Very often we see comments/critique here on CiC regarding bright BG or bright objects in the BG. Well I recently took a couple of flower shots that I believe demonstrate, to some degree, why it is often recommended to avoid bright BG. As with any rule their are exceptions and I'm not suggesting otherwise. In fact I took the backlit shot specifically because I thought this would be a case when breaking the rule would work. Maybe not.
There are other differences in the lighting other than just the BG. But I thought these two shots are instructive. Click to open in the light box and toggle back and forth for best demonstration.
Nikon D810, 70-200mm f4 @ 200mm
1) dark BG; 1/500, f5.6, ISO400
2) bright BG; 1/1000, f5.6, ISO400