If Preferences - Zoom - Zoom step (for shortcut) is set to Large, then Zoom step scale is 70% - 50% - 30% - 20% - 15% so you may switch to preferred 20/30 via single shortcut press.
Also you can tune Zoom-Pan and Zoom-Drag zoom ratio to custom and switch to/from that zoom via Shift-Left/Right mouse press while using fit to screen as default zoom.
This is an unique request.
This is an unique request.
If Preferences - Zoom - Zoom step (for shortcut) is set to Large, then Zoom step scale is 70% - 50% - 30% - 20% - 15% so you may switch to preferred 20/30 via single shortcut press.
Also you can tune Zoom-Pan and Zoom-Drag zoom ratio to custom and switch to/from that zoom via Shift-Left/Right mouse press while using fit to screen as default zoom.
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Alex Tutubalin/FastRawViewer team