>If so, what do you set the Focal length and Max aperture too?
You set it up just like a prime. As long as you are not using flash, the focal length that you plug in shouldn't matter unless you want the focal length in the Metadata and photo info display. If you have a constant aperture zoom it is easy. If you have a variable aperture zoom, you can plug in the aperture for the zoom range that you will be using and change it as required if you zoom in or zoom out.
If you will be using flash and/or zooming you could set up two or more Lens Numbers and set: #1 up for the wide end of the focal length and aperture setting, #2 up for a mid-range focal length and the appropriate aperture, #3 up for maximum focal length and the appropriate aperture. Then switch back and fourth between Lens Numbers as you zoom in and out. You could also change the data settings each time you zoom in or out.
If you are not using flash and don't mind stopping down the aperture when zoomed out, just set the focal length to what you think you will be using the most and the maximum aperture at maximum focal length.
Hey thanks for all the input everyone I just bought an old Vivitar T-4 75-260mm f/4.5 Tele-Zoom non-AI (1969) Tokina for $15.... The aperture ring DOES NOT protude beyond the face and therefore it mounted and functioned perfectly...oh wow what a blast!! Manually of course but my D7100 interprets perfectly after setting up the non-cpu data for it. The original owner used on a film Nikon and took care of it like gold. So much fun $15, real glass, Japan not China..the thing is a party... I found this conversation while looking for guidance about setting up the non-cpu data config...since the zoom goes up to 260mm and the fixed inputs are either 200 or 300 for focal length I was perplexed...guess I will set it for 300 for record keeping sakes...hehehe Can't wait to do some comparison shooting against my other lens Hey $15....if it shoots at all it was worth the effort...