ok, I can't figure this out, hopefully someone here can help. I have had my new gx7 camera 3 weeks now, but have only experimented a little with it. (I work 3 weeks straight and so am not going out shooting). I have read through both manuals, and I would like to know what the difference is between: Constant Preview in the Custom Menu - the camera description says this is to "preview the aperture and shutter speed effects on the recorded image" Preview Function in the function button settings - I think this is the default function button 5 Also, the detailed manual says the function button setting will cycle through "no preview" to depth of field or "aperture preview" to shutter effect or "shutter speed preview" as you press the function button (I think). But when I do that, the message I get is "shutter speed effect off" or "shutter speed effect on" .......on further review the basic manual says the "Constant Preview in the Custom Menu" is for use in Manual exposure mode....so I guess that is why I see no difference as I haven't tried that mode yet...... If that is correct, I still have the question about the Preview function in the function button settings.