As others have noted, the A7V does appear to apply noise reduction to its RAW files. This makes comparisons more difficult. However, the unusually strong performance below ISO 400 is more likely the result of something similar to Arri's Dual Gain Architecture or Panasonic's Dynamic Range Boost. rather than noise reduction alone.
You can see this by comparing the A7V to other cameras that also apply RAW-level NR. Those models still show a dynamic-range dip below the second base ISO, whereas the A7V and Panasonic S1ii do not exhibit such a dip at all.
I’m cautiously optimistic that the A7V’s strong low-ISO dynamic range is genuine, rather than simply the result of noise-reduction processing.
https://www.arri.com/en/learn-help/arri-camera-technology/alev-sensors
"The Dual Gain Architecture simultaneously provides two separate read-out paths from each pixel with different amplification. The first path contains the regular, highly amplified signal. The second path contains a signal with lower amplification to capture the information that is clipped in the first path. Both paths feed into the camera's A/D converters, delivering a 14-bit image for each path. These images are then combined into a single 18/16-bit high dynamic range image. This method enhances low light performance and prevents the highlights from being clipped, thereby significantly extending the dynamic range of the image."
As others have noted, the A7V does appear to apply noise reduction to its RAW files. This makes comparisons more difficult. However, the unusually strong performance below ISO 400 is more likely the result of something similar to Arri's Dual Gain Architecture or Panasonic's Dynamic Range Boost. rather than noise reduction alone.
You can see this by comparing the A7V to other cameras that also apply RAW-level NR. Those models still show a dynamic-range dip below the second base ISO, whereas the A7V and Panasonic S1ii do not exhibit such a dip at all.
I’m cautiously optimistic that the A7V’s strong low-ISO dynamic range is genuine, rather than simply the result of noise-reduction processing.
https://www.arri.com/en/learn-help/arri-camera-technology/alev-sensors
"The Dual Gain Architecture simultaneously provides two separate read-out paths from each pixel with different amplification. The first path contains the regular, highly amplified signal. The second path contains a signal with lower amplification to capture the information that is clipped in the first path. Both paths feed into the camera's A/D converters, delivering a 14-bit image for each path. These images are then combined into a single 18/16-bit high dynamic range image. This method enhances low light performance and prevents the highlights from being clipped, thereby significantly extending the dynamic range of the image."
As others have noted, the A7V does appear to apply noise reduction to its RAW files. This makes comparisons more difficult. However, the unusually strong performance below ISO 400 is more likely the result of something similar to Arri's Dual Gain Architecture or Panasonic's Dynamic Range Boost. rather than noise reduction alone.
You can see this by comparing the A7V to other cameras that also apply RAW-level NR. Those models still show a dynamic-range dip below the second base ISO, whereas the A7V and Panasonic S1ii do not exhibit such a dip at all.
I’m cautiously optimistic that the A7V’s strong low-ISO dynamic range is genuine, rather than simply the result of noise-reduction processing.
https://www.arri.com/en/learn-help/arri-camera-technology/alev-sensors
"The Dual Gain Architecture simultaneously provides two separate read-out paths from each pixel with different amplification. The first path contains the regular, highly amplified signal. The second path contains a signal with lower amplification to capture the information that is clipped in the first path. Both paths feed into the camera's A/D converters, delivering a 14-bit image for each path. These images are then combined into a single 18/16-bit high dynamic range image. This method enhances low light performance and prevents the highlights from being clipped, thereby significantly extending the dynamic range of the image."
As others have noted, the A7V does appear to apply noise reduction to its RAW files. This makes comparisons more difficult. However, the unusually strong performance below ISO 400 is more likely the result of something similar to Arri's Dual Gain Architecture or Panasonic's Dynamic Range Boost. rather than noise reduction alone.
You can see this by comparing the A7V to other cameras that also apply RAW-level NR. Those models still show a dynamic-range dip below the second base ISO, whereas the A7V and Panasonic S1ii do not exhibit such a dip at all.
I’m optimistic that the A7V’s strong low-ISO dynamic range is genuine, rather than simply the result of noise-reduction processing.
https://www.arri.com/en/learn-help/arri-camera-technology/alev-sensors
"The Dual Gain Architecture simultaneously provides two separate read-out paths from each pixel with different amplification. The first path contains the regular, highly amplified signal. The second path contains a signal with lower amplification to capture the information that is clipped in the first path. Both paths feed into the camera's A/D converters, delivering a 14-bit image for each path. These images are then combined into a single 18/16-bit high dynamic range image. This method enhances low light performance and prevents the highlights from being clipped, thereby significantly extending the dynamic range of the image."
As others have noted, the A7V does appear to apply noise reduction to its RAW files. This makes comparisons more difficult. However, the unusually strong performance below ISO 400 is more likely the result of something similar to Arri's Dual Gain Architecture or Panasonic's Dynamic Range Boost. rather than noise reduction alone.
You can see this by comparing the A7V to other cameras that also apply RAW-level NR. Those models still show a dynamic-range dip below the second base ISO, whereas the A7V does not exhibit such a dip at all.
https://www.arri.com/en/learn-help/arri-camera-technology/alev-sensors
"The Dual Gain Architecture simultaneously provides two separate read-out paths from each pixel with different amplification. The first path contains the regular, highly amplified signal. The second path contains a signal with lower amplification to capture the information that is clipped in the first path. Both paths feed into the camera's A/D converters, delivering a 14-bit image for each path. These images are then combined into a single 18/16-bit high dynamic range image. This method enhances low light performance and prevents the highlights from being clipped, thereby significantly extending the dynamic range of the image."
You can see this by comparing the A7V to other cameras that also apply RAW-level NR. Those models still show a dynamic-range dip below the second base ISO, whereas the A7V does not exhibit such a dip at all.
https://www.arri.com/en/learn-help/arri-camera-technology/alev-sensors
"The Dual Gain Architecture simultaneously provides two separate read-out paths from each pixel with different amplification. The first path contains the regular, highly amplified signal. The second path contains a signal with lower amplification to capture the information that is clipped in the first path. Both paths feed into the camera's A/D converters, delivering a 14-bit image for each path. These images are then combined into a single 18/16-bit high dynamic range image. This method enhances low light performance and prevents the highlights from being clipped, thereby significantly extending the dynamic range of the image."
