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Sony A1ii - delay in auto switching between LCD screen and viewfinder

  
 
MMP
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p.1 #1 · Sony A1ii - delay in auto switching between LCD screen and viewfinder


Just picked up this camera a few days ago and noticed that when putting my eye up to the viewfinder there is a rather long delay, maybe 3-4seconds, before the viewfinder switches on. The LCD screen turns off instantly, but the viewfinder is lagging behind. This only seems to happen about 50% of the time, but it has already cost me a few shots this past weekend at a soccer tournament.

I'm using firmware v3.00, which I believe is the most recent. Wondering if anyone else is running into this issue as well.



Sep 22, 2025 at 10:55 AM
GregS
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p.1 #2 · Sony A1ii - delay in auto switching between LCD screen and viewfinder


Maybe try taking a swab dipped in isopropyl alcohol and cleaning the sensor under the EVF. I had this issue on an A7R4 and cleaning the little sensor thingy fixed it. I'm guessing some skin oils were causing the issue.


Sep 22, 2025 at 12:25 PM
MMP
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p.1 #3 · Sony A1ii - delay in auto switching between LCD screen and viewfinder


GregS wrote:
Maybe try taking a swab dipped in isopropyl alcohol and cleaning the sensor under the EVF. I had this issue on an A7R4 and cleaning the little sensor thingy fixed it. I'm guessing some skin oils were causing the issue.


That actually did cross my mind briefly, but I dismissed it because I assumed it would be a single sensor that turns off the LCD screen and turns on the viewfinder...and the LCD screen turns on/off appropriately. It's easy enough to clean, so I'll give a shot anyways.



Sep 22, 2025 at 12:29 PM
 


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old-gregg
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p.1 #4 · Sony A1ii - delay in auto switching between LCD screen and viewfinder


GregS wrote:
Maybe try taking a swab dipped in isopropyl alcohol and cleaning the sensor under the EVF. I had this issue on an A7R4 and cleaning the little sensor thingy fixed it. I'm guessing some skin oils were causing the issue.


Yep, same here. Even a single large speck of dust causes that sensor to misbehave. In my case a rocket blower fixed the problem.



Sep 22, 2025 at 01:56 PM
Jeffrey
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p.1 #5 · Sony A1ii - delay in auto switching between LCD screen and viewfinder


Or just leave the EVF display on full time.


Sep 25, 2025 at 08:55 AM
MMP
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p.1 #6 · Sony A1ii - delay in auto switching between LCD screen and viewfinder


I couldn't see anything on the sensor, but one quick puff with a blower and seems to be working fine now. Guess its just extremely sensitive/finicky.


Sep 25, 2025 at 10:24 AM







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