Originally Posted by scottyb70
Do you measure from the front of the lens or at the film plane when you are trying to adjust the front focus lens? With the rangefinder is it to the front or back.? I am adjusting my agfa isolette.
The accepted standard is to measure from the film plane. If this is an Isolette V, an Isolette I or an Isolette II that we're talking about, then this is very important -- particularly if you need to measure distances (for example if you are shooting head-and-shoulders portraits with the aperture wide open then you will need to use a tape measure to get the focus just right). However, if you have an Isolette III or a Super Isolette, then (as Chippy says) it isn't important -- just make sure the rangefinder and lens agree.