What follows my cleaning workflow:
1. Blow the bellows - away most of the dust.
2. Larger remaining specks of dust with the brush wegpinseln.
3. remove residual dirt (eg fingerprints) with the cleaning tip
Advantages of the Lenspen:
Brush bristles very soft.
Cleaning tip actually does not dry out. For heavy dirt I breathe in addition briefly on the lens.
Cleaning tip cleans even properly even after a year and intensive use.