Pentax K-7 vs Sony A77
Portability
60 Imaging
54 Features
69 Overall
60
60 Imaging
54 Features
69 Overall
60
Portability
59 Imaging
63 Features
83 Overall
71
59 Imaging
63 Features
83 Overall
71
Pentax K-7 vs Sony A77 Key Specs
Pentax K-7
(Full Review)
(Full Review)
- 15MP - APS-C Sensor
- 3" Fixed Display
- ISO 100 - 2000 (Increase to 6400)
- Sensor based Image Stabilization
- 1/8000s Maximum Shutter
- 1280 x 720 video
- Pentax KAF2 Mount
- 750g - 131 x 97 x 73mm
- Introduced October 2009
- Newer Model is Pentax K-5
Sony A77
(Full Review)
(Full Review)
- 24MP - APS-C Sensor
- 3" Fully Articulated Screen
- ISO 50 - 16000 (Raise to 25600)
- Sensor based Image Stabilization
- 1/8000s Maximum Shutter
- 1920 x 1080 video
- Sony/Minolta Alpha Mount
- 732g - 143 x 104 x 81mm
- Launched October 2011
- Previous Model is Sony A700
- Renewed by Sony A77 II
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On this page, we will be matching up the Pentax K-7 and Sony A77, both Advanced DSLR digital cameras by companies Pentax and Sony. There exists a considerable gap between the sensor resolutions of the K-7 (15MP) and A77 (24MP) but both cameras have the same sensor measurements (APS-C).
Photobucket discusses licensing 13 billion images with AI firmsThe K-7 was revealed 3 years earlier than the A77 which is quite a large difference as far as technology is concerned. Both cameras have the same body design (Mid-size SLR).
Before delving into a detailed comparison, here is a concise summary of how the K-7 scores against the A77 for portability, imaging, features and an overall mark.
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This is a preview of the gallery images for Pentax K-7 & Sony SLT-A77. The full galleries are viewable at Pentax K-7 Gallery & Sony A77 Gallery.
Reasons to pick Pentax K-7 over the Sony A77
| K-7 | A77 |
|---|
Reasons to pick Sony A77 over the Pentax K-7
| A77 | K-7 | |||
|---|---|---|---|---|
| Launched | October 2011 |  | October 2009 | Newer by 25 months |
| Screen type | Fully Articulated |  | Fixed | Fully Articulating screen |
| Selfie screen |  | Take selfies |
Common features in the Pentax K-7 and Sony A77
| K-7 | A77 | |||
|---|---|---|---|---|
| Manual focus |  | Dial accurate focus | ||
| Screen dimensions | 3" |  | 3" | Equal screen measurements |
| Screen resolution | 921k |  | 921k | Equal screen resolution |
| Touch screen |  | Missing Touch screen |
Pentax K-7 vs Sony A77 Physical Comparison
In case you're planning to travel with your camera, you will have to factor its weight and proportions. The Pentax K-7 comes with outside dimensions of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") having a weight of 750 grams (1.65 lbs) while the Sony A77 has measurements of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") having a weight of 732 grams (1.61 lbs).
See the Pentax K-7 and Sony A77 in our completely new Camera plus Lens Size Comparison Tool.
Bear in mind, the weight of an ILC will vary based on the lens you are using at that moment. The following is a front view dimensions comparison of the K-7 compared to the A77.
Factoring in dimensions and weight, the portability score of the K-7 and A77 is 60 and 59 respectively.
Pentax K-7 vs Sony A77 Sensor Comparison
Typically, it can be hard to envision the contrast between sensor dimensions just by reviewing specifications. The picture here will help offer you a better sense of the sensor dimensions in the K-7 and A77.
Plainly, each of these cameras provide the same sensor dimensions albeit not the same resolution. You can expect the Sony A77 to deliver more detail because of its extra 9MP. Higher resolution will help you crop pictures more aggressively. The more aged K-7 is going to be behind in sensor tech.
Pentax K-7 vs Sony A77 Screen and ViewFinder
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Portrait Comparison
Portrait photography with Pentax K-7
Portrait photography with Sony A77
focusing manually
MP count good (15MP)
nice sensor size (APS-C)
features face detection focusing
exports RAW files
you can focus manually
MP count good (24MP)
good sensor size (APS-C)
includes face detection focusing
saves RAW formats
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Pentax K-7 Street photography advice
Sony A77 Street photography advice
image stabilization (Sensor based)
nice sensor size (APS-C)
exports RAW files
environment proofing
fixed screen
screen articulates fully
built in image stabilization (Sensor based)
good sensor size (APS-C)
saves RAW formats
environment sealing
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Pentax K-7 Sports photography factors
Sony A77 Sports photography factors
max shutter speed is good (1/8,000 seconds)
image stabilization (Sensor based)
MP count good (15MP)
nice sensor size (APS-C)
environment proofing
supports phase detect AF
max frames per second low (5.0 frames/s)
max shutter speed is good (1/8,000 seconds)
built in image stabilization (Sensor based)
MP count good (24 megapixels)
good sensor size (APS-C)
environment sealing
comes with phase detect AF
low battery (470 CIPA)
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Pentax K-7 Travel photography information
Sony A77 Travel photography information
environment proofing
MP count good (15 megapixels)
has built in flash
doesn't posses selfie friendly display
environment sealing
MP count good (24 megapixels)
built-in flash
display is selfie friendly
lack of Time Lapse mode
low battery (470 per charge)
Photography GlossaryLandscape Comparison
Pentax K-7 Landscape photography factors
Sony A77 Landscape photography factors
focusing manually
interchangeable lenses (Pentax KAF2 mount)
screen size is good (3 inches)
image stabilization (Sensor based)
MP count good (15MP)
nice sensor size (APS-C)
exports RAW files
environment proofing
you can focus manually
interchangeable lenses (Sony/Minolta Alpha mount)
screen size is good (3 inches)
built in image stabilization (Sensor based)
MP count good (24MP)
good sensor size (APS-C)
saves RAW formats
environment sealing
low battery (470 shots)
lack of Time Lapse mode
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Pentax K-7 as a Vlogging camera
Sony A77 as a Vlogging camera
image stabilization (Sensor based)
features face detection focusing
doesn't posses selfie friendly display
video res low (1280 x 720 pxls)
lack of external mic socket
display is selfie friendly
built in image stabilization (Sensor based)
includes face detection focusing
high quality video (1920 x 1080 pxls)
does have external mic socket
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Pentax K-7 vs Sony A77 Specifications
| Pentax K-7 | Sony SLT-A77 | |
|---|---|---|
| General Information | ||
| Brand | Pentax | Sony |
| Model type | Pentax K-7 | Sony SLT-A77 |
| Type | Advanced DSLR | Advanced DSLR |
| Introduced | 2009-10-02 | 2011-10-25 |
| Physical type | Mid-size SLR | Mid-size SLR |
| Sensor Information | ||
| Chip | Prime II | Bionz |
| Sensor type | CMOS | CMOS |
| Sensor size | APS-C | APS-C |
| Sensor dimensions | 23.4 x 15.6mm | 23.5 x 15.6mm |
| Sensor area | 365.0mm² | 366.6mm² |
| Sensor resolution | 15MP | 24MP |
| Anti alias filter | ||
| Aspect ratio | 3:2 | 3:2 and 16:9 |
| Maximum resolution | 4672 x 3104 | 6000 x 4000 |
| Maximum native ISO | 2000 | 16000 |
| Maximum boosted ISO | 6400 | 25600 |
| Minimum native ISO | 100 | 50 |
| RAW photos | ||
| Autofocusing | ||
| Manual focusing | ||
| AF touch | ||
| Continuous AF | ||
| AF single | ||
| AF tracking | ||
| Selective AF | ||
| AF center weighted | ||
| AF multi area | ||
| AF live view | ||
| Face detect focusing | ||
| Contract detect focusing | ||
| Phase detect focusing | ||
| Total focus points | 11 | 19 |
| Cross type focus points | - | 11 |
| Lens | ||
| Lens support | Pentax KAF2 | Sony/Minolta Alpha |
| Amount of lenses | 151 | 143 |
| Focal length multiplier | 1.5 | 1.5 |
| Screen | ||
| Type of display | Fixed Type | Fully Articulated |
| Display sizing | 3 inch | 3 inch |
| Resolution of display | 921 thousand dots | 921 thousand dots |
| Selfie friendly | ||
| Liveview | ||
| Touch capability | ||
| Display technology | TFT color LCD with AR coating | - |
| Viewfinder Information | ||
| Viewfinder type | Optical (pentaprism) | Electronic |
| Viewfinder resolution | - | 2,359 thousand dots |
| Viewfinder coverage | 100% | 100% |
| Viewfinder magnification | 0.61x | 0.73x |
| Features | ||
| Slowest shutter speed | 30 secs | 30 secs |
| Maximum shutter speed | 1/8000 secs | 1/8000 secs |
| Continuous shooting rate | 5.0 frames/s | 12.0 frames/s |
| Shutter priority | ||
| Aperture priority | ||
| Expose Manually | ||
| Exposure compensation | Yes | Yes |
| Change WB | ||
| Image stabilization | ||
| Inbuilt flash | ||
| Flash distance | 13.00 m | 12.00 m |
| Flash settings | Auto, On, Off, Red-eye, Slow Sync, Rear Curtain, Wireless | Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless |
| Hot shoe | ||
| AEB | ||
| White balance bracketing | ||
| Maximum flash synchronize | 1/180 secs | 1/250 secs |
| Exposure | ||
| Multisegment metering | ||
| Average metering | ||
| Spot metering | ||
| Partial metering | ||
| AF area metering | ||
| Center weighted metering | ||
| Video features | ||
| Supported video resolutions | 1280 x 720 (30 fps), 1536 x 1024 (30 fps), 640 x 480 (30 fps), 320 x 240 (30 fps) | 1920 x 1080 (60, 24 fps), 1440 x 1080 (30fps), 640 x 424 (29.97 fps) |
| Maximum video resolution | 1280x720 | 1920x1080 |
| Video format | Motion JPEG | MPEG-4, AVCHD, H.264 |
| Mic port | ||
| Headphone port | ||
| Connectivity | ||
| Wireless | None | Eye-Fi Connected |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 2.0 (480 Mbit/sec) | USB 2.0 (480 Mbit/sec) |
| GPS | None | BuiltIn |
| Physical | ||
| Environmental sealing | ||
| Water proofing | ||
| Dust proofing | ||
| Shock proofing | ||
| Crush proofing | ||
| Freeze proofing | ||
| Weight | 750 gr (1.65 lbs) | 732 gr (1.61 lbs) |
| Physical dimensions | 131 x 97 x 73mm (5.2" x 3.8" x 2.9") | 143 x 104 x 81mm (5.6" x 4.1" x 3.2") |
| DXO scores | ||
| DXO All around rating | 61 | 78 |
| DXO Color Depth rating | 22.6 | 24.0 |
| DXO Dynamic range rating | 10.6 | 13.2 |
| DXO Low light rating | 536 | 801 |
| Other | ||
| Battery life | 980 pictures | 470 pictures |
| Battery type | Battery Pack | Battery Pack |
| Battery ID | D-LI90 | NP-FM500H |
| Self timer | Yes (2 or 10 sec) | Yes (2 or 10 sec) |
| Time lapse feature | ||
| Storage type | SD/SDHC/MMC | SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo |
| Card slots | Single | Single |
| Cost at launch | $599 | $900 |