Don't forget that not every student prints full negative. Cropping an 8x10 negative then printing to 16x20 or 20x24 will take a little more extension depending on the percentage of crop.
On the other hand I have a 138S Durst converted to cold light in a darkroom with a seven foot two inch ceiling. The head is on the post about an inch under the ceiling for air movement. Making 20x24 prints I have never dropped the table its full range while using a 300mm lens. I have a 240mm to switch to, but have never needed it.
Last edited by jp80874; 11-21-2007 at 10:22 AM. Click to view previous post history.