Who should I buy first, Longteng 1770 or Sigma 56?

1, the effect is good. Sigma 56 has a very good blur effect, which highlights the main body and has a very good picture quality. Longteng 1770 is not as good as Sigma 56.

2. There are many shooting options. Sigma 56mm is suitable for portraits, busts, landscapes, humanities, street sweeping, night scenes and dark scenes, while Longteng 1770 is not suitable for dark scenes.