diff --git a/src/frontend/flask_app/blueprints/admin.py b/src/frontend/flask_app/blueprints/admin.py
index 77b2f8e..bf38e8c 100644
--- a/src/frontend/flask_app/blueprints/admin.py
+++ b/src/frontend/flask_app/blueprints/admin.py
@@ -182,7 +182,7 @@ def api_camera_sources():
     if parsed.scheme not in ("http", "https") or not parsed.netloc:
         return jsonify({"error": True, "detail": _("Indirizzo della camera non valido")}), 400
     try:
-        resp = http_requests.get(f"{url.rstrip('/')}/camera/sources", timeout=5)
+        resp = http_requests.get(f"{url.rstrip('/')}/camera/sources", timeout=15)  # #106: era 5, la prima apertura GenTL supera 15 s
     except http_requests.RequestException as exc:
         return jsonify({
             "error": True,
diff --git a/src/frontend/flask_app/blueprints/maker.py b/src/frontend/flask_app/blueprints/maker.py
index 6002a9d..e4e51c8 100644
--- a/src/frontend/flask_app/blueprints/maker.py
+++ b/src/frontend/flask_app/blueprints/maker.py
@@ -17,6 +17,9 @@ from services.file_proxy import proxy_file
 
 maker_bp = Blueprint("maker", __name__, url_prefix="/maker")
 
+# #106: la prima apertura GenTL dopo l'avvio supera 15 s, il grab ha bisogno di piu margine
+CAMERA_GRAB_TIMEOUT_S = 60
+
 
 # ============================================================================
 # PAGINE (GET)
@@ -608,7 +611,7 @@ def api_station_camera_grab(station_id: int):
         resp = http_requests.post(
             f"{camera_url.rstrip('/')}/camera/grab",
             json={"source": camera_source, "trigger": "continuo", "timeout_ms": 5000},
-            timeout=15,
+            timeout=CAMERA_GRAB_TIMEOUT_S,  # #106: era 15, troppo corto alla prima apertura GenTL
         )
     except http_requests.RequestException as exc:
         return jsonify({
diff --git a/src/frontend/flask_app/blueprints/measure.py b/src/frontend/flask_app/blueprints/measure.py
index c634b53..dc19562 100644
--- a/src/frontend/flask_app/blueprints/measure.py
+++ b/src/frontend/flask_app/blueprints/measure.py
@@ -17,6 +17,9 @@ from services.file_proxy import proxy_file
 
 measure_bp = Blueprint("measure", __name__)
 
+# #106: la prima apertura GenTL dopo l'avvio supera 15 s, il grab ha bisogno di piu margine
+CAMERA_GRAB_TIMEOUT_S = 60
+
 # Session key holding a station chosen at runtime, overriding Config.STATION_CODE.
 STATION_OVERRIDE_KEY = "station_override"
 
@@ -1117,7 +1120,7 @@ def api_vision_grab():
         resp = http_requests.post(
             f"{camera_url.rstrip('/')}/camera/grab",
             json={"source": camera_source, "trigger": "continuo", "timeout_ms": 5000},
-            timeout=15,
+            timeout=CAMERA_GRAB_TIMEOUT_S,  # #106: era 15, troppo corto alla prima apertura GenTL
         )
     except http_requests.RequestException as exc:
         return jsonify({
diff --git a/src/frontend/flask_app/tests/test_admin_stations.py b/src/frontend/flask_app/tests/test_admin_stations.py
index 084fc79..1b2289a 100644
--- a/src/frontend/flask_app/tests/test_admin_stations.py
+++ b/src/frontend/flask_app/tests/test_admin_stations.py
@@ -278,7 +278,7 @@ def test_camera_sources_proxy_keeps_only_the_three_fields(logged_in_client, mock
         "name": "camera:folder", "label": "Cartella", "kind": "folder"}
     assert len(resp.get_json()["sources"]) == 2
     assert get.call_args.args[0] == "http://acq:8765/camera/sources"
-    assert get.call_args.kwargs["timeout"] == 5
+    assert get.call_args.kwargs["timeout"] == 15  # #106
 
 
 @pytest.mark.parametrize("url", ["ftp://x", "", "http://", "acq:8765"])
diff --git a/src/frontend/flask_app/tests/test_measure_camera_grab.py b/src/frontend/flask_app/tests/test_measure_camera_grab.py
index 23fd5cd..4b6308e 100644
--- a/src/frontend/flask_app/tests/test_measure_camera_grab.py
+++ b/src/frontend/flask_app/tests/test_measure_camera_grab.py
@@ -68,7 +68,7 @@ def test_grab_passes_png_through(logged_in_client, mock_api_client, monkeypatch)
     assert kwargs["json"] == {
         "source": "camera:folder", "trigger": "continuo", "timeout_ms": 5000,
     }
-    assert kwargs["timeout"] == 15
+    assert kwargs["timeout"] == 60  # #106
 
 
 def test_grab_service_503_is_502(logged_in_client, mock_api_client, monkeypatch):