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Auto ISO question on A7iv for stills

  
 
huggies
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p.2 #1Auto 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 12:54 PM
jeffbuzz
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p.2 #2Auto 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 01:35 PM
snegron7
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p.2 #3Auto 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 07:32 AM
snegron7
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p.2 #4Auto 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 07:34 AM
Jonas B
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p.2 #5Auto 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 08:21 AM
huggies
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p.2 #6Auto 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 09:01 AM
snegron7
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p.2 #7Auto 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 09:08 AM
j4nu
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p.2 #8Auto ISO question on A7iv for stills
snegron7 wrote:
huggies wroteWell 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.


Are you sure you are still in AUTO-ISO when you switch to M?
Dec 16, 2025 at 09:19 AM
snegron7
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p.2 #9Auto ISO question on A7iv for stills


j4nu wrote:
snegron7 wrote
huggies wroteWell 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.
Are you sure you are still in AUTO-ISO when you switch to M?


Yes.
Dec 16, 2025 at 09:20 AM
 


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jeffbuzz
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p.2 #10Auto ISO question on A7iv for stills
snegron7 wrote:
jeffbuzz wroteWhat 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).


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 11:16 AM
Dave981
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p.2 #11Auto ISO question on A7iv for stills
Dec 16, 2025 at 11:31 AM
snegron7
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p.2 #12Auto ISO question on A7iv for stills


jeffbuzz wrote:
snegron7 wrote
jeffbuzz wroteWhat 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).
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 11:35 AM
maestrofilms
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p.2 #13Auto 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 11:54 AM
jeffbuzz
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p.2 #14Auto ISO question on A7iv for stills
snegron7 wrote:
jeffbuzz wrote
snegron7 wrote
jeffbuzz wroteWhat 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).
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.


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 10:03 AM
snegron7
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p.2 #15Auto 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 11:44 AM
maestrofilms
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p.2 #16Auto ISO question on A7iv for stills
snegron7 wrote:
Dave981 wroteYou 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.


Are you shooting in a particular creative look, or picture profile?
Dec 18, 2025 at 01:11 PM
snegron7
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p.2 #17Auto ISO question on A7iv for stills


maestrofilms wrote:
snegron7 wrote
Dave981 wroteYou 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.
Are you shooting in a particular creative look, or picture profile?


Nope. Everything is pretty much set to standard.
Dec 18, 2025 at 01:46 PM


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