A common problem with many Nikon cameras, including the D90, is the tendency to over-expose and blow out reds. It’s especially obvious when shooting brightly colored flowers, like these.
Thanks to some good advice in Flickr’s Nikon D90 Club, I’ve been able to improve it a bit. Here I set it for spot metering using a red area and set it to underexpose -2.0EV. I would probably get even better results if I shot RAW.
If you look at the RGB histogram of the first image, you’ll see that the red channel is clipped.
Adjusting the exposure has a much bigger effect on the red channel.
