Lightnings taking a ride

by ceinmart

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A camera that uses a tiny ("pinhole") aperture in a light screen (flange) as a lens.

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2
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2answers
4k views

Why does depth of field occur?

I wonder why depth of field occur in the first place. This is not a question about what changes the effect/size of field. We all know that. Aperture, Focal Length, Focus Length (distance to subject), ...
5
votes
4answers
711 views

What's the difference between vignetting and pinhole?

Sometimes people say that a lens has bad vignetting but it looks very similar to the effect of pinhole (darkened edges). What's the difference? If someone asked to have a vignetting effect (in PP) ...
15
votes
2answers
1k views

How to take extremely long (multiple month) exposure photos?

Was just going through an article where it was mentioned that Michael Wesely took a photo of a building being destructed and constructed and the shutter was open for 34 months. How is it possible to ...
6
votes
4answers
853 views

Are there any pinhole “lenses” available from lens manufacturers?

I know that it is possible to make your own pinhole, but do lens manufacturer's make pinhole "lenses" that include aperture data, etc? If so, who makes them?
6
votes
1answer
715 views

How to calculate the optimal pinhole size?

As far as I've understood, optimal diameter for pinhole size is calculated by formula where d - the optimal diameter for pinhole c - constant f - focal length (distance between pinhole and ...
6
votes
1answer
387 views

How can I shoot wide angle zone plate photography?

I like the look that is possible with zone plate photography. I've google around a bit and it seems that pinhole and zone plate photography on a DSLR, especially a crop body DSLR, results in medium ...