I had to reinstall version 5.7.1.
I'm wondering what happened to the zoom slider and how to get it back in plain sight for use.
Not obvious to me anyways.
Click on the little triangle at the right end of the toolbar. Put a checkmark next to the zoom tool.
You could press " Z" to zoom.
Press "T " and right click on the arrow above timeline from toolbar and select zoom
Also check 3 Ways To Zoom In On Your Photos in Lightroom - Lightroom Killer Tips
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