Avoid
- licking the lens!
- Using a beer coaster!
- Your sleeve.
Use
- A good blower. (rubber not plastic!) I have a Pho-Tech black blower about the size of an orange. It has a removeable nozzle so it packs up quite well in the bag. Surprsingly I bought this blower in New Zealand. I guess they can't be without good blowers over there!
- A microfibre cloth. any will do. I have used a canon branded one for a while now and it works a treat. I really should get another as a back up.
- Buy the skylight filter to go over the front of all your lenses. Works a treat for those accidental fingerprints on the lens itself!
Just go into your local reputable camera store and they'll have the goods!
David.M.
p.s. Failing that Nige, just do a search (which I hope you already have done) on dpreview.com. I'm sure they have heaps there!