UPDATE: B&H sent me an email stating that the manufacturer is unable to give them an expected delivery date for the 58mm Genus ND Fader filter. So, I had them change the order to the 77mm one instead. On the one hand, I won't be able to use the filter with my 85mm f/1.8 or 50mm f/1.4 lenses. On the other hand, I will be able to use it with my 70-200mm f/2.8 L IS, 17-55mm f/2.8 IS, and 10-22mm f/3.5-4.5. Honestly, I will never use the ND on the 10-22. However, I look forward to using the Genus 77mm Fader ND filter on my other two zoom lenses.