More to explore:
grey card | BH Insights
Lally CAP White Balance Cap - I have one of these and love how easily it tucks into a pocket. Great for when your photo shoot takes you into a variety of lighting situations. (I just noticed that it says "discontinued." It may be available on eBay.)
Comparison of custom white balance from the lovely and talented Amanda Padgett! She makes me love my camera and Photoshop Elements!
How to set custom white balance
Photography :: White balance tips. ( Neutral grey card themeadowbrookblo... )
Фотомастерство - секреты красивых фотографий. Комментарии : LiveInternet - Российский Сервис Онлайн-Дневников
20 things I wish I knew about photographing in manual mode
White balance simplified. Lynne Rigby explains white balance in clear and simple terms.
Does your snow turn blue? White balance
How to Set the White Balance on a Nikon
Use White Balance to Correct for Color Cast | Boost Your Photography
White balance options on all current Nikon DSLRs (and tips for using them creatively)
White Balance Lens Cap - The simplest way to white balance your photos. No gray card required, nothing extra to carry with you. ($50.00, photojojo.com/store)