There are literally thousands of such cameras on the market today varying in price from a few dollars to a thousand dollars. Such cameras are successful for what they are designed to do, but for those of us interested in good flower photography, the use of automatic cameras may not give the best results. Consider, this situation. You have a white or highly coloured flower There are many orchids like this. You want to make the photo stand out, so you use a black background.
Most automatic cameras calculate the exposure by averaging over the entire image.
They measure the white flower, and then also try and measure the exposure of the black background. The result generally will be that the white flower will be seriously overexposed, all detail of the flower will be lost and the result will be disappointing. Incidentally, if you do get a spot measuring camera, ensure that the camera also has the facility to remember the exposure because usually the measurement is taken at a very precise point and for composition reasons you may not want to place the position of the flower at that point. To overcome this problem with the majority of such cameras, you need to ensure that you can control the exposure and aperture manually. Most of the modern automatic cameras with their computer chips do allow for this, but their exposure measuring modes may not be suitable as noted above.