Panasonic GH5 High ISO NR
Panasonic GH5 Noise Reduction
The Panasonic GH5 offers no fewer than 11(!) noise reduction levels, offering very fine granularity on noise reduction strength, however there doesn't appear to be a way to assign different NR levels to specific ISO ranges as we've seen on some cameras. The Panasonic GH5 user manual doesn't say when noise reduction kicks in, so we've included crops from the entire range of ISOs in the tables below.
See for yourself how the Panasonic GH5's default and -5 (lowest) noise reduction settings compare to RAW without noise reduction under daylight-balanced lighting. (Note that these RAW images also have no sharpening applied, so they're a little softer than camera JPEGs at low ISOs.) Click on any of the crops below to see the corresponding full-sized image.
The Panasonic GH5's default high ISO noise reduction setting provides a pretty good tradeoff between noise and detail at lower ISOs to our eye, but we'd probably shoot with a lower setting at higher ISOs and reduce noise ourselves in post-processing (or just shoot RAW). As you can see, the GH5 already applies noise reduction at its lowest (extended) ISO of 100. At the other end of the ISO range, you can see that the GH5 is quite effective at reducing noise -- especially the chroma component -- even at the lowest NR setting.
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