for Nikon D70 / D100 / D200 / D300 / D700

The bag itself is a little deeper, front to back, than I would like so it's got plenty of room for my 3 week old setup. I've got the Nikon D70  Kit, 70-300mm G (hood on backwards), 50mm 1.4 and SB-800. Those are the biggies that inhabit the main compartment. I've also got some misc. items in there, USB CF card reader, USB camera cable, battery charger and SB-800 Speedlight accessories. In the front pouch I keep the holder for the 3 CR2 batteries, 3-CR2 batteries and 5-NiMH rechargeable. In the lid pouch I keep 3 - 512MB CF cards, 1 - 340 MB IBM Micro drive, CF PCMCIA card adapter and lens cloth. In the back zipper pocket I keep some manuals and paperwork.
 
If I end up with another lens I'm somewhat confident that I could fit another lens in the main compartment taking all the misc. junk out. I keep either the kit lens or 50mm on most of the time although I have been able to leave the Nikon 70-300mm f/4-5.6G on and still get the bag to close without feeling like I am really cramming it in there.

Update:

picture of my LowePro NOVA 3 bag with a big 'ol 80-200mm f/2.8 lens in it.

thanks to Arnold Sese for photos and comments.