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 CFexpress Type A 160GB CFexpress Type A Card CEAG160T | 800MBps Read

Sony CFexpress Type A 160GB CFexpress Type A Card CEAG160T | 800MBps Read

Product ID: 217377442

Details

Brand
Sony
Compatible Devices
ILCE7SIII
Flash Memory Type
CFexpress
Memory Storage Capacity
160 GB
Model Name
Sony Cfexpress

⚡800MB/s read speed

🔥Advanced heat sink for 4K/120p recording

🛡️IP57 water & dust resistant

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Description

⚡ Capture. Create. Conquer. The ultimate speed and toughness for pros on the move.

RUGGED RELIABILITY - Up to 5X more drop impact resistance and 10X bending resistance—engineered for the hustle of professional life.
SMART DATA PROTECTION - Supported by File Scan Utility and Memory Card File Rescue software to keep your memories secure and recoverable.
BLAZING FAST TRANSFERS - Experience ultra-responsive workflows with up to 800MB/s read and 700MB/s write speeds—never miss a moment.
STAY COOL UNDER PRESSURE - Innovative heat sink design ensures sustained performance during intense 4K/120p shoots without overheating.
BUILT TO BRAVE THE ELEMENTS - IPX7 water and IP5X dust resistance means your data stays safe, rain or shine, on every adventure.

The Sony CFexpress Type A 160GB card delivers industry-leading speeds up to 800MB/s read and 700MB/s write, combined with a cutting-edge heat sink for extended 4K/120p recording. Engineered for durability with IP57 water and dust resistance plus enhanced drop and bend protection, it’s the go-to memory card for professional creators demanding speed, reliability, and peace of mind.

Specifications

ASIN	B08DRQ6KLL
Additional Features	High-Speed Performance; Made Incredibly TOUGH; Rapid-Response Photography
Best Sellers Rank	#71 in CompactFlash Memory Cards
Brand	Sony
Color	Black
Compatible Devices	ILCE7SIII
Customer Reviews	4.8 4.8 out of 5 stars (358)
Flash Memory Type	CFexpress
Hardware Connectivity	CompactFlash
Item Dimensions D x W x H	0.79"D x 1.1"W x 0.11"H
Item Dimensions L x W	1.1"L x 0.79"W
Item Type Name	Memory Card
Item Weight	4.54 g
Manufacturer	Sony
Media Speed	800
Memory Storage Capacity	160 GB
Mfr Part Number	CEAG160T
Model Name	Sony Cfexpress A TOUGH card
Model Number	CEAG160T
Read Speed	800 megabytes_per_second
UPC	027242914537
Warranty Description	5 year manufacturer
Warranty Type	Limited

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$1160.47

Duties & taxes included

In stock

Sold byAmazon EcuadorDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Ecuador.

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