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Canon 20D vs Sony A77

The Canon EOS 20D and the Sony Alpha SLT-A77 are two enthusiast cameras that were officially introduced, respectively, in August 2004 and August 2011. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The Canon has a resolution of 8.2 megapixels, whereas the Sony provides 24 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Canon 20D
versus
Sony A77
Canon 20D   Sony A77
Digital single lens reflex Digital single lens reflex
Canon EF mount lenses Sony A mount lenses
8.2 MP – APS-C sensor 24 MP – APS-C sensor
no Video 1080/60p Video
ISO 100-1,600 (100 - 3,200) ISO 100-16,000 (50 - 25,600)
Optical viewfinder Electronic viewfinder (2359k dots)
1.8" LCD – 118k dots 3.0" LCD – 921k dots
Fixed screen (not touch-sensitive) Fully flexible screen (no touchscreen)
5 shutter flaps per second 12 shutter flaps per second
Lens stabilization onlyIn-body stabilization
not weather sealedWeathersealed body
700 shots per battery charge470 shots per battery charge
144 x 106 x 72 mm, 770 g 143 x 104 x 81 mm, 732 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 20D and the Sony Alpha SLT-A77? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

Body comparison

The side-by-side display below illustrates the physical size and weight of the Canon 20D and the Sony A77. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth measures are rounded to the nearest millimeter.

Size Canon 20D vs Sony A77
Compare 20D versus A77 top
Comparison 20D or A77 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A77 is somewhat smaller (3 percent) than the Canon 20D. Moreover, the A77 is markedly lighter (5 percent) than the 20D. It is noteworthy in this context that the A77 is splash and dust-proof, while the 20D does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the 20D gets 700 shots out of its BP-511A battery, while the A77 can take 470 images on a single charge of its NP-FM500H power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 20D 144 mm 106 mm 72 mm 770 g 700 n Aug 2004 1,499ebay.com
2.
 
Sony A77 143 mm 104 mm 81 mm 732 g 470 Y Aug 2011 1,399ebay.com
3.
 
Canon 7D II 149 mm 112 mm 78 mm 910 g 670 Y Sep 2014 1,799ebay.com
4.
 
Canon 60D 145 mm 106 mm 79 mm 755 g 1100 Y Aug 2010 1,399ebay.com
5.
 
Canon 7D 148 mm 111 mm 74 mm 860 g 800 Y Sep 2009 1,699ebay.com
6.
 
Canon 50D 146 mm 108 mm 74 mm 822 g 800 Y Aug 2008 1,299ebay.com
7.
 
Canon 40D 146 mm 108 mm 74 mm 822 g 750 n Aug 2007 1,299ebay.com
8.
 
Canon 30D 144 mm 106 mm 74 mm 785 g 750 n Feb 2006 1,399ebay.com
9.
 
Canon XT 127 mm 94 mm 64 mm 540 g 400 n Feb 2005 899ebay.com
10.
 
Canon 10D 150 mm 107 mm 75 mm 850 g 500 n Feb 2003 1,999ebay.com
11.
 
Canon Rebel 142 mm 99 mm 72 mm 649 g 400 n Aug 2003 899ebay.com
12.
 
Nikon D200 147 mm 113 mm 74 mm 920 g 400 Y Nov 2005 1,699ebay.com
13.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 1,299ebay.com
14.
 
Sony A6500 120 mm 67 mm 53 mm 453 g 350 Y Oct 2016 1,399ebay.com
15.
 
Sony A7 II 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 1,999ebay.com
16.
 
Sony A77 II 143 mm 104 mm 81 mm 647 g 480 Y May 2014 1,199ebay.com
17.
 
Sony A99 147 mm 111 mm 78 mm 812 g 500 Y Sep 2012 2,799ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The A77 was somewhat cheaper (by 7 percent) than the 20D at launch, but both cameras fall into the same price category. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.

Sensor comparison

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.

Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the A77 is 9 percent bigger. As a result of these sensor size differences, the cameras have format factors, respectively, of 1.6 (20D) and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon 20D and Sony A77 sensor measures

With 24MP, the A77 offers a higher resolution than the 20D (8.2MP), but the A77 has smaller individual pixels (pixel pitch of 3.91μm versus 6.42μm for the 20D). Yet, the A77 is a much more recent model (by 7 years) than the 20D, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units.

The resolution advantage of the Sony A77 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A77 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Canon 20D are 17.5 x 11.7 inches or 44.5 x 29.7 cm for good quality, 14 x 9.3 inches or 35.6 x 23.7 cm for very good quality, and 11.7 x 7.8 inches or 29.7 x 19.8 cm for excellent quality prints.

The Canon EOS 20D has a native sensitivity range from ISO 100 to ISO 1600, which can be extended to ISO 100-3200. The corresponding ISO settings for the Sony Alpha SLT-A77 are ISO 100 to ISO 16000, with the possibility to increase the ISO range to 50-25600.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

20D versus A77 MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under consideration, the A77 offers substantially better image quality than the 20D (overall score 16 points higher). The advantage is based on 2.1 bits higher color depth, 2.2 EV in additional dynamic range, and 0.2 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon 20D APS-C 8.2 3504 2336none21.911.072162
2.
 
Sony A77 APS-C 24.0 6000 40001080/60p24.013.280178
3.
 
Canon 7D II APS-C 20.0 5472 36481080/60p22.411.8108270
4.
 
Canon 60D APS-C 17.9 5184 34561080/30p22.211.581366
5.
 
Canon 7D APS-C 17.9 5184 34561080/30p22.011.785466
6.
 
Canon 50D APS-C 15.1 4752 3168none21.811.469663
7.
 
Canon 40D APS-C 10.1 3888 2592none22.111.370364
8.
 
Canon 30D APS-C 8.2 3504 2336none21.510.873659
9.
 
Canon XT APS-C 8.0 3456 2304none21.810.863760
10.
 
Canon 10D APS-C 6.3 3072 2048none21.110.957157
11.
 
Canon Rebel APS-C 6.3 3072 2048none21.010.854455
12.
 
Nikon D200 APS-C 10.0 3872 2592none22.311.558364
13.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
14.
 
Sony A6500 APS-C 24.0 6000 40004K/30p24.513.7140585
15.
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990
16.
 
Sony A77 II APS-C 24.0 6000 40001080/60p24.413.4101382
17.
 
Sony A99 Full Frame 24.0 6000 40001080/60p25.014.0155589

Many modern cameras cannot only take still pictures, but also record videos. The A77 indeed provides for movie recording, while the 20D does not. The highest resolution format that the A77 can use is 1080/60p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A77 has an electronic viewfinder (2359k dots), while the 20D has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinder in the A77 offers a wider field of view (100%) than the one in the 20D (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A77 has a higher magnification (0.73x vs 0.56x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Canon 20D, the Sony A77, and comparable cameras.

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Core Features
    Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Canon 20Doptical Y1.8 / 118 fixed n 1/8000s 5.0/s Y n
2.
 
Sony A772359 Y3.0 / 921 full-flex n 1/8000s 12.0/s Y Y
3.
 
Canon 7D IIoptical Y3.0 / 1040 fixed n 1/8000s 10.0/s Y n
4.
 
Canon 60Doptical Y3.0 / 1040 swivel n 1/8000s 5.3/s Y n
5.
 
Canon 7Doptical Y3.0 / 920 fixed n 1/8000s 8.0/s Y n
6.
 
Canon 50Doptical Y3.0 / 920 fixed n 1/8000s 6.3/s Y n
7.
 
Canon 40Doptical Y3.0 / 230 fixed n 1/8000s 6.5/s Y n
8.
 
Canon 30Doptical Y2.5 / 230 fixed n 1/8000s 5.0/s Y n
9.
 
Canon XToptical n1.8 / 115 fixed n 1/4000s 3.0/s Y n
10.
 
Canon 10Doptical Y1.8 / 118 fixed n 1/4000s 3.0/s Y n
11.
 
Canon Rebeloptical n1.8 / 118 fixed n 1/4000s 2.5/s Y n
12.
 
Nikon D200optical Y2.5 / 230 fixed n 1/8000s 5.0/s Y n
13.
 
Pentax K-3optical Y3.2 / 1037 fixed n 1/8000s 8.3/s Y Y
14.
 
Sony A65002359 n3.0 / 922 tilting Y 1/4000s 11.0/s Y Y
15.
 
Sony A7 II2400 n3.0 / 1230 tilting n 1/8000s 5.0/s n Y
16.
 
Sony A77 II2359 Y3.0 / 1229 full-flex n 1/8000s 12.0/s Y Y
17.
 
Sony A992359 Y3.0 / 1229 full-flex n 1/8000s 6.0/s n Y
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that differentiates the A77 and the 20D is in-body image stabilization (IBIS). The A77 reduces the risk of handshake-induced blur with all attached lenses, while the 20D offers no blur reduction with lenses that themselves do not provide optical image stabilization.

The A77 has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the 20D does not have a selfie-screen.

The 20D writes its imaging data to Compact Flash cards, while the A77 uses SDXC or Memory Stick PRO Duo cards.

Connectivity comparison

For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Canon EOS 20D and Sony Alpha SLT-A77 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
    Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon 20DY- / ----1.1---
2.
 
Sony A77Ystereo / monoY-mini2.0---
3.
 
Canon 7D IIYstereo / monoYYmini3.0---
4.
 
Canon 60DYmono / monoY-mini2.0---
5.
 
Canon 7DYmono / -Y-mini2.0---
6.
 
Canon 50DY- / ---mini2.0---
7.
 
Canon 40DY- / ----2.0---
8.
 
Canon 30DY- / ----2.0---
9.
 
Canon XTY- / ----2.0---
10.
 
Canon 10DY- / ----1.1---
11.
 
Canon RebelY- / ----1.1---
12.
 
Nikon D200Y- / ----2.0---
13.
 
Pentax K-3Ymono / monoYYmini3.0---
14.
 
Sony A6500Ystereo / monoY-micro2.0YY-
15.
 
Sony A7 IIYstereo / monoYYmicro2.0YY-
16.
 
Sony A77 IIYstereo / monoY-mini2.0YY-
17.
 
Sony A99Ystereo / monoYYmini2.0---

Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.

Travel and landscape photographers will find it useful that the A77 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the 20D and the A77 have been discontinued, but can regularly be found used on ebay. The 20D was replaced by the Canon 30D, while the A77 was followed by the Sony A77 II. Further information on the features and operation of the 20D and A77 can be found, respectively, in the Canon 20D Manual (free pdf) or the online Sony A77 Manual.

Review summary

So how do things add up? Which of the two cameras – the Canon 20D or the Sony A77 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

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Reasons to prefer the Canon EOS 20D:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Longer lasting: Can take more shots (700 versus 470) on a single battery charge.
  • More heavily discounted: Has been available for much longer (launched in August 2004).

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Arguments in favor of the Sony Alpha SLT-A77:

  • More detail: Has more megapixels (24 vs 8.2MP), which boosts linear resolution by 71%.
  • Better image quality: Scores substantially higher (16 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (2.1 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (2.2 EV of extra DR).
  • Broader imaging potential: Can capture not only stills but also 1080/60p video.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.73x vs 0.56x).
  • Larger screen: Has a bigger rear LCD (3.0" vs 1.8") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (921k vs 118k dots).
  • More flexible LCD: Has a full-flex screen for odd-angle shots in portrait or landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (12 vs 5 flaps/sec) to capture the decisive moment.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • Easier geotagging: Features an internal GPS sensor to log localization data.
  • Faster data transfer: Supports a more advanced USB protocol (2.0 vs 1.1).
  • More modern: Reflects 7 years of technical progress since the 20D launch.

If the count of individual advantages (bullet points above) is taken as a guide, the A77 is the clear winner of the contest (18 : 3 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

20D 03:18 A77

How about other alternatives? Do the specifications of the Canon 20D and the Sony A77 place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing whether the two cameras rank among the cream of the crop.

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the 20D and the A77 in practical situations. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is where reviews by experts come in. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 20D......+ +.... Aug 2004 1,499ebay.com
2.
 
Sony A775/591/100..81/100..5/5 Aug 2011 1,399ebay.com
3.
 
Canon 7D II4.5/5+3.5/584/1004/54.5/5 Sep 2014 1,799ebay.com
4.
 
Canon 60D5/5+..79/1004/54.5/5 Aug 2010 1,399ebay.com
5.
 
Canon 7D5/5+ +..84/1004.5/54.5/5 Sep 2009 1,699ebay.com
6.
 
Canon 50D..+ +..+ +4.5/54.5/5 Aug 2008 1,299ebay.com
7.
 
Canon 40D..+ +..+ +4.5/54.5/5 Aug 2007 1,299ebay.com
8.
 
Canon 30D..+ +..+ +o.. Feb 2006 1,399ebay.com
9.
 
Canon XT..80/100..+ +o.. Feb 2005 899ebay.com
10.
 
Canon 10D......+ +.... Feb 2003 1,999ebay.com
11.
 
Canon Rebel......+ +.... Aug 2003 899ebay.com
12.
 
Nikon D200..+ +..+ +o.. Nov 2005 1,699ebay.com
13.
 
Pentax K-34/5....83/1005/55/5 Oct 2013 1,299ebay.com
14.
 
Sony A65005/5+ +3.5/585/1004.5/54.5/5 Oct 2016 1,399ebay.com
15.
 
Sony A7 II5/5+4/582/1004.5/55/5 Nov 2014 1,999ebay.com
16.
 
Sony A77 II4/5....80/1004.5/55/5 May 2014 1,199ebay.com
17.
 
Sony A995/5....84/1004.5/54.5/5 Sep 2012 2,799ebay.com
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Canon 20D vs Sony A77

    Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.

    Camera Specifications
    Camera Model Canon 20D Sony A77
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Canon EF mount lenses Sony A mount lenses
    Launch Date August 2004 August 2011
    Launch Price USD 1,499 USD 1,399
    Sensor Specs Canon 20D Sony A77
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor APS-C Sensor
    Sensor Size 22.5 x 15.0 mm 23.5 x 15.6 mm
    Sensor Area 337.5 mm2 366.6 mm2
    Sensor Diagonal 27 mm 28.2 mm
    Crop Factor 1.6x 1.5x
    Sensor Resolution 8.2 Megapixels 24 Megapixels
    Image Resolution 3504 x 2336 pixels 6000 x 4000 pixels
    Pixel Pitch 6.42 μm 3.91 μm
    Pixel Density 2.43 MP/cm2 6.55 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability no Video 1080/60p Video
    ISO Setting 100 - 1,600 ISO 100 - 16,000 ISO
    ISO Boost 100 - 3,200 ISO 50 - 25,600 ISO
    Image Processor DIGIC 2 BIONZ X
    DXO Sensor Quality (score) 62 78
    DXO Color Depth (bits) 21.9 24.0
    DXO Dynamic Range (EV) 11.0 13.2
    DXO Low Light (ISO) 721 801
    Screen Specs Canon 20D Sony A77
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.56x 0.73x
    Viewfinder Resolution 2359k dots
    Top-Level Screen Control Panel Control Panel
    LCD Framing Live View
    Rear LCD Size 1.8inch 3.0inch
    LCD Resolution 118k dots 921k dots
    LCD Attachment Fixed screen Fully flexible screen
    Shooting Specs Canon 20D Sony A77
    Focus System Phase-detect AF Phase-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/8000s
    Continuous Shooting 5 shutter flaps/s 12 shutter flaps/s
    Shutter Life Expectancy50 000 actuations150 000 actuations
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash Built-in Flash Built-in Flash
    Storage Medium CF cards MS or SDXC cards
    Single or Dual Card Slots Single card slot Single card slot
    Connectivity Specs Canon 20D Sony A77
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 1.1 USB 2.0
    HDMI Port no HDMI mini HDMI
    Microphone Port no MIC socket External MIC port
    Wifi Support no Wifi no Wifi
    Geotagging no internal GPS GPS built-in
    Body Specs Canon 20D Sony A77
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type BP-511A NP-FM500H
    Battery Life (CIPA)700 shots per charge470 shots per charge
    Body Dimensions 144 x 106 x 72 mm
    (5.7 x 4.2 x 2.8 in)
    143 x 104 x 81 mm
    (5.6 x 4.1 x 3.2 in)
    Camera Weight 770 g (27.2 oz) 732 g (25.8 oz)
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