Topaz "RAW" introduces some unwanted color in the white print, and on the left side of the crop - if you look underneath and on the right of the black on yellow word "Techniques" - you can see some unwanted noise artifacts on the yellow background in my experience Topaz sometimes guesses wrong and tries to save or "create" detail when there is only noise, like in this case. IMO DeepPrime clearly does the best job here. One was some smaller sized print white on black on the upper right side of the scene - here a 100% crop, again from top to bottom: original, DeepPrime, Topaz "RAW", Topaz "Severe Noise": I now looked closer at two parts of the image. The original sized JPG is too big to embed it here (45 MB), but you can access it here: The resulting variants in exact that order look downsized like this (scene somewhat cropped from the original to exclude unnecessary background):
Trying all available options I finally selected "Severe Noise" as processing method, auto values applied, because it produced clearly the best results. Topaz Denoise, run as plug-in from Photoshop I wanted to see how Topaz was impeded when it was provided with an already demosaiced file. Topaz DeNoise, run as stand alone program, method "RAW", auto values, saved as TIF (saving as DNG somehow screwed up the color profile, there seems to be a bug there).Ĥ. DxO Photolab's DeepPrime, default values, saved as DNG again.ģ. Import into Photoshop through Camera Raw with default values, no noise reduction appliedĢ. All in all I made four different versions of the DNG converted by LR:ġ.
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I took a test picture with my A7RII in RAW at ISO 25.600 in lossless RAW, imported in LR to convert it into a DNG (no edits) and threw the resulting file at the current version of those two software packages: 5.13 of DxO Photolab 5 Elite (free trial version) and 3.5.0 of Topaz DeNoise. Quality parameter, from fast processing to best quality.After Jacques Cornell's example picture he posted here I just had to see how Topaz DeNoise in its latest version compares to DxO DeepPrime.Transient boost parameter, to increase the attack that is often attenuated with this kind of process.
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Then this noise is attenuated or suppressed on the whole recording.įor more information about attenuating the background noise, a detailed user manual is provided with the plugin. The plugin learns the characteristics of the noise. This part can be for example the beginning or the end of the recording. The track must contain at least a small part (even very brief) containing only noise. The BlueLab Denoiser plugin works on all types of sounds, not only on vocals and on a subset of musical sounds. The noise and the interesting signal are separated in the spectral domain, and then the noise is attenuated or suppressed on the entire track. Denoiser is a noise remover that attenuates or even suppress the background noise on a track, by learning the characteristics of the noise.
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