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Dear Sir:

You are comparing fully processed JPEGs, it sharpening applied during the processing, to fast demosaicking in FastRawViewer.

During final raw convertion (in-camera or using a converter on a computer) sharpening is applied behind the scenes automatically (which, in our mind, is not an option for evaluating raw images), and also converters use slower demosaicking.


To help with the issue, In FastRawViewer we have:


Focus Peaking, 'E' and 'D' buttons on the bottom bar or through a shortcut, assigned to 'P' key by default.

• 'E" is for High contrast edges – enables the outlines for contrasty details using color contouring. Edges display color sets the color for the contours.

• 'D' is for Fine details – enables the outlines for the areas with plenty of smaller sharp details using color contouring. Details display color sets the color for the contours.

• Focus Peaking layer opacity in Preferences, GPU Processing – controls the fading of the main image for the Focus Peaking contours to be visible better. 


Screen Sharpening, 'USM' button on the bottom bar or through a shortcut, assigned to 'S' key by default. The settings for Screen Sharpening are in Preferences - Image Display - On-screen Sharpening; 2 presets.

• Preset 1/Mode:

• Always on – sharpening for display is always on

• Button/Shortcut – turns on when the button is pressed.

• Preset 2/Enabled – allows one to use a second group of parameters for sharpening, thus cycling will be between Off-Preset1-Preset2 or Off-Preset1.

• Radius – the radius the Unsharp Mask filter, which closely correlates to the Radius parameter in Adobe Photoshop USM settings.

• Amount – the strength of the sharpening, same as Amount Photoshop USM amount.

• Sharpen RAW files only – if this setting is on, the sharpening for display will affect RAW files only. 


More computationally intensive demosaicking, Preferences - GPU Processing - Image Resampling Method drop-down.

• No resampling – for large zoom factors, the image will look as if it is constituted of small square tiles. The fastest method.

• Bilinear resampling – pretty fast, mid-quality method

• Bicubic resampling – high-quality method, can be slow, a relatively fast vast video card is recommended.