the photoshooter's journey from taking to making

Posts tagged “lensless photography

THE OTHER SIDE OF SOFT

A side-by-side comparison of the two main systems of “lensless” photography, the pinhole and the zoneplate.¬†

By MICHAEL PERKINS

PHOTOGRAPHERS (AND HUMANS IN GENERAL) ARE CONTRARY. Tell them they’re forever stuck with a bones-basic camera and they’ll spend every night and weekend either trying to devise a more sophisticated device or work three jobs so they can buy one. And the obverse is also true: present shooters with an infinite number of hi-tech choices designed to deliver unprecedented precision, and they’ll perversely start to pine for the “lost innocence” or “authenticity of the bare-bones rig.

What else can account for the recent surge in lensless photography, and the creation of images with cameras that are more technically handicapped than even one’s first point-and-shoot? Of course, the very first image capturing was done without a lens, with the ancient Greeks creating pictures on the inside back panel of a camera obscura box, using nothing but a small pinhole to generate a dim, soft-focused image of the chosen subject. The early nineteenth century replaced the hole with custom-designed glass optics, and photography moved quickly from a scientific experiment to a global rage.

Zoneplates create a dreamy, hazy over-layer on top of lensless cameras’ typical soft focus.

But, of course, for photographers, no part of their art’s history is really “past”, and so we now see a small explosion of new pinhole devices for both film-based and digital cameras, from specially manufactured pinhole body caps (used in place of a lens) to cardboard kits available as DIY projects to recently dedicated pinhole plug-in optics for the Lensbaby series of lenses. The idea remains the same: small apertures, virtually infinite depth of field, soft focus, and looong exposures.

The other variable in this craze is the popularity of zoneplates, which, unlike the refracted light in a pinhole, works with more ¬†scattered diffracted light, creating a halo glow in the high contrast areas of subjects, as if the soft-focus is also being viewed through a gauzy haze. A zoneplate is really like a bulls-eye target, a plate where both opaque and transparent “rings” combine to disperse light widely, delivering a dreamier look than that seen in a pinhole image. The other big difference is that a zoneplate has a much larger light gathering area and a wider aperture, so while a pinhole opening might equate to a stop as small as f/177, the zoneplate could be as wide as, say, f/19, making handheld exposures (and visualizing through a viewfinder) at least feasible, if tricky.

Of course, both kinds of lensless imaging are extremely soft, rendering a precise depiction of your subjects impossible. However, if light patterns, shapes, and mood outweigh the importance of sharpness for a certain kind of picture, then pinholes and zoneplates are cheap, fairly easy to master (you don’t have much control, anyway), and a little bit like stepping back in time.

It’s contrary….but ain’t we all.