Sony Alpha a6400 vs. Pentax KF - Camera Comparison

Comparison of the Sony Alpha a6400 and the Pentax KF

Sony Alpha a6400
76 points
Pentax KF
64 points
Sony Alpha a6400
Sony Alpha a6400 ✭ Camspex.com
67 mm
120 mm
BODY
Pentax KF
Pentax KF ✭ Camspex.com
93 mm
126 mm
2019
YEARYear of announcement
2022
Magnesium alloy
BODY MATERIAL
Magnesium alloy
Weather
sealed
WEATHER SEALING
Weather
sealed
Sony E
LENS MOUNT
Pentax KAF2
200 000 cycles
SHUTTER LIFEThe shutter durability as rated by the manufacturer.
n/a
403 g
0.89 lb
120 x 67 x 60 mm
4.7 x 2.6 x 2.4 in.
DIMENSIONS
& WEIGHTLength x Height x Width and the Weight incl. batteries and memory card
DIMENS.
& WEIGHTLength x Height x Width and the Weight incl. batteries and memory card
126 x 93 x 74 mm
5 x 3.7 x 2.9 in.
684 g
1.51 lb
Sony Alpha a6400
Pentax KF
24.2 MP
Sony Exmor CMOS APS-C Sensor
SENSOR The number of effective megapixels (MP). Sensor manufacturer (if known) and sensor type.
SENSOR Sensor manufacturer (if known) and sensor type.
24.2 MP
CMOS APS-C Sensor
24.2 MP
EFFECTIVE MEGAPIX The number of effective megapixels (MP).
24.2 MP
23.5 x 15.6 mm
SENSOR SIZE
23.5 x 15.6 mm
6000 x 4000 pixels
MAX. RESOLUTIONMaximum still image resolution
MAX. RESOLUT.Maximum still image resolution
6000 x 4000 pixels
1.5x
CROP FACTORA 50mm lens on a camera with a crop factor of 1.5x would behave like a 75mm lens on a full-frame camera with a crop factor of 1x (50mm x 1.5 = 75mm)
1.5x
Bayer array
COLOR FILTER
Bayer array
3.9 μm
PIXEL PITCHThe center-to-center distance between two pixels (photosites) on a sensor. The larger the photosites, the more light they can capture and the lower is the level of visible "noise" in captured images.
3.9 μm
Fixed
LOW-PASS FILTERA low-pass filter blurs fine details of an image to eliminate the moiré and the color artifacts of finely patterned structures. Without a low-pass filter images will appear sharper, but there is also a risk of moiré occurring in certain scenes.
Adjustable low-pass filter simulator
3:2
NATIVE
ASPECT RATIOThe width to height ratio of the "straight out of the camera" images. However, most modern digital cameras are capable of producing images in various aspect ratios.
ASPECT RATIOThe width to height ratio of the "straight out of the camera" images. However, most modern digital cameras are capable of producing images in various aspect ratios.
3:2
Sony Alpha a6400
DXOMARK
SENSOR
SCOREAnalysis of the camera image quality by dxomark.com
Pentax KF
83
OVERALL SCOREDXOMARK Sensor Overall Score shows a camera's sensor quality in terms of noise, ability to render high contrast, formation of colored noise, ability to shoot in low light.
Not tested
 
24
COLOR DEPTHThe color depth performance (DXOMARK Portrait Score) in bits
Not tested
 
13.6
DYNAMIC RANGEThe maximum dynamic range performance (DXOMARK Landscape Score) in exposure value (EV)
Not tested
 
1431
LOW-LIGHT ISOThe low-light sensitivity performance (DXOMARK Sports Score) in ISO sensitivity value
Not tested
 
Sony Alpha a6400
Pentax KF
COVERAGE:
100 %
REAL SIZE:
0.70
VIEW­FINDERThe viewfinder frame COVERAGE in percent and the real viewfinder SIZE (VF magnification corrected by the crop factor of a camera — this way cameras with different sensor sizes can be compared).
COVERAGE:
100 %
REAL SIZE:
0.63
Electronic (2 359 296 dot OLED)
VF TYPE
Optical (pentaprism)
Articulated
 921 600 dot LCD
REAR SCREEN
Articulated 
1 036 800 dot LCD
3 inch
SCREEN SIZE
3 inch
LIVE VIEW & TOUCH SCREEN
No top LCD panel
TOP LCD PANELLCD panel on top of the camera which provides information about the current camera settings.
No top LCD panel
Sony Alpha a6400
Pentax KF
Hybrid detection
AUTOFOCUS SYSTEM
AF SYSTEM
Phase detection, Contrast detection in Live View mode
Fast Hybrid AF
AUTOFOCUS MODULE
AF MODULE
SAFOX X
425 (phase)  
425 (contrast)
425
 (phase)  
425
 (contrast)
FOCUS POINTSAutofocus points
as shown in the figures below:

° linear sensors
° cross-type sensors
° dual cross-type sensors
contrast autofocus areas
11
11
0
CROSS-TYPE FOCUS POINTS
CROSS-TYPE FP
9
camspex.com — Autofocus system — Sony Alpha a6400
-2
EV

100

The minimum exposure value of the AF working range (at 23°C and ISO 100). The smaller this value, the less light is needed for normal autofocus operation.
-3
camspex.com — Autofocus system — Pentax KF
81 %
AF COVERAGEFrame coverage by AF sensors in percent.
12 %
None
IN-BODY
AF MOTORAn in-body AF motor gives the ability to auto-focus with older lenses which don't have their own motors.
Yes
No
IN-BODY IMAGE STABILIZATION
IMAGE STABILIZ.
Sensor shift
Sony Alpha a6400
Pentax KF
BIONZ X
IMAGE
PROCESSOR
PRIME M II
14 bit RAW, JPEG
OUTPUT FORMATS
14 bit RAW, JPEG
Auto, 100 - 32000
(can be extended to ISO 102400)
ISO SEN­SITIVITY
Auto, 100 - 102400
11
fps
CONTINUOUS DRIVEMaximum frames per second (fps) in continuous drive mode when using the mechanical shutter.
CONT. DRIVEMaximum frames per second (fps) in continuous drive mode when using the mechanical shutter.
6
fps
99 JPEG shots
46 RAW shots
MAX. BURSTMaximum number of shots in high-speed continuous drive mode until the buffer is full.
40 JPEG shots
10 RAW shots
2160p @ 30 fps (4K)
MAX. VIDEO RESOLUTION
VIDEO
1080p @ 30 fps (Full HD)
-5/+5 EV  (in 1/3 or 1/2 EV steps)
EXPOSURE COMPENSATION
EXPOSURE COMPENS.
-5/+5 EV  (in 1/3 or 1/2 EV steps)
Bulb,
 
30 sec → 1/4000 sec
SHUTTER SPEED Maximum and minimum possible exposure time in seconds.
Bulb, 
30 sec → 1/6000 sec
Sony Alpha a6400
Pentax KF

X-SYNC:
1/160
GUIDE
NUMBER:

GN:
6
BUILT-IN FLASH
GUIDE
NUMBER:

GN:
12

X-SYNC:
1/180
Yes
HOT SHOE
Yes
USB 2.0 (480 Mbit/sec)
USB
USB 2.0 (480 Mbit/sec)
Microphone port, HDMI
CONNECTIONS
CONNECT.
Microphone port, HDMI
BUILT-IN
DEVICES
SD, SDHC, SDXC (UHS-I compatible), Sony Memory Sticks
STORAGE TYPES
SD, SDHC, SDXC (UHS-I compatible)
1
CARD SLOTS
1
360
shots
BATTERY LIFEMaximum number of images that can be shot per single battery charge (according to CIPA).
400
shots

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