Update README.md

Author: pixelogik

README.md

@@ -1,3 +1,6 @@
+
+![photon](https://github.com/user-attachments/assets/207d65ca-114b-4fb7-88da-b002a4943941)
+
 # This is Photon
 
 My little raytracer, written in Rust, was created to gain first experience with Rust. It was fun 🤖
@@ -17,3 +20,14 @@ The output image is being written in the text format PPM to the standard output
 ```
 cargo run > image.ppm
 ```
+
+# Output
+
+You can easily change the geometry (as long as you want spheres or planes) and the light configuration in main.rs as well as raytracing parameters like 
+- number of rays per pixel (monte carlo sampling, average value is taken)
+- number of rays for each global illumination computation on a surface hit point
+- resolution of output image
+
+This is what it renders with the current configuration:
+
+![output](https://github.com/user-attachments/assets/fd2a88be-3d56-4365-8ebf-93d1f728c6ac)