Switch needs to use lowercase variants.

server/apps/immich/src/config/asset-upload.config.ts

@@ -50,7 +50,7 @@ const logger = new Logger('AssetUploadConfig');
 
 function getMimeType(file: Express.Multer.File) {
   const extension = file.originalname.split('.').pop() as string;
-  switch (extension) {
+  switch (extension.toLowerCase()) {
     case 'raf':
       return 'image/x-fuji-raf';
     case 'srw':

web/src/lib/utils/file-uploader.ts

@@ -68,7 +68,7 @@ export const fileUploadHandler = async (
 
 function getMimeType(file: File) {
 	const extension = file.name.split('.').pop() as string;
-	switch (extension) {
+	switch (extension.toLowerCase()) {
 		case 'raf':
 			return 'image/x-fuji-raf';
 		case 'srw':