With our DSLR, indoor flowers come out detailed. Outdoor violet and blue flowers are detailed, too.
But outdoor bright red flowers give us problems. They come out as a single flat detail-less spot. Sometimes bright yellow flowers do this too.
Why? What we are doing wrong? Is it a camera defect?
In some of our pictures of red flowers, you can see small white reflections on the petals, but on other shots, the whole red flower appears flat, as one blob of same-color pixels, lifeless and volume-less. It is disturbing.
I am not asking how to to photoshop this image. The question is how to shoot correctly in the first place.
Condition: outdoor, sunlight, Nikon D5000, unresized, unprocessed jpeg.