 x 76 mm)

Disadvantages:

  • Small battery life (490 shots)

Sony SLT-A77 II for Daily Photography

Advantages:

  • Large APS-C (23.5 x 15.6 mm) sensor
  • Built-in Flash
  • Built-in View Finder
  • Live View
  • Wireless Connectivity
  • Video is available

Disadvantages:

  • Big weight (647 g)
  • Big size (143 x 104 x 81 mm)

Sony Alpha A99 II for Daily Photography

Advantages:

  • Large Full frame (35.9 x 24 mm) sensor
  • Built-in View Finder
  • Live View
  • Wireless Connectivity
  • Video is available

Disadvantages:

  • Big weight (849 g)
  • Big size (143 x 104 x 76 mm)
  • No Built-in Flash

Sony SLT-A77 II for Landscape Photography

Advantages:

  • Large APS-C (23.5 x 15.6 mm) sensor
  • High resolution sensor (24 MP)
  • Good Dynamic Range (13.4)
  • Environmental Sealing
  • Live View
  • RAW Support

Disadvantages:

  • Bad Low Light ISO (1013)

Sony Alpha A99 II for Landscape Photography

Advantages:

  • Large Full frame (35.9 x 24 mm) sensor
  • High resolution sensor (42 MP)
  • Good Dynamic Range (13.4)
  • Environmental Sealing
  • Live View
  • RAW Support
  • Nice Low Light ISO (2317)

Disadvantages:

No Significant Disadvantages

Comparison of Sony SLT-A77 II vs Sony Alpha A99 II: Final Verdict

Hopefully, our detailed overview of these models has helped you consider all the main specs, pros and cons of each cameras. Maybe, after reading this comparison, some of you have already decided which option to opt for depending on your needs and preferences. However, if you are still wondering which option is a better choice, Sony SLT-A77 II or Sony Alpha A99 II, below you can see what scores each of them received in five different aspects. To wrap up, we have used our unique Decision Algorithm that assesses different camera models upon 63 different factors including their price, and, if possible, DxO Mark scores. This algorithm allows us to make our verdict more consistent and objective.

What is our final verdict? Based on our comparison and the final scores of Sony SLT-A77 II and Sony Alpha A99 II here is what we can say in conclusion:

According all the factors that we considered in the process of comparing these two cameras, Sony Alpha A99 II deserves a higher Total Score than the Sony SLT-A77 II. Thus, if you are choosing between these options, we would recommend you to choose the first model over the other one.

Sony SLT-A77 II vs Sony Alpha A99 II Table Of Technical Specs

For better understanding of each model’s technical characteristics, find the detailed comparison below:

Sony SLT-A77 II Sony Alpha A99 II
General
Brand Sony Sony
Model SLT-A77 II Alpha A99 II
Announced May 21, 2014 Sep 19, 2016
Body Type Mid-size SLR Mid-size SLR
Sensor
Sensor Type CMOS BSI-CMOS
Sensor Size APS-C Full frame
Sensor Dimensions 23.5 x 15.6 mm 35.9 x 24 mm
Sensor Area 366.60 mm2 861.60 mm2
Sensor Resolution 24.0 MP 42.0 MP
Max Image Resolution 6000 x 4000 7952 x 5304
Max Native ISO 25,600 25,600
Max Boosted ISO n/a 102,400
Min Native ISO 50 100
RAW Support Yes Yes
Lens
Manual Focus Yes Yes
Lens Mount Sony/Minolta Alpha Sony/Minolta Alpha
Number of Lenses 141 141
Focal Length Multiplier 1.5x 1x
Macro Focus Range
AutoFocus
AF Touch No No
AF Continuous Yes Yes
AF Single Yes Yes
AF Tracking Yes Yes
AF Selective Yes Yes
AF Center Yes Yes
AF Multi Area Yes Yes
AF Live View Yes Yes
AF Face Detection Yes Yes
AF Contrast Detection Yes Yes
AF Phase Detection Yes Yes
Number of Focus Points 79 399
Number of Cross Focus Points 15 79
Screen
Screen Type Fully Articulated Fully articulated
Screen Size 3″ 3″
Screen Resolution 1,229k dots 1,229k dots
Live View Yes Yes
Touch Screen No No
ViewFinder
ViewFinder Electronic Electronic
ViewFinder Resolution 2,359k dots 2,359k dots
ViewFinder Coverage 100% 100%
ViewFinder Magnification 0.73 0.78
Photography Features
Min Shutter Speed 30 s 30 s
Max Shutter Speed 1/8000 s 1/8000 s
Continuous Shooting 12.0 fps 12.0 fps
Shutter Priority Yes Yes
Aperture Priority Yes Yes
Manual Exposure Mode Yes Yes
Exposure Compensation Yes Yes
Custom White Balance Yes Yes
Image Stabilization Yes Yes
Built-in Flash Yes No
Flash Range 12 0
Flash Modes Auto, fill, rear sync, slow sync auto, fill, slow sync, redeye reduction, rear sync, high-speed sync, wireless
External Flash Yes Yes
AE Bracketing Yes Yes
WB Bracketing Yes Yes
Exposure Modes
Multi-Segment Yes Yes
Average No Yes
Spot Yes Yes
Partial No No
AF-Area No No
Center Weighted Yes No
DxO Sensor Scores
DxO Sensor Score 82 92
DxO Color Depth 24.4 25.4
DxO Dynamic Range 13.4 13.4
DxO Low Light ISO 1013 2317
Video Features
Video Resolutions 1920 x 1080 (60p, 60i, 30p), 1440 x 1080 (30p), 640 x 480 (30p) n/a
Max Video Resolution 1920 x 1080 3840 x 2160
Video Formats MPEG-4, AVCHD, XAVC S MPEG-4, AVCHD, XAVC S
Microphone Port Yes Yes
Headphone Port No Yes
Connectivity
Wireless Connectivity Yes Yes
HDMI Yes Yes
USB USB 2.0 USB 2.0
Physical
Environmental Sealing Yes Yes
Water Proof No No
Dust Proof No No
Shock Proof No No
Crush Proof No No
Freeze Proof No No
Weight 647 g 849 g
Physical Dimensions 143 x 104 x 81 mm 143 x 104 x 76 mm
Battery Life 480 shots 490 shots
Battery Type Battery Pack NP-FM500H lithium-ion battery & charger
Battery Model NP-FM500H n/a
Other Features
Self Timer Yes Yes
Timelapse Recording No Yes
GPS
Storage Type SD/ SDHC/SDXC, Memory Stick Pro Duo/ Pro-HG Duo Dual SD/SDHC/SDXC/MS Duo slots
Storage Slots 1 2

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