White and Grey Card for whiteballance

[CraziestOzzy]

I have found information regarding the use of white and gray cards very limited to the basics. I guess my question is, does anyone here use them during the course of a photo session and what is the optimal size and some detailed descriptions or links for their use? Also some idea as to where on the Ebay I could be directed to get a quality pair from...I have been checking out the China sellers and not sure of the quality as far as longevity is concerned. Thanks in advance

[A G Photography]

I use perfectpixels ones. They are cheap and easily found on eBay. Otherway you can also get lens clean tissues 18% gray, cheap and useful.

[piticu]

i've successfully used a 2x2" greycard, it shows enough in the picture to click on it. go for a big 8x10 kodak sheet and cut it in pieces - it should last a lifetime
ie Click here to see on Ebay

[CraziestOzzy]

thanks for the links...and the ideas.
Have been looking on the "bay" but could only get the Chinese ones...looks like the Kodaks are the go if I can get one