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Large Petzval Lens

8 inch long A T Thompson, Boston Magic Lantern Lens (Darlot France) test after sunset.
I was trying out the big Petzval. It is such a bright lens that I needed to wait till after sunset in the shade to take photos. It is too big for my regular ND filter, so I'll nee… http://largesense.com/blog/2015/05/large-petzval-lens/