I have an opportunity to try an Epson V700 to see how it compares to my camera scanning workflow. The catch is the scanner does not have templates (either Epson or Better Scanning). Obviously I'd want to use the high resolution lens. Is this lens mechanically triggered by the templates, in other words, it only is used if a template is mounted triggering a sensor or switch? Or is it as simple as choosing the "film holder" rather than "film guide" setting in the software? I'll be using VueScan.