could damage be done to the camera if certain filters aren't used when they're preferable to be used?
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.