diff --git a/src/gui/rhi/qrhimetal.mm b/src/gui/rhi/qrhimetal.mm
index ac372e10864..4edf0ac865e 100644
--- a/src/gui/rhi/qrhimetal.mm
+++ b/src/gui/rhi/qrhimetal.mm
@@ -6331,22 +6331,24 @@ QRhiSwapChainHdrInfo QMetalSwapChain::hdrInfo()
 {
     QRhiSwapChainHdrInfo info;
     info.limitsType = QRhiSwapChainHdrInfo::ColorComponentValue;
-    if (m_format == SDR) {
-        info.limits.colorComponentValue.maxColorComponentValue = 1;
-        return info;
+    info.limits.colorComponentValue.maxColorComponentValue = 1;
+    info.isHardCodedDefaults = true;
+
+    if (m_format != SDR && m_window) {
+        // Must use m_window, not window, given this may be called before createOrResize().
+#ifdef Q_OS_MACOS
+        NSView *view = reinterpret_cast<NSView *>(m_window->winId());
+        info.limits.colorComponentValue.maxColorComponentValue = view.window.screen.maximumExtendedDynamicRangeColorComponentValue;
+        info.isHardCodedDefaults = false;
+#else
+        if (@available(iOS 16.0, *)) {
+            UIView *view = reinterpret_cast<UIView *>(m_window->winId());
+            info.limits.colorComponentValue.maxColorComponentValue = view.window.windowScene.screen.currentEDRHeadroom;
+            info.isHardCodedDefaults = false;
+        }
+#endif
     }
 
-#ifdef Q_OS_MACOS
-    info.isHardCodedDefaults = false;
-    // Must use m_window, not window, given this may be called before createOrResize().
-    NSView *view = reinterpret_cast<NSView *>(m_window->winId());
-    info.limits.colorComponentValue.maxColorComponentValue = view.window.screen.maximumExtendedDynamicRangeColorComponentValue;
-#else
-    // ### Fixme: Maybe retrieve the brightness from the screen and if we're not at full brightness we might be able to do more.
-    // For now, assume 2, in line with iPhone 12 specs that claim 625 nits max brightness and 1200 nits max HDR brightness.
-    info.isHardCodedDefaults = true;
-    info.limits.colorComponentValue.maxColorComponentValue = 2;
-#endif
     return info;
 }