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CFexpress card for Sony A9III

  
 
dclark
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p.2 #1 · CFexpress card for Sony A9III


tsdevine wrote:
dclark wrote:
MMP wrote:
..... Sony requires a slightly more strict set of criteria to be fully compatible with their cameras. This is precisely why Sony lists specific recommended cards as opposed to simply stating "Any VPG200 card"....

[/quote}

Where do you find the that "Sony requires a slightly more strict set of criteria"?
The ILCE-1M2 User Manal does not provide a list of recommended cards.

tsdevine wrote:
Probably wouldn't hurt to look at this list as well, not saying it's a guarantee....but if a card isn't on this list, probably should warrant a little more scrutiny.

https://compactflash.org/list-of-vpg-certified-cards/


Both the Pergear Master and Pergear Prime are on the list.


Okay....so there have been brands in the past, who did not get their cards certified, but had the logo. All I was suggesting, when buying cards, to at least make sure they are on that list.

I wasn't specifically talking about the Peargear and others. Just as a general reference.

My apologies for suggesting that any card you buy, you might want to
...Show more

Checking the official list is good advice, but in this case Pergear seems to be on the list, unless the card @duncangr has is not the Master or Prime, although he stated it was a 256GB VG200 card.
Pergear has the "Standard" line which does not claim to be VPG200 qualified, and it does not have the logo.



Sep 22, 2025 at 05:46 PM
MMP
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p.2 #2 · CFexpress card for Sony A9III


dclark wrote:
MMP wrote:
..... Sony requires a slightly more strict set of criteria to be fully compatible with their cameras. This is precisely why Sony lists specific recommended cards as opposed to simply stating "Any VPG200 card"....

[/quote}

Where do you find the that "Sony requires a slightly more strict set of criteria"?
The ILCE-1M2 User Manal does not provide a list of recommended cards.



You are 100% correct that Sony actually doesn't list specific cards (I was thinking of Canon).

Regarding the VPG criteria, you aren't going to find anything from Sony or the card manufacturers acknowledging the matter, but it shows up in real-world practice. I'm not sure if you want look at is as Sony criteria slightly higher than VPG200 standard, or if it makes more sense to think of it as Sony more strictly enforces the VPG200 standard. The latter is probably more correct. These cameras are very sensitive to fluctuations or even slight drops in write speed, which prompts the card warning messages. Some cards are simply more reliable/consistent in maintaining the write speeds despite their VPG200 designation.



Sep 22, 2025 at 07:23 PM
duncangr
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p.2 #3 · CFexpress card for Sony A9III


My bad, on closer inspection my Pergear card does not have the VPG200 logo on it.

PERGEAR Professional 260GB CFexpress Type A Memory Card, Up to 880MB/s Read Speed & 900MB/s Write Speed for 4K 120P,8K 30P Recording. The label on the card says 400MB/s write speed.



Sep 22, 2025 at 11:31 PM
 


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dclark
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p.2 #4 · CFexpress card for Sony A9III


duncangr wrote:
My bad, on closer inspection my Pergear card does not have the VPG200 logo on it.

PERGEAR Professional 260GB CFexpress Type A Memory Card, Up to 880MB/s Read Speed & 900MB/s Write Speed for 4K 120P,8K 30P Recording. The label on the card says 400MB/s write speed.


Thanks for clarifying that.
It's interesting that the camera can read card data to determine whether it is a certified VPG200 card, and the camera will not try to use a card that does not meet the required spec. I assumed the camera would have no way to know the certification level of the card, would try to write the video, and would eventually fail.



Sep 23, 2025 at 12:31 AM
EB-1
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p.2 #5 · CFexpress card for Sony A9III


dclark wrote:
Thanks for clarifying that.
It's interesting that the camera can read card data to determine whether it is a certified VPG200 card, and the camera will not try to use a card that does not meet the required spec. I assumed the camera would have no way to know the certification level of the card, would try to write the video, and would eventually fail.


The VPG level is a flag in the firmware of the card. Of course a company can cheat, but the legit ones don't want to lose their certification. https://compactflash.org/video-performance-guarantee-vpg/

EBH



Sep 23, 2025 at 01:07 AM
duncangr
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p.2 #6 · CFexpress card for Sony A9III


dclark wrote:
Thanks for clarifying that.
It's interesting that the camera can read card data to determine whether it is a certified VPG200 card, and the camera will not try to use a card that does not meet the required spec. I assumed the camera would have no way to know the certification level of the card, would try to write the video, and would eventually fail.


No, when I switch to 8k video mode the message pops up immediately, before trying to record anything.



Sep 23, 2025 at 01:57 AM
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