amfoto1 wrote:
Yes. That will work fine.
Any clean, lint free rag will do. Doesn't need to be microfiber, thought that will work.
Cheap isopropyl "rubbing" alcohol works fine, too.
May or may not solve the problem, though. Sometimes that error message is due to some other interruption in communication between the lens and camera. But, cleaning the contacts is a an easy, DIY fix that might work. You never know, until you try.
Rather than "Rubbing alcohol" which is about 80-90% water, try "boat stove" type alcohol. It is very volatile & flammable so don't use it around any flames but will not harm the plastic around the contacts. Just use a damp, not dripping, rag. It's available at most hardware & paint stores, & Wal-mart as well as marine and camping stores.