The distance between the lens front and film plane can be noticeably greater with LF cameras than with 35mm cameras.
Therefore is it necessary to take into account this extra distance when using a standard electronic flash on a LF camera?

To clarify, with 35mm the flash's GN = aperture x distance; where distance can be direct or bounced.
Therefore, with LF does the GN = aperture x (flash to object distance (bounced or direct] + distance from lens front to film plane)????

Or conversely is there a correction factor for the light loss due to increased optical path in LF versus 35mm camera????

regards

Tony