Hdr pro banding problem

Forum|Forum|1 year ago
November 25, 2024
1 reply
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Hi,

I'm using Photoshop 26 and camera Raw 17. Starting from 7 shots with bracketing -1.0 to +1.0 stops I have a banding problem merging with HDR Pro default setup (16 bit).

The area close to the sun has a lot of artifacts as show in the attach. I don't know why. Could you help me to solve the problem? Thanks.

Windows

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Correct answer D Fosse

Generally, with 16 bit data, any banding you see on screen is in your display system - which only has 8 bit depth.

Does the banding change when you change the tone mapping of the HDR file? If it does, the logical conclusion would normally be that it's in the display pipeline. However! - that assumes you have caught the full dynamic range of the scene with bracketing, which I honestly doubt with only a two stop range. This is an extremely high contrast scene, and I would assume five or six stops would be needed here, possibly more.

With a 32 bit file, what you see on screen is just a "window" into the HDR data. That's why you do tone mapping, to decide what part of the HDR data to fit into that SDR window.

D Fosse

Correct answer

Community Expert

Generally, with 16 bit data, any banding you see on screen is in your display system - which only has 8 bit depth.

Does the banding change when you change the tone mapping of the HDR file? If it does, the logical conclusion would normally be that it's in the display pipeline. However! - that assumes you have caught the full dynamic range of the scene with bracketing, which I honestly doubt with only a two stop range. This is an extremely high contrast scene, and I would assume five or six stops would be needed here, possibly more.

With a 32 bit file, what you see on screen is just a "window" into the HDR data. That's why you do tone mapping, to decide what part of the HDR data to fit into that SDR window.