I'm getting ready to set up a barrel lens for my 8x10 for my summer photography season. I was assuming I'd be ordering a Packard shutter once I decided on the lens. But if I find a lens that would only cost a little more than a Packard to machine onto the Copal 3 I already carry, I could avoid the bulk and cost of the Packard and an additional 5" lensboard, air bulb & hose, etc.
Plus I could just gin up a little box for the two groups of the long lens and avoid another big piece of Tupperware in my already large & unwieldy 8x10 backpack.
Others have occasionally mentioned this idea and people usually disapprove, saying that it's simply impractical, you accidentally expose with two mismatched elements, it's tough to remember which aperture scale to use, etc. But if you can avoid the weight of an Ilex 5 or Copal 3 in your bag, why not avoid it?
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