The 250D is suited for lenses with a focal length anywhere from 30 to 135mm. The 500D is geared for lenses with a focal length anywhere from 70 to 300mm
- Filter Type: Close-Up
- Diopter Strength: +2
- Circular Size: 72 mm Filter Thread
- Front Accessory Thread / Bayonet: None
- Package Weight: 0.465 lb
- Box Dimensions (LxWxH): 4 x 3.85 x 1.4"