greens and blues?

[shingfan]

how do you bring out the green of the grass and blue of the sky.....is circular polarizing the candidate?.....if so....which model and where can i buy a decent quality one........and when would be a good time and bad time to use it?

 

[Steph]

A polariser will usually increase the saturation of colours (including blue of the sky and greens of foliage) by cutting down glare and reflections. Its effect will depend on the relative positions of the subject, the camera and the light source. You can evaluate the effect of the polariser through the viewfinder on a SLR by rotating the filter and see for yourself if it brings something to the picture under various conditions. Just experiment. However, polarisers may give strange results with very wide angle lenses as the effect is not even across the whole picture.

As for brands, there are many of them. Have a look at Cokin, Hoya, Lee, B+W... Usually, the more expensive, the better the filter is.