Get original image url/path in magento

$productId = 'SOME_PRODUCT_ID';

$product = Mage::getModel('catalog/product')->load($productId);

$productMediaConfig = Mage::getModel('catalog/product_media_config');

$baseImageUrl = $productMediaConfig->getMediaUrl($product->getImage());

$smallImageUrl = $productMediaConfig->getMediaUrl($product->getSmallImage());

$thumbnailUrl = $productMediaConfig->getMediaUrl($product->getThumbnail());