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General Discussion => Hobbies & Crafts => Topic started by: sam on March 21, 2010, 16:17

Title: Print-your-own 35mm pinhole camera
Post by: sam on March 21, 2010, 16:17

http://blog.makezine.com/archive/2010/03/print-your-own_35mm_pinhole_camera.html

Quote

Francesco Capponi created this handy printable template (A4, unfortunately for U.S. makers!) for creating a pinhole camera using a roll of 35mm film. Both the template and instructions are found on Francesco's Flickr page.

Title: Re: Print-your-own 35mm pinhole camera
Post by: Rik on March 21, 2010, 16:25

I can remember making a pinhole camera as a kid, Sam, though using sheet film.

Title: Re: Print-your-own 35mm pinhole camera
Post by: Simon on March 21, 2010, 17:48

What would one be used for?  :dunno:

Title: Re: Print-your-own 35mm pinhole camera
Post by: Rik on March 21, 2010, 17:53

It's a camera which doesn't rely on a lens to focus the image on the film, instead using a tiny hole (aperture) to replace it. The big version, the camera obscura, was the precursor to cameras as we know them.

http://en.wikipedia.org/wiki/Camera_obscura

Title: Re: Print-your-own 35mm pinhole camera
Post by: sam on March 21, 2010, 19:25

and you can still get some pretty nice images.

Tis also a very good and safe way to observe the Sun.

Title: Re: Print-your-own 35mm pinhole camera
Post by: Clive on March 21, 2010, 22:43

A time-honoured method in fact.  You can see sunspots quite clearly when they are around. 

Title: Re: Print-your-own 35mm pinhole camera
Post by: sam on March 21, 2010, 22:50

indeed you can, nice simple experiment to measure the rotation rate of the Sun there too.

Title: Re: Print-your-own 35mm pinhole camera
Post by: Simon on March 21, 2010, 22:57

Now you mention viewing the sun, I realise where I've heard of them before.  :)

Title: Re: Print-your-own 35mm pinhole camera
Post by: sam on March 21, 2010, 22:57

probably some eclipse related show.

Title: Re: Print-your-own 35mm pinhole camera
Post by: Simon on March 21, 2010, 23:04

Probably the last 'proper' eclipse some years ago.

Title: Re: Print-your-own 35mm pinhole camera
Post by: sam on March 21, 2010, 23:06

1999 I guess. Oh how disappointed I was.  Still was worth a shot... one day I'll have to travel to see one.

Title: Re: Print-your-own 35mm pinhole camera
Post by: Clive on March 21, 2010, 23:14

Well worth it Sam.  I watched that Brian Cox astronomy programme last night which was about the total eclipse from India last year.  He's very good to be fair.  I had considered going to Easter Island to see this year's eclipse but the weather prospects are very poor in the south Atlantic in August and the island will probably sink with so many tourists crawling over it on the same day!

Title: Re: Print-your-own 35mm pinhole camera
Post by: sam on March 21, 2010, 23:16

I still get annoyed by his presentation. Especially having a particle person doing astronomy, surely there has to be a good astronomer out there who could have done the job!

Title: Re: Print-your-own 35mm pinhole camera
Post by: Simon on March 21, 2010, 23:18

I haven't see any of them yet!  The clips look interesting.  :)

Title: Re: Print-your-own 35mm pinhole camera
Post by: sam on March 21, 2010, 23:25

I've not watched any but I had a lengthy discussion with my mother about Enceladus today.

Title: Re: Print-your-own 35mm pinhole camera
Post by: Simon on March 21, 2010, 23:27

 :laugh:

Title: Re: Print-your-own 35mm pinhole camera
Post by: sam on March 21, 2010, 23:51

well it started off you know the tiger stripe planet... which I was completely confused about - but apart from it being a Moon indeed Enceladus is known for the tiger striping due to the tectonic plate activity.

(https://www.pc-pals.com/smf/proxy.php?request=http%3A%2F%2Fi71.photobucket.com%2Falbums%2Fi126%2Fweirdspaceman%2Fenceladus_cassini_PIA07800c16.jpg&hash=9443144d77db640ef82768443c3f8504fe159c79)


Credit: NASA/JPL

Title: Re: Print-your-own 35mm pinhole camera
Post by: Rik on March 22, 2010, 10:48

As you do... ;)