Camera-building.

Torus34

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Joined

Aug 12, 2006

Messages

6

Location

Tottenville,

Format

35mm

• Jan 13, 2015

• #1

The next step up from a large [8x10] pinhole camera would be to use a simple lens of 'bout a foot focal length coupled with a shutter [Kodak Tourist?] and a diaphragm of, say, f128. That should produce a paper negative with a decided increase in resolution while shrinking exposures down from minutes to seconds and retaining the remarkable DOF of the pinhole rig.

Anyone gone there?

 

NedL

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Joined

Aug 23, 2012

Messages

3,390

Location

Sonoma County, California

Format

Multi Format

• Jan 13, 2015

• #2

You can look in the f295 camera building archives. It is a lot of fun and you can make nice paper negatives.

 

pdeeh

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Joined

Jun 8, 2012

Messages

4,765

Location

UK

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Multi Format

• Jan 13, 2015

• #3

There's quite a few threads in this very subforum about this, including one from me ((there was a url link here which no longer exists)) , so yes plenty of people have gone there.

 

TheFlyingCamera

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May 24, 2005

Messages

11,546

Location

Washington DC

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Multi Format

• Jan 13, 2015

• #4

Some of the resolution loss you're encountering with pinholes is also dependent upon the method of manufacture of the pinhole. A chemically etched pinhole can be remarkably sharp - see the Travelwide 4x5 65mm pinhole for an example. They start getting sloppy when you make the pinhole with a nail or other puncturing device. Lasers should also produce very sharp pinholes.