What is the difference between Gaussian Blur and Lens Blur, and when would you choose each?

• A. Gaussian Blur applies even blur; Lens Blur simulates depth of field with a blur model and can use depth map.
• B. Lens Blur is faster and simpler; Gaussian Blur simulates depth of field with depth map.
• C. Gaussian Blur sharpens edges; Lens Blur blurs color channels.
• D. Gaussian Blur reduces noise; Lens Blur increases noise.

Answer: (C)