DxO PhotoLab 4 DeepPRIME denoise example

DxO PhotoLab 4 DeepPRIME noise reduction in action. The left image is without noise reduction or sharpening. The middle image adds denoising (Luminance 90). Finally, the right image adds Lens Sharpening (Global 1.8). Other edits are the same for all the tree images.

I have been reluctant to publish the image in my previous post, Heidelberg Castle at Night. It is a single frame taken without a tripod at ISO 5000. It has a fair amount of noise and does not appear very sharp. The latest instalment of DxO PhotLab added an improved version of the PRIME denoising algorithm called DeepPRIME. I decided to see what it can do to this picture.

Enabling DeepPRIME and bumping Luminance up to 90 eliminates the noise completely, but the image appears slightly blurred. A lower value would have been enough for most of the picture, but 90 gives a better transition between the hill and the sky. To bring back some of the detail, I increased Lens Sharpening Global to 1.8.

The image above shows zoomed-in examples of the different steps, and below is the full edited image.

The full edited version of the image.