Visualize a breathtaking autumn landscape in photorealism, showcasing a serene afternoon scene. The image centers around a winding river, where colorful canoes are anchored, their reflections shimmering on the water's surface. Surrounding the river, a lush jungle bursts with life, displaying a palette of golden yellows, earthy browns, and muted greens, interspersed with vibrant purples and soft pastels. The sunlight filters through the canopy, casting dappled shadows on the ground and illuminating the rich textures of the leaves. In the distance, majestic mountains loom, their rugged silhouettes softened by the warm glow of the afternoon sun. The composition should evoke a sense of peace and liveliness, inviting viewers to immerse themselves in the beauty of nature. Utilize natural lighting to enhance the colors and details, and apply a shallow depth of field to draw attention to the canoes while maintaining a soft focus on the background elements.