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Old 14-04-2007, 07:11 AM
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Argonavis (William)
E pur si muove

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Pinhole camera tutorial

http://www.smh.com.au/multimedia/200...oto/index.html
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Old 14-04-2007, 07:33 AM
Ingo
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Thanks, it's a well cheap way of making a new lens for general photography.


Though it must be like F50
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Old 14-04-2007, 08:15 AM
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davewaldo
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Thanks mate,

Having done this a bit at uni I might just add something. Rather than using the needle to push all the way through to make the hole I found that you could get a far better quality hole by just making a dent with the needle, then using fine sand paper from the other side sand the dent until a hole is made. By doing it this way you have far more control over the size of the hole and also usually this technique gives a more round hole. It also makes the tin as thin as possible at the hole edge (important for minimising diffraction)

There are also ratios of hole diameter to sensor/film size which can be found on the net. A hole too small and you will get too much diffraction, too big and it will be softer than what is possible. I used a fine ruler and a kiddie microscope to check size.

But this all depends on how serious you want to get...

Enjoy,

Dave
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