Carefully and with tender, unconditional love. Our cleaning guide has more practical steps.
Start by blowing and then brushing the offending debris with a soft-bristled brush. If that works, you’re good to go. Avoid using the cleaning cloth and lens solution if it’s not necessary. If required, carefully wipe the glass with the microfibre cloth provided and if the debris remains, apply some lens cleaning to the cloth and wipe the filter again in a gentle circular motion.