I set the Auto ISO to a minimum of 100 for the lowest, 12,800 for the highest. However, when I'm shooting outside in strong daylight, the lowest ISO defaults to ISO 800 instead of ISO 100 like I set it for. I find myself having to manually enter my desired ISO when shooting outdoors to override the minimum ISO 800 that the A7iv defaults to.
Again, I changed it both in my menu systen and in the quick menu system that shows up when you press the Fn button on the back of the camera.
Also, again, this is when I'm shooting stills. I understand that the native ISO for video (s log) is ISO 800, but I'm not shooting video at all with this camera.
How do I get it to stay at ISO 100-12,800 when shooting with Auto ISO and not default to ISO 800?
snegron7 wrote:
I set the Auto ISO to a minimum of 100 for the lowest, 12,800 for the highest. However, when I'm shooting outside in strong daylight, the lowest ISO defaults to ISO 800 instead of ISO 100 like I set it for. I find myself having to manually enter my desired ISO when shooting outdoors to override the minimum ISO 800 that the A7iv defaults to.
Again, I changed it both in my menu systen and in the quick menu system that shows up when you press the Fn button on the back of the camera.
Also, again, this is when I'm shooting stills. I understand that the native ISO for video (s log) is ISO 800, but I'm not shooting video at all with this camera.
How do I get it to stay at ISO 100-12,800 when shooting with Auto ISO and not default to ISO 800?...Show more →
Depends on the lighting. For example, today it was a bright, sunny day with mixed clouds. I shot at f8 and 1/400. It defaulted to ISO 800. However, I then manually set it to ISO 100 and was properly exposed at f/8, 1/125.
I know there are several stops difference with the shutter speed I provided, but when I'm shooting in Aperture Priority, it defaults to ISO 800 at whatever aperture I select (camera ups the shutter speed to compensate for ISO 800).
snegron7 wrote:
Depends on the lighting. For example, today it was a bright, sunny day with mixed clouds. I shot at f8 and 1/400. It defaulted to ISO 800. However, I then manually set it to ISO 100 and was properly exposed at f/8, 1/125.
I know there are several stops difference with the shutter speed I provided, but when I'm shooting in Aperture Priority, it defaults to ISO 800 at whatever aperture I select (camera ups the shutter speed to compensate for ISO 800).
I reset it again and took a few test shots. Looks like it's now staying at the ISO I set for Auto ISO (100 to 12,800). I tried it in Aperture Priority mode, and it didn't default back to ISO 800.
Here's a link to a test shot I took with it compared to my Canon R6 (same settings on my end, but both cameras decided on different shutter speeds).
snegron7 wrote:
I reset it again and took a few test shots. Looks like it's now staying at the ISO I set for Auto ISO (100 to 12,800). I tried it in Aperture Priority mode, and it didn't default back to ISO 800.
Here's a link to a test shot I took with it compared to my Canon R6 (same settings on my end, but both cameras decided on different shutter speeds).
j4nu wrote:
So, it's like it was said already: 1/FL rule for shutter speed.
The other thing that might affect the exposure is exposure compensation dial.
So, basically in order for me to get the lowest ISO possible with my A7iv, I have to set it myself since Auto ISO is pretty much useless.
Ironically, I don't have this issue with my R6II. I set it to Auto ISO and it always selects the lowest ISO possible regardless of whether I'm shooting in Aperture Priority, Shutter, or Manual with no extra steps necessary.
snegron7 wrote:
So, basically in order for me to get the lowest ISO possible with my A7iv, I have to set it myself since Auto ISO is pretty much useless.
Ironically, I don't have this issue with my R6II. I set it to Auto ISO and it always selects the lowest ISO possible regardless of whether I'm shooting in Aperture Priority, Shutter, or Manual with no extra steps necessary.
Then why don't you just use your R6 II, if setting the Sony Auto ISO shutter speed to "SLOWER" is so difficult for you?
It's far from useless, you just need to learn how it works. Maybe you're just used to Canon.
I use auto-iso when I can't get the shot with 100ISO. Most of the time I manually set the exact value (not STD, etc. but an actual value like 1/x s) and it works flawlessly. If I switch from static to more dynamic targets, I simply bump ISO AUTO Min. SS, as I have it on the control wheel. If I'm shooting a zoom and I'm worried I might shake the camera too much I switch to STD and similar.
So, for each his own ...
I don't have the answer to the problem here. What I can say for sure is that the AutoISO works, and has worked just fine with my Sony cameras of later models. I don't see any reason for the A7iv to behave differently.
This leads me to think you need to check all your settings again as there is something odd going on here. You can of course make a conclusion about "Auto ISO is pretty much useless" but that doesn't seem rational at all.
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