ImagesController 中 store 方法中 new Image 为什么不用依赖注入呢？

ImagesController 中store方法中

public function store(ImageRequest $request, ImageUploadHandler $uploader)
{
    .
    .
    $image = new Image();
    $image->path = $result['path'];
    $image->type = $request->type;
    $image->user_id = $user->id;
    $image->save();
    .
    .
}

public function store(ImageRequest $request, ImageUploadHandler $uploader, Image $image)
{
    .
    .
    $image->path = $result['path'];
    $image->type = $request->type;
    $image->user_id = $user->id;
    $image->save();
    .
    .
}

这两种写法有什么区别？