Trying to decide on what capacity i need. 160gb or 80gb. how much storage does the a7s iii need ?

I would suggest getting the 160GB version. Actually, if you can, get two. You need these cards in particular for 4K@60 or 4K@120 video (or 8K@30 on the A1, which is equivalent to 4K@120 in terms of storage requirements) - you can use a regular UHS memory card for lower video settings. You can record about 30 minutes of 4K@60 video on a 160GB CFexpress Type A card. Other combos are pretty easy to do the math on based on that. For example, if you were shooting 4K@120 with a single 80GB card, you'd only be able to store about 7.5 minutes of video before running out of space. So if you populate both slots on the A7S3 with 160GB cards, you can record about an hour of 4K@60 video.

will this let me record in 4k 24fps on my FX3? Also can I record slow mo on the fx3 with this?

Hello, THank you for reaching out. Sony's commitment to customer satisfaction is our top priority. Yes this card will allow you to do both 4k 24fps and Slow Motion on you FX3. -Linda Sony Social Support

is it compatible with sony fx30?

Sony's commitment to customer satisfaction is our top priority. Yes, this memory card is compatible with the Sony ILMEFX30

I suppose this is designed towards video right? A mainly stills photographer won't need this expensive card?

If you use the Sony A1: this is the only card you should consider to get the best out of this sophisticated camera. If you want 30fps - you will need this card. They are better, robust and the right thing to do if you've spent the money, getting the A1.

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Sony CEA-G160T 160GB compact flash card CFexpress Type A Memory Card (CEAG160T)

Product ID: 340503166

Details

Brand
Sony
Compatible devices
ILCE7SIII
Flash memory type
CFexpress
Memory storage capacity
160 GB
Model name
Sony Cfexpress

⚡800MB/s read speed

🔥700MB/s write speed

🛡️IP57 water & dust protection

Description

🚀 Capture Fearlessly, Store Endlessly.

ALL WEATHER PROOF - IPX7 water and IP5X dust ingress protection ensure your memory card thrives in the harshest environments.
RUGGED RELIABILITY - Up to 5X drop impact resistance and 10X bending resistance means your data stays safe no matter where your shoots take you.
SMART DATA SECURITY - Supported by File Scan Utility and Memory Card File Rescue software to keep your valuable files intact and recoverable.
BLAZING FAST TRANSFERS - Experience ultra-responsive workflows with up to 800MB/s read and 700MB/s write speeds—never miss a moment.
ENGINEERED FOR ENDURANCE - New heat sink design keeps your card cool during intense 4K/120p recording sessions for uninterrupted creativity.

The Sony CEA-G160T is a cutting-edge 160GB CFexpress Type A memory card delivering blazing read speeds up to 800MB/s and write speeds up to 700MB/s. Designed with a new heat sink for superior heat dissipation, it supports extended 4K/120p recording. Built tough with IP57 water and dust resistance, plus enhanced drop and bend durability, it’s engineered for professionals demanding speed and reliability. Comes with advanced diagnostic and recovery software, backed by Sony’s lifetime warranty.

Specifications

ASIN	B08DRQ6KLL
Best Sellers Rank	97,135 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 104 in CompactFlash Cards
Brand	Sony
Brand Name	Sony
Colour	Black
Compatible Devices	ILCE7SIII
Compatible devices	ILCE7SIII
Customer Reviews	4.8 out of 5 stars 335 Reviews
Flash Memory Type	CFexpress
Flash memory type	CFexpress
Hardware Connectivity	CompactFlash
Item Dimensions D x W x H	20D x 28W x 3H millimetres
Item Dimensions L x W	28L x 20W millimetres
Item Type Name	Memory Card
Item Weight	0.01 Pounds
Manufacturer	Sony
Manufacturer Part Number	CEAG160T
Media Speed	800
Memory Storage Capacity	160 GB
Memory storage capacity	160 GB
Model Name	Sony Cfexpress A TOUGH card
Model Number	CEAG160T
Model name	Sony Cfexpress A TOUGH card
Product Features	High-Speed Performance; Made Incredibly TOUGH; Rapid-Response Photography
Product Warranty	Lifetime
Read Speed	800 Megabytes Per Second
Secure Digital Association Speed Class	Class 6
UPC	027242914537
Unit Count	1.0 count
Warranty Type	Limited

Reviews

M**I

Great!

Fast and professional!

6.04.2025

C**D

No hay falla con este modelo

Altamente confiable y de la mejor calidad posible, 10/10

5.01.2026

A**Y

Delivered on time as stated

Great card

15.01.2026

J**N

Ótimo

22.01.2026

R**K

Sony excellence

Using in my new fx3. Is great to be able to shoot all formats with just one card. A bit high in price but so is most pro gear, so definitely worth it.

24.05.2024

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