D70s Pinhole

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D70s Pinhole

Postby spaz on Sat Apr 28, 2007 5:31 pm

I created a pinhole "lens" for my camera, here are the results after lots of trial and error. Both 30s at what I estimate to be somewhere between f/60 to f/120. The colour rendition is incredible as is the contrast and gradation between tones - if only I could get it sharper I would sell all my glass :P

Does anyone know how I can get the camera to take a light measurement for the shutter speed? I imagine it would be the same as using a lens that requires manual setting of the aperture.

ISO 200
Image

ISO 1600
Image
http://www.50mmprime.com

D70s | 50 1.4 | 85 1.4 | 18-70 | 70-300 ED | Pinhole | SB800

POTW 24.04.07 - thanks Geoff
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Re: D70s Pinhole

Postby Gordon on Sat Apr 28, 2007 6:28 pm

spaz wrote:Does anyone know how I can get the camera to take a light measurement for the shutter speed?


Just set your camera to A and it should display the shutter speed, assuming its less than 30s, otherwise it will have Lo displayed...assuming its the same as my D70.

What size pinhole did you use? I think you should be able to get it a bit sharper with a very small hole. I did a few pinhole photos with my FE2s years ago and they were reasonably sharp, I just used Aluminium foil over the lens with a very fine pinprick hole.
D70, D200, CP5700
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Re: D70s Pinhole

Postby Yi-P on Sat Apr 28, 2007 6:49 pm

Gordon wrote:
spaz wrote:Does anyone know how I can get the camera to take a light measurement for the shutter speed?


Just set your camera to A and it should display the shutter speed, assuming its less than 30s, otherwise it will have Lo displayed...assuming its the same as my D70.


The D70 cannot meter without a lens with meter coupled CPU.

It will refuse to fire the shutter at A mode if it cannot detect the lens, you need to use it on M mode in this instance.
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Postby Gordon on Sat Apr 28, 2007 6:51 pm

I was talking about putting a pinhole over the lens, but as Yi-P says no metering without a lens
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Postby Yi-P on Sat Apr 28, 2007 6:54 pm

Gordon wrote:I was talking about putting a pinhole over the lens, but as Yi-P says no metering without a lens


It defeats the point of calling it a 'pinhole' camera if you use a lens on top. The idea of pinholes are not to have an optical element but very small hole to concentrate light into the film plane (or sensor this case).
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Postby Gordon on Sat Apr 28, 2007 7:11 pm

maybe, but pinhole *never* "concentrates" the light! A pinhole in front of the lens will give you a much smaller aperture than the lens can ever do, but yes, you do have the advantage of the lens focusing the light still.
In the same vein, using a digital camera sort of defeats the idea too, the original pinhole cameras used emulsion! ;)
D70, D200, CP5700
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Re: D70s Pinhole

Postby Yi-P on Sun Apr 29, 2007 12:14 am

spaz wrote:Does anyone know how I can get the camera to take a light measurement for the shutter speed? I imagine it would be the same as using a lens that requires manual setting of the aperture.


Anyway, back on topic now :)

You may find this interesting to know:

http://www.pinhole.org/make/exposure.cfm

:D
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