Yes, I’ve encountered the same issue before. Even though you're uploading 4K images, Magento can still compress or resize them during the upload process, which affects the quality. To improve this, you should first check your Magento image compression settings and ensure they aren’t reducing the quality too much. Additionally, it's a good idea to optimize the images before uploading them using tools like TinyPNG or ImageOptim, which can compress images without significantly reducing their quality. If you’re working with clients who also do wedding photography and videography, it’s crucial to maintain high-quality visuals for those projects too. Make sure the images match the dimensions required by your theme, as Magento might scale them in ways that affect clarity. Using the WebP format can also help maintain high quality while reducing file sizes. Lastly, clearing your Magento cache and browser cache might ensure that only the updated, high-quality images are displayed. These steps should help you improve the image quality of your jewelry products.