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Author Topic: Ein Superhyperspitzenbild ! Eine selbstgebaute Kamera!  (Read 1198 times)

ama

  • Jr. Member
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  • Posts: 1201
Ein Superhyperspitzenbild ! Eine selbstgebaute Kamera!
« on: June 10, 2009, 01:34:40 PM »




Ein Superhyperspitzenbild !!!

Warum  Superhyperspitzenbild?

Antwort: Weil es mit dieser "Kamera" aufgenommen wurde:



Das ist ein umgebauter Scanner!

Zitat:

[*QUOTE*]
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For the lens, I used an obsolete 35mm F/2.8 screw mount SLR camera lens. The lens is so obsolete, its even predates the Pentax screw mount (which I still use). The lens has no anti reflective coating, and, a completely manual aperture - that is, it even predates the automatic aperture reduction when the shutter is released. Its entirely manual. Perfect for the job.

I mounted it to the CCD by cutting a slot in a block of wood. On the back side, I mounted the scanner's PCB with the linear CCD. On the front side, I mounted a lens cap (with a hole cut in it) to the wood, and screwed the lens into that. Surprisingly, from my rough calculations, I got the lens within .002" of the right distance from the CCD for the focusing scale to be correct. Careful sanding corrected the rest of the error.

The lens and CCD assembly is rotated on two metal points, which poke into small holes in the the wooden frame from the top and bottom. The points are just the tips of screws, which are of course easily adjusted.

This method of scanning does cause the perspective to be more 'cylindrical' than rectilinear, but for most shots, it's either not noticeable, or not bothersome. To get rectilinear perspective, I would have to move the CCD in a straight path while leaving the lens fixed in position, and that wouldn't be easy to do with simple means.
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[*/QUOTE*]


Da geht es lang für begabte Bastler:

http://www.sentex.net/~mwandel/tech/scanner.html


... und die Anderen gucken staunend zu... :-)

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« Last Edit: June 10, 2009, 01:36:10 PM by ama »
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Kinderklinik Gelsenkirchen verstößt gegen die Leitlinien

Der Skandal in Gelsenkirchen
Hamer-Anhänger in der Kinderklinik
http://www.klinikskandal.com

http://www.reimbibel.de/GBV-Kinderklinik-Gelsenkirchen.htm
http://www.kinderklinik-gelsenkirchen-kritik.de

Rastapopoulos

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  • Posts: 317
Re: Ein Superhyperspitzenbild ! Eine selbstgebaute Kamera!
« Reply #1 on: March 01, 2021, 08:35:27 AM »

Marke 1000

Matthias Wandel ist absolut SPITZE!

https://www.sentex.ca/~mwandel/index.html
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Venceremos!
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