Thank you very much William W. I really appreciate the time and the attention you have given to my inquiry here. There is much to digest from your reply and I will likely kick up a few questions as a result, especially regarding the flash lighting that will be most sensible for my portrait and group portrait shots. I know my lens is 18mm-70mm f/3.5-4.5, per the Lightroom metadata description, but will verify the IF DX portion of the description when I get home to my camera. For the photos I have taken, I have been happy with the lenses results. Again I can't thank you enough for this wealth of valuable information.