Canon RF 35mm F1.8 MACRO IS STM Instructions Manual page 15

9. Close-up Lenses (Sold separately)
Attaching a 250D/500D Close-up Lens enables
close-up photography. It provides the following
magnifications.
250D: 0.14 to 0.62x
z
500D: 0.07 to 0.56x
z
MF mode is recommended for accurate
z
focusing.
ENG-14