Comparison of the Pentax KF and the Sony Alpha a6400
Pentax KF
64 points
Sony Alpha a6400
76 points
Pentax KF
93 mm
126 mm
BODY
Sony Alpha a6400
67 mm
120 mm
2022
YEARYear of announcement
2019
Magnesium alloy
BODY MATERIAL
Magnesium alloy
Weather
sealed
sealed
WEATHER SEALING
Weather
sealed
sealed
Pentax KAF2
LENS MOUNT
Sony E
n/a
SHUTTER LIFEThe shutter durability as rated by the manufacturer.
200 000 cycles
684 g
1.51 lb
1.51 lb
126 x 93 x 74 mm
5 x 3.7 x 2.9 in.
5 x 3.7 x 2.9 in.
DIMENSIONS
& WEIGHTLength x Height x Width and the Weight incl. batteries and memory card
& 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
& WEIGHTLength x Height x Width and the Weight incl. batteries and memory card
120 x 67 x 60 mm
4.7 x 2.6 x 2.4 in.
4.7 x 2.6 x 2.4 in.
403 g
0.89 lb
0.89 lb
Pentax KF
Sony Alpha a6400
24.2 MP
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
Sony Exmor 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
Adjustable low-pass filter simulator
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.
Fixed
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.
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
Not tested
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.
83
Not tested
DYNAMIC RANGEThe maximum dynamic range performance (DXOMARK Landscape Score) in exposure value (EV)
13.6
Not tested
LOW-LIGHT ISOThe low-light sensitivity performance (DXOMARK Sports Score) in ISO sensitivity value
1431
Pentax KF
Sony Alpha a6400
COVERAGE:
100 %
100 %
REAL SIZE:
0.63
0.63
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 %
100 %
REAL SIZE:
0.70
0.70
Optical (pentaprism)
VF TYPE
Electronic (2 359 296 dot OLED)
Articulated
1 036 800 dot LCD
1 036 800 dot LCD
REAR SCREEN
Articulated
921 600 dot LCD
921 600 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
Pentax KF
Sony Alpha a6400
Phase detection, Contrast detection in Live View mode
AUTOFOCUS SYSTEM
AF SYSTEM
Hybrid detection
SAFOX X
AUTOFOCUS MODULE
AF MODULE
Fast Hybrid AF
11
11
FOCUS POINTSAutofocus points
as shown in the figures below:
° linear sensors
° cross-type sensors
° dual cross-type sensors
contrast autofocus areas
as shown in the figures below:
° linear sensors
° cross-type sensors
° dual cross-type sensors
contrast autofocus areas
425 (phase)
425 (contrast)
425
(phase) 425
(contrast)9
CROSS-TYPE FOCUS POINTS
CROSS-TYPE FP
0
-3
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.-2
12 %
AF COVERAGEFrame coverage by AF sensors in percent.
81 %
Yes
IN-BODY
AF MOTORAn in-body AF motor gives the ability to auto-focus with older lenses which don't have their own motors.
AF MOTORAn in-body AF motor gives the ability to auto-focus with older lenses which don't have their own motors.
None
Sensor shift
IN-BODY IMAGE STABILIZATION
IMAGE STABILIZ.
No
Pentax KF
Sony Alpha a6400
PRIME M II
IMAGE
PROCESSOR
PROCESSOR
BIONZ X
14 bit RAW, JPEG
OUTPUT FORMATS
14 bit RAW, JPEG
Auto, 100 - 102400
ISO SENSITIVITY
Auto, 100 - 32000
(can be extended to ISO 102400)
(can be extended to ISO 102400)
6
fps
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.
11
fps
fps
40 JPEG shots
10 RAW shots
10 RAW shots
MAX. BURSTMaximum number of shots in high-speed continuous drive mode until the buffer is full.
99 JPEG shots
46 RAW shots
46 RAW shots
1080p @ 30 fps (Full HD)
MAX. VIDEO RESOLUTION
VIDEO
2160p @ 30 fps (4K)
-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 → 1/6000 sec
30 sec → 1/6000 sec
SHUTTER SPEED Maximum and minimum possible exposure time in seconds.
Bulb,
30 sec → 1/4000 sec
30 sec → 1/4000 sec
Pentax KF
Sony Alpha a6400
X-SYNC:
1/180
GUIDE
NUMBER:
NUMBER:
GN:
12
BUILT-IN FLASH
GUIDE
NUMBER:
NUMBER:
GN:
6
X-SYNC:
1/160
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
DEVICES
SD, SDHC, SDXC (UHS-I compatible)
STORAGE TYPES
SD, SDHC, SDXC (UHS-I compatible), Sony Memory Sticks
1
CARD SLOTS
1
400
shots
shots
BATTERY LIFEMaximum number of images that can be shot per single battery charge (according to CIPA).
360
shots
shots