Re: Calibration Target Question
I would not recommend using those targets as practice material since they fail to meet Learn RV standards in multiple areas. Also, attempting to cue around the poor targeting issues seems unnecessary since there are a variety of options available to you within the LRV community (side note: when referring to the content of a photograph, I would suggest utilizing "site reference" instead).
Check out the Exchange Homemade Targets forum for practice material. viewtopic.php?f=20&t=7345viewtopic.php?f=20&t=7346viewtopic.php?f=20&t=2582
You could also create your own blind pool of practice targets with Kocmodpom's Excel TRN-CUE Generator: http://www.kocmodpom.com/
Or you could use RV Project Designer, which I created, to form a calibration target blind pool: http://www.thestateofreality.com/rv-project-designer