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Auto ISO question on A7iv for stills

  
 
huggies
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p.2 #1 · Auto ISO question on A7iv for stills


Perhaps try reading the manual, ISO Auto, ISO Range Limit and ISO Auto Min. SS are three separate but highly related functions:

https://helpguide.sony.net/ilc/2110/v1/en/contents/TP1000640844.html

https://helpguide.sony.net/ilc/2110/v1/en/contents/TP1000656462.html

https://helpguide.sony.net/ilc/2110/v1/en/contents/TP1000640843.html


I read that a reset solved the problem, indicating to me your problem was user error e.g. a faulty setting or an interplay of misunderstood settings.



Dec 15, 2025 at 01:54 PM
jeffbuzz
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p.2 #2 · Auto ISO question on A7iv for stills


What is your camera mode dial set to? ISO AUTO Min. SS only works in "A" and "P" modes. "M" and "S" modes override any attempt at auto shutter speed with your manual setting.


Dec 15, 2025 at 02:35 PM
snegron7
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p.2 #3 · Auto ISO question on A7iv for stills




jeffbuzz wrote:
What is your camera mode dial set to? ISO AUTO Min. SS only works in "A" and "P" modes. "M" and "S" modes override any attempt at auto shutter speed with your manual setting.



That's the problem I'm having!! When shooting in M, it overrides my settings and defaults to ISO 800. In my experience with every digital camera I've ever owned, this has never been the case (not even with my old A7c).



Dec 16, 2025 at 08:32 AM
snegron7
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p.2 #4 · Auto ISO question on A7iv for stills



huggies wrote:
Perhaps try reading the manual, ISO Auto, ISO Range Limit and ISO Auto Min. SS are three separate but highly related functions:

https://helpguide.sony.net/ilc/2110/v1/en/contents/TP1000640844.html

https://helpguide.sony.net/ilc/2110/v1/en/contents/TP1000656462.html

https://helpguide.sony.net/ilc/2110/v1/en/contents/TP1000640843.html

I read that a reset solved the problem, indicating to me your problem was user error e.g. a faulty setting or an interplay of misunderstood settings.



They only work in A and P modes. The moment I switch to M, my A7iv defaults to ISO 800 regardless of my settings.

p.s. I read the manual. I also read the book by David Busch regarding the A7iv. I also read several dozen Google posts. I also viewed several YouTube videos. Please don't assume I haven't "read the manual."



Dec 16, 2025 at 08:34 AM
Jonas B
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p.2 #5 · Auto ISO question on A7iv for stills


snegron7 wrote:
They only work in A and P modes. The moment I switch to M, my A7iv defaults to ISO 800 regardless of my settings.
[...]


That sounds strange to me. I have never held an A7iv in my hands but have a lot of experience from several other Sony FF cameras. AutoISO has worked in A, S and M mode just fine. (P mode I've never used, can't say.)

So the A7iv in still image mode, M mode defaults to ISO800 if set to AutoISO and _all_ other dependent settings are set to allow lower ISO values? Can that be right?



Dec 16, 2025 at 09:21 AM
huggies
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p.2 #6 · Auto ISO question on A7iv for stills


Well I'm sorry but I'm just as baffled as Jonas B.
There has to be a logical reason why your Auto ISO range is being overruled.
There are some custom functions that are able to override Auto ISO, such as Recall Camera Setting and Reg. Custom Shoot Set.



Dec 16, 2025 at 10:01 AM
snegron7
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p.2 #7 · Auto ISO question on A7iv for stills




huggies wrote:
Well I'm sorry but I'm just as baffled as Jonas B.
There has to be a logical reason why your Auto ISO range is being overruled.
There are some custom functions that are able to override Auto ISO, such as Recall Camera Setting and Reg. Custom Shoot Set.


I too am frustrated and just as baffled as you and Jonas B! This doesn't happen on my A7c. It's only happening on my A7iv. Maybe it's a glitch in my firmware (5.01)? I have no clue at this time.



Dec 16, 2025 at 10:08 AM
j4nu
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p.2 #8 · Auto ISO question on A7iv for stills


snegron7 wrote:
I too am frustrated and just as baffled as you and Jonas B! This doesn't happen on my A7c. It's only happening on my A7iv. Maybe it's a glitch in my firmware (5.01)? I have no clue at this time.


Are you sure you are still in AUTO-ISO when you switch to M?



Dec 16, 2025 at 10:19 AM
snegron7
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p.2 #9 · Auto ISO question on A7iv for stills




j4nu wrote:
Are you sure you are still in AUTO-ISO when you switch to M?


Yes.



Dec 16, 2025 at 10:20 AM
 


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jeffbuzz
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p.2 #10 · Auto ISO question on A7iv for stills


snegron7 wrote:
That's the problem I'm having!! When shooting in M, it overrides my settings and defaults to ISO 800. In my experience with every digital camera I've ever owned, this has never been the case (not even with my old A7c).


Every camera I know of works this way including the Sony a7C and the Canon R5 and R6. Auto shutter speed only works in "A" or "P" modes. That is by design. M(anual) and S(hutter priority) modes mean you directly control shutter speed. It would make no sense to allow auto shutter speed in those modes.



Dec 16, 2025 at 12:16 PM
Dave981
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p.2 #11 · Auto ISO question on A7iv for stills


You don't happen to be in S-Log, do you?
https://us.community.sony.com/s/question/0D5Dp00000Vjc2lKAB/a7iv-autoiso-wont-go-below-800?language=en_US



Dec 16, 2025 at 12:31 PM
snegron7
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p.2 #12 · Auto ISO question on A7iv for stills




jeffbuzz wrote:
Every camera I know of works this way including the Sony a7C and the Canon R5 and R6. Auto shutter speed only works in "A" or "P" modes. That is by design. M(anual) and S(hutter priority) modes mean you directly control shutter speed. It would make no sense to allow auto shutter speed in those modes.


We're talking about auto ISO, not auto shutter speed.



Dec 16, 2025 at 12:35 PM
maestrofilms
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p.2 #13 · Auto ISO question on A7iv for stills


Dave981 wrote:
You don't happen to be in S-Log, do you?
https://us.community.sony.com/s/question/0D5Dp00000Vjc2lKAB/a7iv-autoiso-wont-go-below-800?language=en_US


That was my first thought too



Dec 16, 2025 at 12:54 PM
jeffbuzz
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p.2 #14 · Auto ISO question on A7iv for stills


snegron7 wrote:
We're talking about auto ISO, not auto shutter speed.


Auto ISO has an auto shutter speed component which only works in "A" and "P" modes. That is the entire point of the "ISO AUTO Min. SS" menu.



Dec 18, 2025 at 11:03 AM
snegron7
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p.2 #15 · Auto ISO question on A7iv for stills




Dave981 wrote:
You don't happen to be in S-Log, do you?
https://us.community.sony.com/s/question/0D5Dp00000Vjc2lKAB/a7iv-autoiso-wont-go-below-800?language=en_US



No clue on how to even get to S-Log, as I don't shoot video.



Dec 18, 2025 at 12:44 PM
maestrofilms
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p.2 #16 · Auto ISO question on A7iv for stills


snegron7 wrote:
No clue on how to even get to S-Log, as I don't shoot video.


Are you shooting in a particular creative look, or picture profile?



Dec 18, 2025 at 02:11 PM
snegron7
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p.2 #17 · Auto ISO question on A7iv for stills




maestrofilms wrote:
Are you shooting in a particular creative look, or picture profile?


Nope. Everything is pretty much set to standard.



Dec 18, 2025 at 02:46 PM
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