![Any idea how to fix this? It's happening with my sigma 75-300mm lenses I haven't used it in over a year. I've cleaned it with a normal cloth by nothing is helping? : Any idea how to fix this? It's happening with my sigma 75-300mm lenses I haven't used it in over a year. I've cleaned it with a normal cloth by nothing is helping? :](https://preview.redd.it/48i1il42g2551.jpg?auto=webp&s=2905285506e2389b6cc123ea59b65e2cdcc2a0ae)
Any idea how to fix this? It's happening with my sigma 75-300mm lenses I haven't used it in over a year. I've cleaned it with a normal cloth by nothing is helping? :
![Amazon.com: blink-n-clean Lens Drops for Soft & RGP Lenses, 0.5 Fluid Ounces (Pack of 1) : Health & Household Amazon.com: blink-n-clean Lens Drops for Soft & RGP Lenses, 0.5 Fluid Ounces (Pack of 1) : Health & Household](https://m.media-amazon.com/images/I/71kxNw92MHL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: blink-n-clean Lens Drops for Soft & RGP Lenses, 0.5 Fluid Ounces (Pack of 1) : Health & Household
![Hand Using A Cotton Swab To Clean Camera Lens Contacts / Digital Camera Maintenance Concept Stock Photo, Picture And Royalty Free Image. Image 62173458. Hand Using A Cotton Swab To Clean Camera Lens Contacts / Digital Camera Maintenance Concept Stock Photo, Picture And Royalty Free Image. Image 62173458.](https://previews.123rf.com/images/weerapat/weerapat1607/weerapat160700468/62173458-hand-using-a-cotton-swab-to-clean-camera-lens-contacts-digital-camera-maintenance-concept.jpg)
Hand Using A Cotton Swab To Clean Camera Lens Contacts / Digital Camera Maintenance Concept Stock Photo, Picture And Royalty Free Image. Image 62173458.
![Amazon.com: Complete Blink-N-Clean Lens Drops For Soft Contact Lenses, 15 ml (Pack of 2) : Health & Household Amazon.com: Complete Blink-N-Clean Lens Drops For Soft Contact Lenses, 15 ml (Pack of 2) : Health & Household](https://m.media-amazon.com/images/I/71DHaVzEQ4S.jpg)