<p>I've recently got a G3 bellows hood for my RZ67 setup. It didn't come with the focal length ruler to adjust the hood length to correct size for each focal length. Does anyone have either a list of the correct extension lengths or a picture of the ruler they could post online? <br> I know I can do this by eye but I'd prefer to follow the ruler. I've searched online but can't find anything<br> I'll be using it with 50mm, 65mm, 110mm, 150mm, 250mm lenses<br> Thanks!<br> Dan</p>