Both halves of this image were shot at 5:33 and 5:34 PM using f2 1/80 ISO 100. The right shows my F707's white balance correctly calibrated to 100 IRE WHITE. The image to the left shows my white balance "adjusted" with Warm Cards Warm 1. I'm not sure I'm happy with the results of Warm 1, but it is interesting how it provides a much warmer- almost film quality- feel to the image. The standard white balance is very cold next to it. I'd be interested in a Warm 0.5 (not in my set of cards), the 1 is too extreme. I need to do some more tests to really see how it does.