Steve Spencer wrote: aCuria wrote: ruthenium wrote:
FF sensors have no DR advantage over the cropped sensors at ISO above 400, and at high ISO.
I think you are misinterpreting something?
In general FF sensors have a ~1 stop DR advantage over APSC at all ISOs
the ISO 400 thing is specifically about the Z8/9: The A1ii is one stop better <= 400, and half stop better >= ISO 800
What you are missing is that if you shoot with lenses that have equivalent focal lengths and depth of field on the cropped sensor if you shoot at the same shutter speed the cropped sensor camera will be shooting at a lower ISO. Perhaps and example will help.
If you shot a 50mm lens on a FF camera at ISO 800, f/2 and 1/100 shutter speed, if you shot an APS-C 33mm lens at f/1.4 (which would have the same field of view and about the same depth of field) and kept the same 1/100 shutter speed the exposure would be the same with ISO 400 and the two shots would have very similar DR.
You are right here. In Summary:
In poor light, when you need to control DOF, the dynamic range is similar (FF ISO set higher)
group photos
macro photography
In good light, when you need to control DOF, FF has 1 stop more DR (both cameras at base iso, APSC Shutter set higher)
Daytime photography outdoors
Studio photography with flash.
When shooting wide open with the same lens, FF has 1 stop more DR (when we want as shallow dof as possible)
Steve Spencer wrote: aCuria wrote: ruthenium wrote:
FF sensors have no DR advantage over the cropped sensors at ISO above 400, and at high ISO.
I think you are misinterpreting something?
In general FF sensors have a ~1 stop DR advantage over APSC at all ISOs
the ISO 400 thing is specifically about the Z8/9: The A1ii is one stop better <= 400, and half stop better >= ISO 800
What you are missing is that if you shoot with lenses that have equivalent focal lengths and depth of field on the cropped sensor if you shoot at the same shutter speed the cropped sensor camera will be shooting at a lower ISO. Perhaps and example will help.
If you shot a 50mm lens on a FF camera at ISO 800, f/2 and 1/100 shutter speed, if you shot an APS-C 33mm lens at f/1.4 (which would have the same field of view and about the same depth of field) and kept the same 1/100 shutter speed the exposure would be the same with ISO 400 and the two shots would have very similar DR.
You are right here. In Summary:
In poor light, when you need to control DOF, the dynamic range is similar (FF ISO set higher)
group photos
macro photography
In good light, when you need to control DOF, FF has 1 stop more DR (both cameras at base iso, APSC Shutter set higher)
Daytime photography outdoors
Studio photography with flash.
When shooting wide open with the same lens, FF has 1 stop more DR (when we want as shallow dof as possible)
Low light photography
Detail shots
Portraits when the background is distracting
Sep 23, 2025 at 10:00 PM
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