In depth comparison and review of Sony Alpha SLT-A58K + DT 18-55mm and Pentax K-50. Compare design, sensors, proximity features, memory capacities and other important specifications and features to easily choose the right camera for you. Our goal is to help you uncover differences between the products and find the digital camera that will best fit your needs.
| DESIGN AND DIMENSIONS | Sony Alpha SLT-A58K + DT 18-55mm | Pentax K-50 |
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| Product Type | Digital camera - SLR with Live View mode, movie recording | Digital camera - 1080p - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | DT 18-55mm lens | Body only |
| Height | 9.55 cm | 9.65 cm |
| Width | 12.86 cm | 12.9 cm |
| Depth | 7.77 cm | 7 cm |
| Weight | 492 g | 590 g |
| Body Material | - | Stainless steel, fibre reinforced polycarbonate |
| Enclosure Colour | Black | Black | White | Red |
| Protection | - | Weatherproof, freezeproof, dust-resistant |
| Optical Zoom | 3x | - |
| SENSOR | Sony Alpha SLT-A58K + DT 18-55mm | Pentax K-50 |
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| Sensor Resolution | 20.1 Megapixel | 16.3 Megapixel |
|---|---|---|
| Optical Sensor Type | Exmor APS HD CMOS | CMOS |
| Total Pixels | 20,400,000 pixels | 16,500,000 pixels |
| Effective Sensor Resolution | 20,100,000 pixels | 16,300,000 pixels |
| Optical Sensor Size | APS-C (23.2 x 15.4 mm) | APS-C (23.7 x 15.7 mm) |
| Sensor Dust Reduction | - | Yes |
| Sensor Features | Anti-Dust coating | Dust Reduction (image sensor vibration), Special Protect (SP) coating |
| Image Stabiliser | Optical (SteadyShot INSIDE) | Optical (image sensor shift mechanism) |
| Built-in Optical Image Stabiliser | Yes | Yes |
| PROCESSOR | Sony Alpha SLT-A58K + DT 18-55mm | Pentax K-50 |
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| Image Processor | BIONZ | PRIME M |
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| LENS | Sony Alpha SLT-A58K + DT 18-55mm | Pentax K-50 |
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| Type | Zoom lens - 3x zoom - 18 - 55 mm - f/3.5-5.6 DT SAM II - zoom | - |
|---|---|---|
| Focal Length Equivalent to 35mm Camera | 27 - 82.5mm | - |
| Focus Adjustment | Automatic, manual | - |
| Min Focus Distance | 25 cm | - |
| Max View Angle | 76 degree(s) | - |
| Zoom Adjustment | Manual | - |
| Lens Construction | 7 groups / 8 elements | - |
| Filter Size | 55 mm | - |
| Lens Mounting Type | - | Pentax KAF2 |
| Features | Aspherical lens, Smooth Autofocus Motor (SAM) | - |
| FOCUSING | Sony Alpha SLT-A58K + DT 18-55mm | Pentax K-50 |
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| Auto Focus | TTL phase detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 15 | 11 |
| Auto Focus Features | Manual Focus Check Live View | Focus Peaking function |
| AE/AF Control | Face-priority AF, Subject-tracking AF | Face-priority AF, Subject-tracking AF |
| Face Detection | Face Detection AF/AE/FE/WB, Face Recognition, Smile Shutter | Yes |
| VIEWFINDER | Sony Alpha SLT-A58K + DT 18-55mm | Pentax K-50 |
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| Viewfinder Type | Electronic - OLED | Optical - fixed eye-level pentaprism |
|---|---|---|
| Viewfinder Colour Support | Colour | - |
| Viewfinder Diagonal Size | 0.5" | - |
| Viewfinder Resolution | 1,440,000 pixels | - |
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 0.88x | 0.92x |
| Optical Viewfinder Dioptric Correction Range | -4 to +4 | -2.5 to +1.5 |
| Field of View Crop Factor | 1.5 | - |
| Interchangeable Focusing Screens | - | Yes |
| Features | Auto eye sensor | - |
| EXPOSURE & WHITE BALANCE | Sony Alpha SLT-A58K + DT 18-55mm | Pentax K-50 |
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| ISO (Max) | 16000 | 51200 |
|---|---|---|
| Light Sensitivity | ISO auto, ISO 100-16000 | ISO 100-51200, ISO auto (100-51200) |
| Exposure Metering | Multi-segment, centre-weighted, spot | Multi-segment, centre-weighted, spot |
| Exposure Metering Zones | 1200 | 77 |
| Exposure Modes | Programme, bulb, automatic, manual, aperture-priority, shutter-priority | Programme, bulb, automatic, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority |
| Shooting Programs | Landscape, portrait mode, macro, night portrait, sports mode, sunset, handheld twilight, Night View | Landscape, portrait mode, macro, museum, surf & snow, PET, Blue Sky, food, night scene, sunset, candle, night snapshot, night scene with portrait, kids, Stage, night scene HDR, moving object, forest, backlight silhouette |
| Special Effects | Black & White, Vivid, sunset, soft focus, landscape, portrait, miniature, Retro, partial colour, Toy camera, Posterisation, High contrast monochrome, Pop Colour, HDR Painting, Rich-tone monochrome, Soft High-key | Soft, Slim, Pastel, Colour, fisheye, natural, bright, Vibrant, Sketch, monochrome, Muted, landscape, portrait, Water Colour, miniature, Cross Process, Retro, Colour Extract, Toy camera, starburst, High contrast, Colour Invert, Bleach Bypass, Posterisation, Radiant, Reversal Film, Shading, Tone Expansion |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Incandescent, fluorescent, cloudy, Flash, daylight, shade, 2500K - 9900K | Cloudy, tungsten light, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), fluorescent light (daylight white) |
| Max Shutter Speed | 1/4000 sec | 1/6000 sec |
| Min Shutter Speed | 30 sec | 30 sec |
| Exposure Compensation | ±3 EV range, in 1/3 EV steps | ±5 EV range, in 1/2 or 1/3 EV steps |
| Auto Exposure Bracketing | 5 steps in 1/3, 1/2, 2/3, 2 or 3 EV steps | 3 steps in 1/2 or 1/3 EV steps |
| White Balance Bracketing | Yes | - |
| X-sync Speed | 1/160 sec | 1/180 sec |
| Exposure Range | - | EV 0-22 (ISO 100) |
| DISPLAY | Sony Alpha SLT-A58K + DT 18-55mm | Pentax K-50 |
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| Type | 2.7" LCD display | 3" LCD display |
|---|---|---|
| Display Format | 460,800 pixels | 921,000 pixels |
| Display Form Factor | Folding | Built-in |
| Display Features | Contrast control, display brightness control | Display brightness control, display colour control |
| FLASH | Sony Alpha SLT-A58K + DT 18-55mm | Pentax K-50 |
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| Camera Flash | Pop-up flash | Pop-up flash |
|---|---|---|
| Guide Number (m / ISO 100) | 10 | 12 |
| Flash Modes | Fill-in mode, rear curtain sync, slow synchro, auto mode, flash OFF mode, red-eye reduction | Fill-in mode, rear curtain sync, slow synchro, auto mode, flash OFF mode, red-eye reduction, P-TTL |
| Red-Eye Reduction | Yes | Yes |
| Features | AF illuminator, flash +/- compensation, wireless off-camera control, flash exposure bracketing | AF illuminator, flash +/- compensation, wireless off-camera control |
| VIDEOGRAPHY / CAMCORDER | Sony Alpha SLT-A58K + DT 18-55mm | Pentax K-50 |
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| Digital Video Format | AVCHD, H.264 | H.264 |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG | JPEG, DNG (RAW) + JPEG, DNG (RAW) |
| Max Video Resolution | 1920 x 1080 | 1920 x 1080 |
| Surround Sound | Dolby Digital AC-3 (2 channel) recording | - |
| Microphone Operation Mode | Stereo | Mono |
| Microphone Features | - | Sensitivity control |
| MEMORY | Sony Alpha SLT-A58K + DT 18-55mm | Pentax K-50 |
|---|
| Memory Card Slot | Memory Stick PRO Duo card, SD card | SD card |
|---|---|---|
| Supported Memory Cards | SD Memory Card, Memory Stick PRO Duo, SDXC Memory Card, Memory Stick PRO-HG Duo HX, SDHC Memory Card, Memory Stick PRO-HG Duo | SD Memory Card, SDXC Memory Card, SDHC Memory Card |
| Included Memory Card | 8 GB SDHC | - |
| Image Storage | 5456 x 3632 3872 x 2576 2736 x 1824 |
RAW 4928 x 3264 JPEG 4928 x 3264 JPEG 4224 x 2816 JPEG 3456 x 2304 JPEG 2688 x 1792 |
| Video Capture | AVCHD - 1920 x 1080 - 50 fps - 24Mbps AVCHD - 1920 x 1080 - 50 fps - 17Mbps AVCHD - 1920 x 1080 - 25 fps - 24Mbps AVCHD - 1920 x 1080 - 25 fps - 17Mbps H.264 - 1440 x 1080 - 25 fps - 12Mbps |
H.264 - 1920 x 1080 - 30 fps H.264 - 1920 x 1080 - 25 fps H.264 - 1920 x 1080 - 24 fps H.264 - 1280 x 720 - 60 fps H.264 - 1280 x 720 - 50 fps H.264 - 1280 x 720 - 30 fps H.264 - 1280 x 720 - 25 fps H.264 - 1280 x 720 - 24 fps H.264 - 640 x 480 - 30 fps H.264 - 640 x 480 - 25 fps H.264 - 640 x 480 - 24 fps |
| BATTERY AND CHARGING | Sony Alpha SLT-A58K + DT 18-55mm | Pentax K-50 |
|---|
| Battery Type | Sony NP-FM500H Lithium Ion - manufacturer-specific | Pentax D-Li109 Lithium Ion |
|---|---|---|
| Details | 1 x Sony NP-FM500H Li-ion rechargeable battery - 1600 mAh (included) | Pentax D-Li109 Li-ion rechargeable battery (included) |
| Battery Life | Photo shooting - 690 shots (EVF on) Photo shooting - 700 shots (LCD Monitor on) |
Photo shooting - 480 shots (D-LI109 battery) Photo shooting - 1250 shots (lithium AA batteries) Playback - 4.5 hours (D-LI109 battery) Playback - 9.3 hours (lithium AA batteries) |
| CONNECTIONS | Sony Alpha SLT-A58K + DT 18-55mm | Pentax K-50 |
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| Interface | HDMI, USB 2.0 | Composite video/audio, USB 2.0 |
|---|---|---|
| Print Standard | DPOF support, Exif Print support, PRINT Image Matching | DPOF support, PRINT Image Matching |
| Flash Terminal | Hot shoe | Hot shoe |
| Connector Type | HDMI output USB 2.0 |
USB 2.0 Composite video/audio output |
| FEATURES | Sony Alpha SLT-A58K + DT 18-55mm | Pentax K-50 |
|---|
| Self-Timer Delay | 10 sec, 2sec | 2sec, 12sec |
|---|---|---|
| Continuous Shooting Speed | 8 frames per second | 3 frames per second, 6 frames per second |
| Additional Features | RGB primary colour filter, depth-of-field preview button, sharpness control, digital image rotation, camera orientation detection, histogram display, saturation control, Sweep Panorama technology, shadow point display, highlight point display, Dynamic Range Optimizer, built-in help guide, automatic display brightness adjustment, Multi-Frame Noise Reduction, Intelligent AUTO (iAUTO), AUTO+ (Advanced AUTO) mode, Superior Auto mode, noise reduction over long exposures, high ISO speed noise reduction, BRAVIA Sync function, Auto Object Framing, Translucent Mirror technology | RGB primary colour filter, digital image rotation, histogram display, cropping an image, resizing an image, Scene Detection Technology, interval shooting mode, Dynamic Range Adjustment, in-camera RAW processing, Chromatic Aberration Compensation (CAC), HDR image enhancement technology, Eye-Fi Card Ready, NR Slow Shutter, High ISO NR, Dual Axis Electronic Level, date stamp, Lens Distortion Correction |
| OTHERS | Sony Alpha SLT-A58K + DT 18-55mm | Pentax K-50 |
|---|
| Included Accessories | Battery charger, dust cap, body cap, lens cap, carrying case, shoulder strap, USB cable, DVD disc | Battery charger, body cap, shoulder strap, USB cable, eyecup, shoe cap |
|---|---|---|
| Software | Sony PlayMemories Home, Sony Image Data Converter 4.0 | Drivers & Utilities, SILKYPIX Developer Studio 3.0 |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | 0 °C | -10 °C |
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