You can now use the magnifying glass symbol to zoom in and out in the individual frames. You can also press the button for slightly longer in order to select zoom functions from the menu. Here too, the small triangle next to the icon shows that additional options are available.
In the zoomed preview, sufficient data is available to adapt your image manually with a very high degree of precision and to optimize it with the automatic image function.
If you have activated the high resolution preview beforehand, you can now call up this enlarged preview of your images without scanning them again. In the Navigator, you can change between the frames in the preview without having to exit the Zoom view every time.
The 1:1 preview and the HQ preview
The 1:1 preview and the HQ (High Quality) preview both start a Zoom preview with a 100% view. This means that a preview scan is performed with the set scan resolution in the preview, you now see a section of the image (in its original size at the set resolution) that you can move via the yellow frame in the Navigator, or by pressing the space bar while simultaneously moving the preview with the left mouse button pressed.
The effect of most tools is best assessed at the resolution that you will also scan with. Sharpening using the unsharp masking for example depends greatly on the resolution used. The 1:1 and HQ preview provide reliable and predictable results. Since the image can be directly saved after a 1:1 or HQ preview for which all the required data has been collected from the scanner, this function requires no additional time.
The 1:1 preview and the HQ preview both allow precise adaption of your image. They differ in the fact that the 1:1 preview, the selected tools are initially calculated only for the area that yo have currently got selected with the yellow frame in the Navigator. The HQ preview on the other hand immediately calculates the tools for the entire image, so that the yellow frame can be moved back and forth without a renewed filter calculation.