<p>I currently have the AE Prism Finder for the Mamiya 645 Pro TL and thanks for explaining the Sports Finder system. I just use reading glasses at 1.5 magnification, so I'm concerned that if I buy the WLF with the wrong diopter setting, then I will have to probably take my glasses on and off.<br>
<br />What Diopter setting should I purchase with the glasses that I currently have? </p>