I was wondering if anyone had any info on the following lense: Goerz Dagor doubl e anastigmat 8-1/4" f6.8 in a Volute shutter. It is a lense I am considering to purchase and I was wondering if anyone had any info on it especially its cover circle. I want to use it with my 8x10. Also, what is a Volute shutter? As I a m new to large format photography any info. provided would be much appreciated. Also, anyone have suggestions for a lense (about 210mm) purchase that would cov er an 8x10 and allow for some movements, it would be primarily for b&w landscape photography. I am considering barrel lenses as well as those with shutters. P rice is also a consideration, looking in the $200-400 range. Thanks for any com ments.