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Showing posts from March, 2013

iPad Enlarger Project

I had recently read how someone had placed their iPhone into an enlarger and printed photos from it. I don't have an enlarger so this got me thinking. Can I use an iPad as both the light source and negative?

Well I had an old Deckel-Munchen shutter lens assembly I picked up on eBay. It is quite fast at f2.9 and comes from a medium format 6x9 cm camera. Now the iPad screen is quite a bit bigger than this but large format lenses are very expensive. I would be operating the lens near its limits. Since the lens has a diaphragm and shutter it is self-contained in terms of image brightness adjustment and ability to time the exposure. Since paper is slower than film the plan was to operate the shutter in B or bulb mode with a cable release. The lens also has a focus adjustment for fine focusing.

Another impact on image quality is of course pixels on the iPad. The retina display however features 264 pixels per inch which is very close to the 300 dpi minimum recommended for di…