Would a 90mm be the perfect lens for these types or portraits? Depending on the home I may just want to have the subjects in focus but not show to much of there home in the background. I imagine the Tamron SP AF90mm ƒ/2.8 Di Macro 1:1 will blur the background quite well. I have an 18-50 tamron but at 50 the bokeh is not burred enough for me. Opinions and thoughts would be helpful.