Sony A1 issue at low temperatures

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Cargo
Cargo Regular Member • Posts: 171
Sony A1 issue at low temperatures

I discovered that my Sony A1 begins to have problems recording shots from the buffer to the CFExpress memory cards at low temperatures (-10C and below). Here are my stats for the last week:

January 1, 2024: -12°C, 2 Sony CFexpress Type A 320GB R800/W700MB/s cards (CEA-G320T) in two slots, Uncompressed RAW recording format - after 40 minutes it is impossible to record from the buffer to the card. It was cured by turning the camera off and on, frames from the buffer were lost.

January 2, 2024 -18°C, 2 Sony CFexpress Type A 320GB R800/W700MB/s cards (CEA-G320T) in two slots, Uncompressed RAW recording format - after 30 minutes it is impossible to record from the buffer to the card. But I didn’t turn off the camera; I switched the card on the go. The camera said that it was starting recovery, but then it switched off. Further glitches were completely wild. Both card symbols were completely flashing yellow minuses. The screen turned on without any icons at all, the camera did not react to anything, then refused to turn off, then refuse to turn on. After warming up, everything is normal, frames from the buffer are lost.

January 3, 2024 -22°C, 1 Sony CFexpress Type A 320GB R800/W700MB/s card (CEA-G320T) in the first slot, Uncompressed RAW recording format - after 50 minutes it is impossible to record from the buffer to the card. After warming up, everything is normal, frames from the buffer are lost.

January 5, 2024 -20°C, 1 Sony CFexpress Type A 320GB R800/W700MB/s card (CEA-G320T) in the first slot, Loseless RAW L recording format - after 55 minutes it is impossible to write from the buffer to the card, looped messages when trying to Recovery , pulled out the card so as not to lose the footage, pulled out the battery. After warming up, everything is normal, frames from the buffer are lost.

January 6, 2024 -16°C, 1 Sony CFexpress Type A 320GB R800/W700MB/s card (CEA-G320T) in the second slot, Uncompressed RAW recording format - after 45 minutes it is impossible to record from the buffer to the card. After warming up the camera handle with my bare hand, after some time it was able to record frames from the buffer onto the card, and after that I even filmed mice for about 10 minutes. I ended my walk by turning off the camera as usual. All frames are intact.

January 7, 2024 -23°C, 1 Sony Tough SD 128 Gb V90 card (300/299 MB/s) in the second slot, Uncompressed RAW recording format. The camera worked for 60 minutes, everything was fine, the card was filled to capacity, all the frames were intact - SUCCESS.

So, I decided to use only SD cards at low temperatures.

Have you encountered problems with the A1 operating at low temperatures (more than hours at -20 degrees Celsius)?

P.S. Some shots of this week:

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Sony A1 + 200-600;

Panasonic S1 + S Pro 24-70/2.8 + Sigma 105/1.4 + Sigma 105/2.8 Macro

 Cargo's gear list:Cargo's gear list
Panasonic S1 Sony a1 Sigma 105mm F1.4 (L-mount) Sony FE 200-600 F5.6-6.3 Panasonic Lumix S Pro 24-70mm F2.8 +1 more
Sony a1
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