Without daytime outside photos, anytime NOT recommended to use a CP Filter?

[onedownfiveup]

I'm going to be shooting family members this weekend for my sisters graduation and it will all be outside and I was wondering if I should use the CP filter.

[StewartR]

Probably not.

The CP will cut down on some kinds of reflections - from water, for example, but not from metal (e.g. chrome on cars). But you're shooting people, not boats or cars.

The CP will darken / saturate a blue sky if you're shooting at 90 degress to the sun. But I wouldn't think you'd want to be shooting people in the full sun (assuming it is sunny wherever you are).

The CP will knock 1-2 stops off your exposure. That could be an issue if the light's not too strong to start with, because you might have to bump up the ISO or slow down the shutter to compensate.

[DrPablo]

I would discourage CPs with very wide angle lenses, as they can have ugly effects. I would not use a CP under overcast conditions or sunrises/sunsets unless you're trying to eliminate surface reflections.

Like any filter, a CP can potentially soften or add flare to any image, so only use it if you need its effect.

[chris clements]

Not very useable for wide angle shots.
And I can think of numerous occasions where I want the reflections in the water/window/etc. to be part of my picture, and not to polarize them out.

[Mark_Cohran]

As others have said, CPL filters are used to remove glare and reflections from non-metallic surfaces, provide darker skies when shooting at 90 degrees to the sun, but it will do nothing to improve the graduation photos you plan to shoot.

Mark