diff --git a/src/photools3/settings.py b/src/photools3/settings.py
index 3fb5f46..1f8e09d 100644
--- a/src/photools3/settings.py
+++ b/src/photools3/settings.py
@@ -1,6 +1,14 @@
+from pathlib import Path
+
 from pydantic_core import Url
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
+PHOTOOLS3_DIR = Path(__file__).parent.resolve()
+SRC_DIR = PHOTOOLS3_DIR.parent
+ROOT_DIR = SRC_DIR.parent
+EXAMPLES_DIR = ROOT_DIR / "examples"
+DNG_EXAMPLES_DIR = EXAMPLES_DIR / "dng"
+
 
 class Settings(BaseSettings):
     model_config = SettingsConfigDict(env_file=".env")
diff --git a/test/test_settings.py b/test/test_settings.py
index 45c0ec5..a931d35 100644
--- a/test/test_settings.py
+++ b/test/test_settings.py
@@ -1,7 +1,38 @@
-from photools3.settings import Settings
+from pathlib import Path
+
+from photools3.settings import (
+    DNG_EXAMPLES_DIR,
+    EXAMPLES_DIR,
+    PHOTOOLS3_DIR,
+    ROOT_DIR,
+    SRC_DIR,
+    Settings,
+)
 
 settings = Settings()
 
 
+def test_photools3_dir():
+    assert PHOTOOLS3_DIR == Path(__file__).parent.parent.resolve() / "src" / "photools3"
+
+
+def test_src_dir():
+    assert SRC_DIR == Path(__file__).parent.parent.resolve() / "src"
+
+
+def test_root_dir():
+    assert ROOT_DIR == Path(__file__).parent.parent.resolve()
+
+
+def test_examples_dir():
+    assert EXAMPLES_DIR == Path(__file__).parent.parent.resolve() / "examples"
+
+
+def test_dng_examples_dir():
+    assert (
+        DNG_EXAMPLES_DIR == Path(__file__).parent.parent.resolve() / "examples" / "dng"
+    )
+
+
 def test_settings_base():
     assert settings.llm_api_base_url