OT: lenses (High speed cameras)

On 3/10/2016 4:11 PM, Fred Cisin wrote: Don't forget Photo-sonic or Fastair bayonet. I've got about half a dozen of the cameras and many more of the lenses. they go to 4mm fish eye out. Amazing optics. Also the Fastax and Locam lenses as well. Fastax is the system which can do 40000 fps, and the Locam can do 2000 fps. The Fastax takes 1000' reels and the Locam take 100'. The Hycam is a 1000' beast as well. I have collected these but have never fired one in anger. I'd have loved to have run the Hycam I have. With the 1000' magazine, you get about three stripes on it because it takes about 1/3 of the length of the film to get to full speed. The 40000fps is accomplished by moving the physical film @ 10000 fps speed, and they have a patented twirling mirror that shoots 4 1/4 frame images onto the moving film as the film flys by. you get a pass at the end 1/3 of the reel, another pass on the middle 1/3, and if you are motivated, you rewind the film and shoot again on the last 1/3. Even with the fastest film you can locate, you have to have a huge amount of light on anything to make it show up on the faster speeds. The Fastair was made by Wollensak for Lockheed Missile. The Locam and Hycam were made by Redlake labs. They are still around and make Photometrics / Redlake digital cameras. They take C mount lenses (both the film and digital cameras) for the most part. Thanks Jim