Circular Polarizer Filter

[ultima16888]

as mentioned above I've used them in conjunction and it seems to have produce "glowing/ soft focus" look on high lights(reflections) where as when I tried shooting again using just CPL I'm not seeing the effect.. not so sure if using them both is causing this issue or it's just happened by chance, maybe someone can verify,

[chris medico]

You have to be careful stacking filters for a couple of reasons.


Reflections between the filters can degrade image quality (get good AR coated filters if you are going to stack).


Second you can start having trouble from the rings themselves causing vignetting.


In generalI use only one filter at a time.


If you are going to stack you need to test your configuration before hand to know if it has any negative impact on your image.