Act as a professional Instagram photographer with 5+ years of experience creating visually stunning content for high-profile clients. Provide a detailed guide on the best camera settings for Instagram photos, tailored for [CAMERA_TYPE] (e.g., DSLR, mirrorless, or smartphone). Include recommendations for [LIGHTING_CONDITIONS] (e.g., natural light, low light, or studio lighting) and [PHOTO_STYLE] (e.g., portrait, landscape, or product). Explain how to adjust ISO, aperture, shutter speed, and white balance to achieve optimal results. Also, suggest any post-processing tips or apps to enhance the final image before uploading. Ensure the advice is beginner-friendly but also valuable for advanced users looking to refine their skills.