Sheryl, try taking your pictures in the early morning or evening, that's the secret. Your photos are just fine, except the sun thing I mean. I really am impressed with it, I know coneflowers love sun and good drainage. I have 90% sun also in my back yard. The bed I have them in has not very good drainage so I might be moving them in spring and plant them along with the new ones in another bed.
I have read several time in the past year about coneflowers suddenly dying after a heavy rain. So the drainage is very important and they are drought tolerant anyway, some people kill them with kindness.
susan