
EDIT: Personally I'd just go for a CPL filter and keep it on your lens at all times, taking it off when you don't need it. That way it doubles up as a protective filter but actually does something useful most of the time (considering most of the time you shoot outside a CPL will benefit).
This is a really, really bad idea. Using a CPL will cost you around two stops of light. Much better to use it only when needed.
Personally I can see little point in using a so-called 'protective' filter. The proper hood will offer better protection and will improve image quality. Here are the facts about UV/'Protective' filters:
* No UV/'protective' filter can improve image quality on a dSLR.
* All UV/'protective' filters will cause some degradation in image quality.
* The seriousness of this degradation tends to decrease as filter cost increases.
* Good filters will cause degradation that is not noticeable under most conditions.
* All filters, even the best, will cause noticeable degradation in some conditions.
This is a really, really bad idea. Using a CPL will cost you around two stops of light. Much better to use it only when needed.
Personally I can see little point in using a so-called 'protective' filter. The proper hood will offer better protection and will improve image quality. Here are the facts about UV/'Protective' filters:
* No UV/'protective' filter can improve image quality on a dSLR.
* All UV/'protective' filters will cause some degradation in image quality.
* The seriousness of this degradation tends to decrease as filter cost increases.
* Good filters will cause degradation that is not noticeable under most conditions.
* All filters, even the best, will cause noticeable degradation in some conditions.