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The tools being tested offer sliders that let you set the strength of the various noise reduction options.It can be a very hit and miss affair trying to find the best settings. With this image, it reduced the noise a little. I chose 1.5 pixels.įor images with low amounts of noise, this method can work. Blur the image using Gaussian blur at a low radius.Luminar and Exposure X5 have their own noise reduction tools.Īs a control point, I also used the Gaussian Blur noise removal method. Photoshop and Affinity Photo have their own noise reduction filters. Noise Ninja was one of the earliest dedicated noise removal programs and remains one of the best. Photo Ninja contains the Noise Ninja engine. Topaz DeNoise AI processed a 16 bit TIFF if the image.ĭXO Photo Lab 3 has two noise removal options – Prime and Fast.
In theory, this gives them an advantage as noise is best removed as early as possible. I presented the RAW file (the CR3 file, or a DNG created from it) to tools that can read it.
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I shot the test image at ISO 12800 and has produced nasty levels of luminance and colour noise. At lower ISOs colour noise is usually absent. These don’t tend to be uniform but are often random.
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This noise is usually a uniform pattern that software can identify and attempt to remove.Ĭolour noise occurs at high ISOs where the sensor produces false colours. Luminance noise is a pattern of noise caused by the sensor’s signal-to-noise characteristics – at high ISOs (or in low light or both) the sensor may not receive sufficient light to transmit a reliable luminance value. There are two categories of noise: luminance and colour. At large ISOs, all cameras produce noise. Cameras and smartphones with small sensors produce noise in low light, even at lower ISO settings. It is not the fastest tool in operation, but you waste no time finding the optimum settings.
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In fact, Sharpen AI removes noise from an image! Considering that a sharpening pass should be the final step in your workflow, this is a big plus for Topaz. The other tools have introduced some noise into it. The main difference between Topaz Sharpen AI and the others is seen in the sky.
The results – in focus imageĪll the tools have sharpened the image well. There are colour differences between the results as Photoshop, DXO and Luminar were working off the RAW image, Photo Ninja worked off a DNG created from the RAW image and the others worked off a basic, unsharpened TIFF output from the RAW image by Exposure X5. In this image, I found the automatic settings to be fine. It offers automatic settings, which you can also adjust manually. I spent much time manually adjusting each tool for optimal results apart from Topaz Sharpen AI. Of the modes offered by Focalblade, this is the most sophisticated and always yields good results. I presented it with an unsharpened TIF of this image and performed a two stage sharpening process – Capture and Creative. It is a very good tool with a wealth of options. Luminar 4 and Photo Ninja provide Detail adjustment and sharpening.įocalblade is a Photoshop plugin and a standalone application. It contains Camera/Lens profiles that compensate for lens edge and corner softness. DXO Photo Lab has always had a unique feature. The other tools I tested range from having a bewildering set of options (Focalblade) to automatic settings (NIK Define). It’s not scientific, but often provides good enough results.
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That is fine for a handful of images, but impractical for large sets of images.Īdjusting the settings until it yields good results can be a lengthy process of trial and error, so many photographers have their favourite settings and stick with those. If you spend more time, then creating a layer with a layer mask can provide a greater level of control over the sharpening process. USM is global – it sharpens the whole picture, although its settings build a mask that targets edges and leaves flat areas alone. The main challenge with sharpening a good image is to not introduce unwanted artefacts – halos and noise. Photographers have used USM (Unsharp Mask), the standard Photoshop/Affinity Photo sharpening method, for years and with good results.
In theory at least, sharpening an in-focus image is fairly straightforward.
Sharpen AI has three sharpening modes: Sharpen, Focus and Blur.
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