Not unless you are talking about protection from physical accidents like dropping the camera/lens or poking it with somthing. This is why many people use UV filters. If you drop your lens onto the ground, it's much better to replace a $50 filter than a $1000 lens.could damage be done to the camera if certain filters aren't used when they're preferable to be used?
Personally, I think that's a load of cr@p. 'Digital' is just being used as a catch word for marketing and sales.One other quick thing (and I've heard both sides, so it comes to personal believe); digital camera sensors require filters made for them (e.g. Hoya Pro 1 Digital, or Promaster Digital, etc...). I've heard clerks in camera stores that isn't necessarily true, but I still stick with digital coating for digital sensors.