I am currently using a EF 18-135mm. Lens attached to camera since day one, when i got it 2 months back. Don't knw how some dust got in to the internal. Is there away to clean it other then sending it to the service center?
Also I just bought a Hercules brand UV filter. Went back to the shop to exchange twice due to scratches found after cleaning with micro fiber cloth, and now the current new exchange pic same thing happen. Did anyone encounter such after you clean your lens filter? Will other branding (Kendo or Hoyo) UV filter also such poor quality?
Can kindly advise.