Evaluating sharpness with the Focus Mask
The Focus Mask tool is intended as a means of evaluating the sharpness of an image at the time of capture, particularly when working tethered. However, it is also useful when identifying and selecting properly focused images and attendant depth of field prior to adding sharpening.
- Press the Focus Mask icon. Sharp areas will be highlighted in a (default) green marking.
- Go to Capture One -> Preferences on macOS or Edit -> Preferences on Windows to adjust the Focus Mask settings.
Checking sharpness and focus with the Focus tool
Capture One’s Focus tool has a preview window that can be used to examine a part of an image in detail at up to 400% magnification without zooming into the Viewer. The Focus tool can also be undocked from the toolbar and placed anywhere in the Viewer. For adding convenience when sharpening, you can also undock the Sharpening tool from the toolbar and dock it beneath the floating Focus window.
- Go to the Details tool tab.
- The Focus tool shows a section of the image that can be magnified up to 400%.
- Use the Pick Focus Point icon to select the desired area (in the Viewer) to inspect in detail.
- Adjust the magnification on the slider below the window or click on the icons on each side to alter the magnification in steps. Sharpness should be assessed at 50% and at 100%.
- To resize the preview window, click on an edge or corner and drag. Alternatively, click on the Action menu icon (…) and select a sizing option (Medium or Auto Size) from the list.