Set Default MaxZoom to 22

src/mbgl/annotation/render_annotation_source.cpp

@@ -38,7 +38,7 @@ void RenderAnnotationSource::update(Immutable<style::Source::Impl> baseImpl_,
                        parameters,
                        SourceType::Annotations,
                        util::tileSize,
-                       { 0, 22 },
+                       { 0, util::DEFAULT_MAX_ZOOM },
                        [&] (const OverscaledTileID& tileID) {
                            return std::make_unique<AnnotationTile>(tileID, parameters);
                        });

src/mbgl/map/transform_state.hpp

@@ -96,7 +96,7 @@ private:
 
     // Limit the amount of zooming possible on the map.
     double min_scale = std::pow(2, 0);
-    double max_scale = std::pow(2, 20);
+    double max_scale = std::pow(2, util::DEFAULT_MAX_ZOOM);
     double min_pitch = 0.0;
     double max_pitch = util::PITCH_MAX;