Pentax K-3 III vs Sony Alpha ILCE-A1 Comparison



Let’s compare the Pentax K-3 III vs Sony Alpha ILCE-A1.

Our comparison table below covers all the important specifications of each camera. In this side-by-side review, we will be comparing Pentax K-3 III and Sony Alpha ILCE-A1. While Pentax K-3 III has APS-C sensor, Sony Alpha ILCE-A1 has 35mm sensor and 25.7 has a 25.7 MP and Sony Alpha ILCE-A1 has a 50.1 MP resolution.

  Pentax K-3 III Sony Alpha ILCE-A1
  Pentax K-3 III Front Sony Alpha ILCE-A1 Front
Sensor and Camera Features
Brand Ricoh Sony
Megapixels 25.7 50.1
Sensor Type CMOS CMOS
Sensor Format APS-C 35mm
SLR Type Dslr Mirrorless
Crop Factor 1.5x 1.0x
AA Filter Optional Fixed
Image Resolution 6192 x 4128 (25.6 MP, 3:2) 8640 x 5760 (49.8 MP, 3:2)
Body Image Stabilization Yes Yes
Native ISO Min 100 - Max 160000 Min 100 - Max 32000
Full ISO Settings Auto, 100-160000 (1, 1/2 or 1/3 EV steps) AUTO, ISO 100 - 32000, expandable to ISO 50 - 102400
Startup Time
AF System and Shooting
Auto Focus Type SAFOX 13 TTL phase-matching - 101 point (25 cross type focus points in the center) Fast Hybrid 4D AF: 759 points (PDAF), 425 points (contrast-detection AF); Wide (759 points (PDAF), 425 points (CDAF))/Zone/Center/Flexible Spot (S/M/L)/Expanded Flexible Spot/Tracking (Wide/Zone/Center/Flexible Spot (S/M/L)/Expanded Flexible Spot); Touch AF
Continuous Shooting Speed / Burst Mode Auto, 100-160000 (1, 1/2 or 1/3 EV steps) AUTO, ISO 100 - 32000, expandable to ISO 50 - 102400
Shutter Speed Range 1/8000 - 30 sec 1/32000 - 30 sec
Bulb Mode Yes Yes
JPEG Buffer Size 30 165
AW Buffer Size 155
Screen/viewfinder
LCD 3.2 3.0
LCD Resolution 1,620,000 dots (540,000 px) 1,440,000 dots (360,000 px)
Touchscreen Yes Yes
Articulating Screen No Yes
Tilt Swivel Screen No No
Selfie Screen No No
Top Deck Display Yes No
Focus Peaking Yes Yes
Viewfinder Optical / LCD EVF / LCD
Viewfinder Type SLR type; eye-level pentaprism, ~100% coverage, 1.05x mag., 20.5mm eyepoint, -4.0 to +1.0 diopter EVF: 0.64" 9.44M-dot QXGA color OLED, 100% coverage, 0.90x magnification, 60/120/240fps refresh rates, -4.0 to +3.0 diopter, 25mm eyepoint from the eyepiece lens
Focus Peaking Yes Yes
Video Features
Video Resolution 3840x2160 (30p/​24p) 7680x4320 (30p/​25p/​24p)
Video File Format MPEG-4 AVC/H.264 (MOV) XAVC S (Long GOP, H.264 MP4); XAVC HS (Long GOP, H.265 HEVC); XAVC S-I (All-Intra, H.264 MP4)
Memory Card Type SD / SDHC / SDXC SD / SDHC / SDXC / CFexpress
Dual Card Slot Yes Yes
SD UHS Support 2x CFexpress Type A+SD UHS-II
Microphone Jack Yes Yes
Headphone Jack Yes Yes
Flash and Internal Connections
Built-in Flash No No
Max Flash Sync Speed 1/200 1/400s (1/500s APS-C crop mode)
Internal connections USB 3.2 Gen1 (Type-C), Micro B,Micro (Type D) HMDI, External cable switch terminal (2.5mm), X-sync socket, 3.5mm stereo mic input, 3.5mm headphone jack USB-C (USB 3.2 10Gbps), Type-D Micro HDMI, 1000Base-T Ethernet, 3.5mm Microphone and Headphone Jacks, Sync Terminal
Connectivity
Built-In Wi-Fi Yes Yes
NFC No Yes
Bluetooth Yes Yes
Built-In GPS Yes No
USB Type USB 3.0 Super Speed,Bluetooth,WiFi USB 2.0 High Speed,USB 3.0 Super Speed,Ethernet,Bluetooth,WiFi
Physical
Battery Life (CIPA) 800 shots 430 shots
Battery Types Lithium-ion rechargeable NP-FZ100 Lithium-ion rechargeable
Weight 28.9 oz (820 g) includes batteries 26.0 oz (737 g) includes batteries
Size 5.3 x 4.1 x 2.9 in. (135 x 104 x 74 mm) 5.1 x 3.8 x 3.2 in. (129 x 97 x 81 mm)
Price
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Release Date 2021-04-06 2021-03-01