Many people feel upset after they buy the Fresnel attachment included "Impact Fresnel Spot S-Mount Attachment" / "Aputure Fresnel 2X Attachment" / "NANGUAN NG-10X " for their flash lights...even use them with AD-600 Pro who come with a diffused glass cup over the flash tube, but the attachment(s) still project an omega shape (uneven light) in the bream.
Here is the setup, I tested and will produce good result
- Godox S2 (mount the round head flat to the mount, don't mount he AD200 body)
- Godox AD200 H200R
- Fresnel attachment
Hope this information help, happy shooting guys.