I just came back from a trip and I've noticed that my 50mm has some consistent dust particles.
I've blown air and cleaned the front external element with a smooth cloth very gently, but particles are still present.
The back element seems pristine in condition and very clean. This is a year old lens that have seen regular action but not as much.
Do you guys think that I need to send it to get it service ? Are there any options to get the particles removed ?
Thank you for any help!