====== Negative scanner ======

This guide will be based on using the following Camera equipment:
  * Canon EOS 40D (but any Canon APS-C sensor size camera will work)
  * Tokina 90mm f/2.8 macro

===== Inspiration =====
[[http://www.diyphotography.net/scan-your-old-film-for-the-cost-of-a-happy-meal]]

[[http://www.johnamon.com/2010/08/how-to-copy-35mm-film-with-dslr-camera/]]

===== Equipment =====
  * 55-77mm step up ring [[http://stores.ebay.com/jiakgong-DIGITAL|Jiakgong]] (ordered)
  * 55mm pol filter (we only need the ring) [[http://stores.ebay.com/jiakgong-DIGITAL|Jiakgong]] (ordered)
  * 75mm PVC drainpibe
  * Dias film holder (getting a bunch from my dad)

===== What to do =====
  - remove filter from filter ring
  - calculate/measure length of PVC pibe to give a full 35mm film view (it's better to crop in software that to loose image)
  - cut PVC pipe to length
  - mount PVC pibe to the step up ring on the 77mm side
  - mount dias film holder to opposite end of PVC pibe
  - mount the pol filter ring between the lens and "scan unit"

At this point we are ready to go and just need some proper light and a few solutions may work:
  * LCD screen (laptop, tv or whatever)
  * soft box
  * ...

===== Measurements =====
35mm film strip at 15,20 and 25cm

{{:projects:photo:01-15cm.jpg?200|15cm}}

{{:projects:photo:02-20cm.jpg?200|20cm}}

{{:projects:photo:03-25cm.jpg?200|25cm}}

I'd say around 18cm tube will do the trick - the pol filter ring and step up ring will also add a little distance...