Pentax K-3 III vs Canon EOS R3 Comparison



Let’s compare the Pentax K-3 III vs Canon EOS R3.

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 Canon EOS R3. While Pentax K-3 III has APS-C sensor, Canon EOS R3 has 35mm sensor and 25.7 has a 25.7 MP and Canon EOS R3 has a 24.1 MP resolution.

  Pentax K-3 III Canon EOS R3
  Pentax K-3 III Front Canon EOS R3 Front
Sensor and Camera Features
Brand Ricoh Canon
Megapixels 25.7 24.1
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) 6000 x 4000 (24.0 MP, 3:2)
Body Image Stabilization Yes Yes
Native ISO Min 100 - Max 160000 Min 100 - Max 102400
Full ISO Settings Auto, 100-160000 (1, 1/2 or 1/3 EV steps) Auto, 100-102400 in 1/3 or 1 EV steps, expandable to 50 (L), 204800 (H1)
Startup Time
AF System and Shooting
Auto Focus Type SAFOX 13 TTL phase-matching - 101 point (25 cross type focus points in the center) Phase Detection AF: Dual Pixel CMOS AF II; 1053 AF zones; Face+Tracking AF (with face/eye/head/body detection, animal detection, vehicle detection), 1-point AF ([AF frame size] can be set to [Small]), Expand AF Area (Above, below, left and right/Around); Zone AF Large Zone AF (Vertical/Horizontal)
Continuous Shooting Speed / Burst Mode Auto, 100-160000 (1, 1/2 or 1/3 EV steps) Auto, 100-102400 in 1/3 or 1 EV steps, expandable to 50 (L), 204800 (H1)
Shutter Speed Range 1/8000 - 30 sec 1/8000 - 30 sec
Bulb Mode Yes Yes
JPEG Buffer Size 30 150
AW Buffer Size
Screen/viewfinder
LCD 3.2 3.2
LCD Resolution 1,620,000 dots (540,000 px) 4,150,000 dots
Touchscreen Yes Yes
Articulating Screen No Yes
Tilt Swivel Screen No Yes
Selfie Screen No Yes
Top Deck Display Yes Yes
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; 0.5-inch OLED, 5.76 million dots, 120fps refresh rate, 100% coverage, 0.76x magnification, 23mm eyepoint, -4 to +2 diopter, eye sensor
Focus Peaking Yes Yes
Video Features
Video Resolution 3840x2160 (30p/​24p) 6000x3164 (60p/​50p/​30p/​24p/​23.98p)
Video File Format MPEG-4 AVC/H.264 (MOV) Video: RAW (CRM); H.265/HEVC; MPEG4 AVC/H.264 Variable (averaged) bit rate; Audio: ALL-I/IPB: Linear PCM/AAC
Memory Card Type SD / SDHC / SDXC SD / SDHC / SDXC / CFexpress
Dual Card Slot Yes Yes
SD UHS Support CFexpress
Microphone Jack Yes Yes
Headphone Jack Yes Yes
Flash and Internal Connections
Built-in Flash No No
Max Flash Sync Speed 1/200 1/250s
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 Micro HDMI (Type D), USB-C SuperSpeed USB (USB 3.1 Gen 2), 3.5mm stereo microphone and headphone jacks, remote jack, RJ-45 Ethernet
Connectivity
Built-In Wi-Fi Yes Yes
NFC No No
Bluetooth Yes Yes
Built-In GPS Yes No
USB Type USB 3.0 Super Speed,Bluetooth,WiFi USB 3.0 Super Speed,Ethernet,Bluetooth,WiFi
Physical
Battery Life (CIPA) 800 shots 440 shots
Battery Types Lithium-ion rechargeable LP-E4N compatible
Weight 28.9 oz (820 g) includes batteries 35.8 oz (1,015 g) includes batteries
Size 5.3 x 4.1 x 2.9 in. (135 x 104 x 74 mm) 5.9 x 5.6 x 3.4 in. (150 x 143 x 87 mm)
Price
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Release Date 2021-04-06 2021-11-01