Depict Mahatma Gandhi leading the Dandi March in a photorealistic style, capturing the spirit of unity and determination. The scene should show Gandhi and his followers walking along a coastal road, holding banners and flags. Include the coastal landscape in the background, emphasizing the significance of the salt march. Focus on hyper-detailed textures and accurate lighting, soft vintage filter for a historical feel, slight grain effect to mimic old photographs, and selective sharpening to emphasize expressions and details, --ar 16:9