With aps-c lenses, does the video drop to 1080p automatically? it can't do 4k with those lenses i don't think. thanks.

When recording 4K movies, [ APSC Shooting] becomes disabled and locked to [Off]. This means if you use a ASPC lens the camera will not auto crop if you set the camera to record is 4K. If you want to avoid vignetting then you will set the record to 1080 and then set APSC option to auto.

Does the a7s iii have an e mount? can i swap the lens from the a7 iii to the a7s iii without having to use an adapter?

Yes the ILCE7SM3 is an E mount camera.

Can i mount zeiss sel24f18z into a7s3 ?

Of course you can, it is an E-mount lens :)

Does this camera have an IR cut-off filter?

Sony's commitment to customer satisfaction is our top priority. Yes it does. Amy (Sony Social Support)

Alpha A7s Iii Full Frame Mirrorless Camera Body Black

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Description

🚀 Elevate your vision with Sony Alpha 7S III — where speed meets cinematic brilliance.

ROCK SOLID STABILITY - 5-axis in-body image stabilization ensures blur-free photos and steady video, even on the move.
LIGHTNING FAST AUTOFOCUS - 759 phase-detection AF points deliver razor-sharp focus with near-instant tracking for every shot.
CINEMA GRADE VIDEO QUALITY - Record ultra-smooth 4K UHD at 120fps with 10-bit 4:2:2 color depth for professional-grade footage.
UNMATCHED LOW LIGHT MASTERY - Shoot clean, noise-free images up to ISO 409,600 and capture every detail with 15+ stops of dynamic range.
FUTURE PROOF PROCESSING POWER - Powered by the BIONZ XR engine, experience 8x faster processing for seamless 4K workflows and real-time performance.

The Sony Alpha 7S III is a professional full-frame mirrorless camera featuring a 12.1MP Exmor R BSI sensor optimized for ultra-low light, a powerful BIONZ XR processor delivering 8x faster performance, and advanced video capabilities including 4K 120p 10-bit 4:2:2 internal recording. With 759 phase-detection autofocus points, 5-axis in-body stabilization, and a dynamic ISO range up to 409,600, it’s engineered for creators demanding speed, precision, and cinematic quality.

Specifications

ASIN	B08DP4NKGN
Aperture modes	Manual, Aperture priority, Shutter-speed priority
Are Batteries Included	Yes
Aspect Ratio	16:9, 3:2, 4:3
Auto Focus Technology	Contrast Detection, Phase Detection
Autofocus	Yes
Autofocus Points	759
Best Sellers Rank	#57,906 in Electronics ( See Top 100 in Electronics ) #125 in Mirrorless Cameras
Bit Depth	14 Bit
Brand	Sony
Built-In Media	Camera Body & Accessories
Camera Flash	No Flash
Camera Lens	10
Color	Black
Compatible Devices	Smartphone
Compatible Flash Memory Type	CFexpress Type A, SDXC
Compatible Mountings	Sony E
Connectivity Technology	Wi-Fi
Continuous Shooting	10 FPS
Crop Mode	Full-Frame
Customer Reviews	4.8 4.8 out of 5 stars (327)
Digital-Still	Yes
Display Fixture Type	Articulating
Display Maximum Resolution	4240 x 2832
Display Resolution Maximum	4240 x 2832
Display Type	LCD
Dots Per Screen	1,440,000 Dots
Effective Still Resolution	12.1
Expanded ISO Minimum	40
Exposure Control	Manual
File Format	HEIF, JPEG, Raw
Flash Memory Bus Interface Type	PCIe
Flash Memory Speed Class	70
Flash Memory Type	Dual Slot: CFexpress Type A / SD (UHS-II)
Flash Memory UHS Speed Class	UHS Speed Class 3 (U3)
Flash Memory Video Speed Class	300
Flash Modes	Auto, Fill Flash, Hi-Speed Sync, Off, Rear Sync, Red-Eye Reduction, Slow Sync
Flash Sync Speed	1/250 Second
Focal Length Description	12 to 24mm
Focus Features	Continuous-Servo AF (C), Direct Manual Focus (DMF), Manual Focus (M), Single-Servo AF (S)
Focus Mode	Continuous-Servo AF (AF-C), Direct Manual Focus (DMF), Manual Focus (MF), Single-Servo AF (AF-S)
Focus Type	manual-and-auto
Form Factor	Mirrorless
Generation	III
Global Trade Identification Number	00027242920569
HDMI Type	Type A Standard HDMI
Hardware Interface	USB Type C
Has Color Screen	Yes
Image Capture Type	Stills & Video
Image stabilization	Sensor-shift
Item Weight	612 Grams
JPEG Quality Level	Fine
Lens Type	Zoom
Manufacturer	Sony
Manufacturer Part Number	ILCE7SM3/BQ
Maximum Aperture	4 Millimeters
Maximum Focal Length	24 Millimeters
Maximum Image Size	3464 Pixels
Maximum Shutter Speed	1/8000 Seconds
Memory Slots Available	2
Metering Methods	Average, Center-Weighted Average, Highlight Weighted, Multiple, Spot
Minimum Focal Length	28 Centimeters
Minimum Shutter Speed	1/8000 Seconds
Model Name	ILCE7SM3/B
Model Number	ILCE7SM3/B
Model Series	a7S III
Movie Mode	Yes
Night vision	No
Number of Diaphragm Blades	9
Optical Zoom	1
Photo Sensor Resolution	12 MP
Photo Sensor Size	Full Frame (35mm)
Real Angle Of View	0.53 Radians
Recording Capacity	24 Minutes
Remote Included	No
Screen Size	3 Inches
Self Timer	10 Seconds, 2 Seconds, 5 Seconds
Sensor Type	CMOS
Series Number	7
Shooting Modes	Auto, Manual, Programmed AE, Aperture priority, Shutter-speed priority, Slow /amp; Quick Motion
Skill Level	Professional
Special Feature	BIONZ XR Image Processor; 759-Point Fast Hybrid AF; 5-Axis SteadyShot INSIDE Image Stabilization
Specific Uses For Product	Photography, Videography
Supported Image Format	JPEG, RAW
Total Still Resolution	12.1 MP
Total USB 2.0 Ports	1
Total USB Ports	1
UPC	027242920569
Unit Count	1.0 Count
Video Output	HDMI
Video Resolution	4K UHD 2160p
Viewfinder	Electronic
Viewfinder Magnification	0.9x
Warranty Description	1-year limited manufacturer’s
White Balance Settings	Auto, Cloudy, Color Temperature, Custom, Daylight, Fluorescent, Incandescent, Shade, Underwater
Wireless Technology	Bluetooth, Wi-Fi
Write Speed	Up to 10 fps
Zoom	Optical Zoom

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Alpha a7S III Full-Frame Mirrorless Camera Body Black

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