Check the listing for details. Lo Fi instant back for pinhole/creative camera: I-type, 600, sx-70 uses aaa. Listed at 325.00 USD. This is one of my custom "Lo- Fi" designs for your creative enjoyment. Use this back mounted on to an old camera to get an instant hybrid, or perhaps mount it to a box and make a pinhole camera! I have had customers who have done both- one used it to mount to a Graflex camera, and another used it to mount to a pinhole camera. This unit is fully self contained- meaning all you have to do is mount it and seal it- no wiring required! You can mount it with black tape, glue, or even bolt it on- it is up to you! It allows you to shoot Polaroid Originals I-type film, 600 film, and SX-70 film! It uses four aaa batteries, so the film doesn’t need an internal battery. This is handy with old film that may have a bad battery, and also the cheap and common I type film. The eject button is just a momentary switch so you just hold it down until the film is ejected and then release the button. This takes some getting used to, but by the 3rd pack I was perfect at it!The mechanicals strong- taken from low miles practically new cameras. I printed solid tops and bottoms with fill at 50 percent(much more than the average 20 percent fill that typical 3-d objects are printed). Note: The mechanicals are strong- taken from low miles practically new cameras, and tested fully with film.This, like all other backs that shoot i-1 film(including but not limited to cb-70 backs), gives you a mirror image. That means left is now right in the image. I personally like the effect, but there are some who don't. For other accessories, like ground glass, build plates, 2x3 holders, 4x5 holders, and type m backs, please check out my listings! About me: I am an artist, college professor, creative photographer, and maker. I sell mostly Polaroid cameras, shoot mostly analog, and love to hack things. I am and have always been a huge fan of the DIY movement. I have a blog called Lo-Fi and DIY com(lofianddiy). Note: I put 10 business days handling on my custom camera backs because I make them to order. I often come in at earlier than that time, but sometimes I experience a lot of orders(not complaining!), so I will likely need a lot of that time to get it built and shipped to you. Thanks in advance for your patience and understanding! Aaron