Scotch on the breath seems to cut through all kinds of contaminants on the lens.Actually, I use the LensPen and love it. It has a soft brush on one end and a polishing pad with cleaner on the other. Made specifically for camera lenses and available on Amazon.com. It has a clip so you can carry it easily in your shirt pocket.
Bill41 wrote:
Just remember that photo lens cleaning tissues (like the Zeiss) are best, in part, because they are designed not to affect the lens coating.
nothing like condensed C2H5OH ......
I still prefer a micro-fiber cloth and my breath - if the blower or brush fails.
On the other hand, maybe someone knows the chemical contents of the average person's breath and knows a reason it shouldn't be used? Is it affected by garlic and onions?