DeNoise AI in action
For this test I took one low light, nighttime, photo, one ‘regular’ photo and one photo that exceeded the camera’s dynamic range where I used my RAW converter to recover the shadows. This led to an image that was noise free in the highlights and noisy in the shadows. That’s an ideal candidate for selective noise reduction.
Night time image
I took this night time image at ISO 6400 (I wrongly say ISO 3200 in the video) and it is full of noise.
To process this image in Denoise AI I selected ‘Auto’ for the main noise reduction and then turned the Low Light mode on. The results speak for themselves:
I need to make no comment, other than the image looks more like ISO 100 – 400 and not 6400!
Selective Noise Reduction in DeNoise AI
Whereas ‘Low Light’ mode is a simple switch, selective noise reduction requires user input.
Topaz has made it easy. You use the mask tool to paint over the areas to improve. Non-masked areas are not affected by the noise reduction. The tool is easy to use and features ‘edge detection’. You use this feature to make precise selections, although they need not be as precise as when removing objects from a scene.
You can invert the mask, remove the mask and change the mask brush’s dimensions.
I masked the following picture:
This picture shows a common scenario – the dynamic range is too large for the camera. I exposed for the highlights and then used my RAW Converter (Luminar) to bring out detail in the shadows. In doing so, it introduced noise into the shadows.
This technique is especially useful when taking images in poor light with significant highlights with a camera that has an ISO Invariant sensor. You set the camera to a low ISO and underexpose by several stops. Then you bring out details in the shadows without affecting the highlights. The net result is the highlights are noise free but the shadows are not.
I now want to remove the noise without affecting the highlights. Noise reduction can (and usually does) result in loss of quality and detail. As good as DeNoise AI is, it is still better to leave noiseless areas alone.
I painted this mask using the masking tool:
The mask is not perfect, and I could spend more time on it. But it’s good enough for this demo.
Here is the result after DeNoise has removed the noise:
The mask prevents the highlights from being processed.
Topaz DeNoise AI – Conclusion and Special Offer
Topaz is offering DeNoise AI at the reduced price of $59.99 us until 12th June. Their Utility Bundle (DeNoise AI, Gigapixel AI, Sharpen AI and JPEG to RAW AI) is on offer at $195.99 (from $359.99). Now is a great time to try out Topaz Labs AI products.