High resolution PDF instructions to make a guillotine shutter for vintage lenses.  This simple design is adaptable to lenses of all shapes and sizes.  There are two versions: the slip-on shutter, for larger lenses, and a lens-board mounted version, suitable for smaller lenses.  Both offer shutter speeds from 1/8-1/500s, powered only by gravity.  They are extremely accurate, reliable, easy and cheap to make.  In fact it's possible to make the whole thing from 3mm foamex (foam core plastic for sign-making), or even cardboard, in a couple of hours.  It will enable you to shoot film with any vintage 'barrel' lens.  These rarely come with mechanical shutters, and as a result can be very inexpensive.  Imagine having a vintage large format lens and shutter for under $50!  Designed by Pete Swann of Camera Eccentrica, who has shot hundreds of large format images with his own guillotine shutters on b&w and colour film (see www.cameraeccentrica.co.uk).  Over a period of four years he has made, used and refined the design of the shutter on lenses ranging from an 1850s Petzval, up to 1960s offerings from makers as diverse as Dallmeyer, Wray, Cooke, Ross, Lancaster & Sons, Ilex, Voigtlander, Zeiss, Fuji, Bausch & Lomb, Emil Busch, Derogy and more.