Up for bid is a Sinar Auto Shutter DB. This is the rare F/4.0 version that lets you use faster lens. The listing includes the shutter, the shutter to rear standard cable, cable adapter that screws into the ground glass holder/back and The cable release. I have also included a instruction manual that is spiral bound. this is a reprint, but it has a wealth of information. Please take a look at the high resolution images to get a sense of this unit. I have also included an extensive video that shows this unit / it's operation. The camera body and lens in the video are not included in this listing (though they are available in my other listings). The shutter speeds sound pretty accurate, but you can use the video to access this. The reason I have listed it in this catagoy because sometimes after an exposure is made and the film holder is removed the shutter stays closed. you simply move the red lever up and press the red button in to re-open the lens. This isn't a huge issue, but I'm mentioning it in the interest of full disclosure. I'm not sure if this is because of the shutter or the cable that goes to the rear standard. It does not do this all of the time. I wanted to show it in the video, but couldn't get it to happen while filming. You could service the unit or attach this to your camera body of choice and get exposing film! The Sinar shutter is a must have if you are a large format shooter, it turns shooting with a view camera from being a tedious endeavor into a truly refined streamlined process. This unit fits "full size" Sinar cameras (P, P2,F,F2, C, & Norma, but not the P3). This can be used with 4x5, 5x7, and 8x10 variants of these cameras. Some have even adapted it to be used with other brands as well. Another great advantage of these shutters is the lens available for them are very high end, and end up being rather inexpensive compared to their equivalent "in shutter" equivalents. You can also easily modify vintage "barrel lens" and other experimental optics to be used with this setup. Please take a look at my other listings for more Sinar gear, I have a Sinar P2 4x5 camera, another DB shutter, 210mm, 240mm & 300mm DB lens, etc. I have a selection of other large format gear and high end gear as well. Please save me as a seller, I'm always updating my store with more gear. Good Luck, Happy Bidding.