Factorio Forums

In version 1.1.100 in map mode you used to be able to see range of nearby turrets in red when placing a new one:

Currently in version 2.0.8 you only see ranges of turrets when zoomed out to a pixelated level

This is not really a bug.
In 1.1.x, the turret ranges were shown only in the chart(map), when the "Turret coverage" button is selected, regardless if you are holding a turret or not.
The new 2.0.x remote view is no longer a chart and is meant to be used more often to build, so visualizations like logistic network coverage and turret range are only showed when zoomed out to not distract the player with visual noise.

But I recognize the loss of a useful functionality so I implemented a different way: Turret ranges will be shown when holding a turret to be built, regardless if it's zoomed in remote view or the normal player view. It's also shown if you are holding a blueprint that contains at least a turret and "Show turret radius when blueprinting" is enabled.
The feature will be available in Version: 2.0.48.

Looking forward to it!
I also find this functionality useful

Just like the sentry gun in Team Fortress 2.