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Dear /p/, I'm working on a project to digitise old family motion picture film (both Super 8 and regular 8mm). For this I use my grandfather's old projector, which can be switched between S8 and 8mm. It has an attached lens which can be swiveled away, so there's nothing in front of the actual 8mm film except the film gate. It is supposed to then project on a Raspberry Pi camera attached to a Raspberry Pi of course. This takes an image every time a switch is pressed, something which is achieved by two contacts attached to a cog which makes one full rotation and thus one contact per frame, synchronising the camera to the film. A Python program then writes the image to an external HDD. I replaced the original light bulb (some high powered halogen lamp) with a high powered LED, because the slow speed necessary for capturing the images would otherwise burn/melt the film. All this is done (at least in an experimental setup), except the focus. I need the original image (height: 4,0mm) to be shrunk to an image height of 2,5mm. What would be the best way to do this? I have been struggling with this project for some time now and my aunt is getting pissy because she wants to relive her youth in the colonies or something, which happens to be captured on these films. I have tried calculating with image distance and focal lengths but either I'm really not seeing something obvious, or I made a mistake, because I can't get a sharp image that is smaller than the original. I figured /p/ would know a thing or two about lenses, so maybe someone here can help me.
Bad Photography Experiences
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Share your worst or most embarrassing experiences with street photography or photography in general. Fights, cops, dropping camera, ect.
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Camera-Specific Properties:Camera SoftwareAdobe Photoshop CS5 MacintoshImage-Specific Properties:Image Width1800Image Height1215Number of Bits Per Component8, 8, 8Pixel CompositionRGBImage OrientationTop, Left-HandHorizontal Resolution72 dpiVertical Resolution72 dpiImage Created2014:05:11 00:33:47Color Space InformationUncalibratedImage Width1215Image Height1800
/Gear/ - Gear Thread
71 more posts in this thread. [Missing image file: ]
Last one hit bump limit
Anything about Lenses, Cameras, mounts, Systems, buying, pricing, selling, etc. GOES IN HERE!
Don't open new threads for gear-related issues
No pointless (brand) arguments and dickwaving allowed! You have been warned! Just questions, answers and advice!
I repeat, ANYTHING GEAR RELATED goes in here!
And don't forget, be polite