hummm... we need to know if you shot Color or B/W... and what kind of Camera you have. anyway... this would be my choice: Black and White: a) Yellow-Colored Filter (gives a lot of sharpness to the image. Gives character to the clouds. b) Red-Colored Filter (gives extreme results in contrast terms. Useful to obtain a MoonLight effect in full daylight; useful in places where you need to contrast a very far landscape.) c) Green-Colored Filter (Gives results similar to the Yellow Filter but gets more details in the grass.) d) Polarizer (a must to have in every situation. The most important filter you can get. Buy a circular one. Eliminates the reflexes of the mirrors and in general of all reflective surfaces. Helps to darken the image in High Light conditions. As a side effect steal some light, so don't use it in low-light situations.) COLOR: a) Polarizer (as above) b) SkyLight ( it's a polarizer-type filter. Eliminates the blue-dominance of the shots taken in mountain or sea. Particoulary useful to suppress the cold dominances due to flash use. c) Warm Filter (exist in many colors, cokin for example has 3 models. I suggest the darker one ,cod 028. Helps to conform the colors and usually gives a softer look to the pic. Useful when used to shot people. Gives great great great results on the sand.) d) Sunset ( useful to give character to a sunset; soften the violent colors or lights and gives a red/orange dominance. Can comes in handy when shot landscapes or cityscapes to give a warmer look) e) Diffuser (particoularly useful to eliminate skin imperfections on a human subject. Comes in handy if you plan to shot nudes or portraits.) f) Basic Filter (well... this is not a filter at all... it is a piece of glass particoularly clear. you can intervene on this with colors or vaseline to make filters on-the-fly... (poor fly...zzzZZZzzzZZzzz) useful in many situations. It's a tecnique used in the past. i've get good results with it. anyway... many effects obtained by this tecnique can be reproduced with photoshop...) Hope to be useful... =) ..:: Loki ::..