ok this might sound like silly question for the more experienced flash gurus among us but here it is anyway ..

Lets say Im using off camera strobes and a zoom lense, my lens is a 18-70 and I am at a focal length of 35mm and my shutter speed is set at 1/125th. I take an incidental meter reading with a handheld meter and the right exposure is for eg. f11 ..

Now my question is if I start shooting pictures at the correct exposure and start zooming my lens and changing focal lengths, will this affect the exposure ??