21 Jun 2017

The home-brew return of anamorphic

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Aamorphic: images with visually unique characteristics since the dawn of cinema Aamorphic: images with visually unique characteristics since the dawn of cinema Dr. Verbel'

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Optically stretching images to make a wider aspect ratio is back in a big way thanks to the internet. Adam Hamer investigates.

DIY communities have sprouted up on the web, dedicated to helping intrepid camera operators and photographers try their hand at creating custom hybridized anamorphic rigs. These rigs offer a budget friendly, anamorphic solution for independent filmmakers. The availability of the internet has allowed communities based on user feedback to thrive in the modern world and has led to a direct revival of a complex optical system.

Anamorphosis is a process that can be created using a variety of optical elements in a classical configuration. Configuring these multi-part modern anamorphic hybrids, photographers use vintage projector lenses, clamps and a variety of different focusing diopters to construct custom anamorphic rigs. Utilizing the community-oriented nature of the internet, a feedback based forum system has led to the accessibility of the anamorphic format on an independent level.

Anamorphic cinematography originated in the early days of cinema. As studios sought out new ways to further define their films as spectacle events to the audiences of the time, they invested in new cinematography methods. Enticing audiences through new technology in exhibition, they could draw a larger crowd and emphasize that their film offered a truly unique experience to prospective audiences. The studios spurred on a massive scale, industry-wide adoption of the anamorphic lensing of feature films.

Anamorphic cinematography bends light through optics to spatially compress a scene onto an image plane so that it can be captured on an analogue or digital emulsion. This image compression, or squeeze factor, allows for a wider picture area to be imaged on the same sized capture area. The anamorphic negatives formerly were printed with the squeezed image intact onto the film and then correspondingly exhibited to the public through an anamorphic projector, which optically de-squeezed the image rendering the 2.39:1 aspect ratio or the classic anamorphic frame.

Anamorphic benefits

It is easy to see the benefits of shooting anamorphic. By compressing space horizontally and leaving it virtually unchanged vertically, anamorphic glass creates images with visually unique characteristics. .Anamorphic lenses come in a variety of different squeeze factors from 1.33x to 2x. Many modern digital professional cinema cameras have an internal de-squeeze mode to display and record the format in the proper, ultra wide field of view.

Anamorphic lenses produce characteristic streaking flares and ovular out of focus highlights. Depth of field is complicated as a result of anamorphic optics, as the physics of the lenses can distort the representation of physical space. As a result of this distortion, Anamorphic lenses tend to produce an ovular field of sharp focus in the central portion of a particular frame. The shape and size of this zone of optimal focus should be carefully factored and tested before any production when lensing anamorphic. DIY anamorphic rigs not only possess the same depth of field distortions as lenses in unibody housings, but also require dual focusing systems. On custom rigs, both the taking lens and the front focusing element for the projector lens need to be calibrated to ensure each shot is in sharp focus. This need to adjust and monitor two lenses to achieve optimal focus renders great technical challenges to the creators of custom anamorphic rigs.

Creative builders have turned to the internet and reverse engineered the basic design of anamorphosis themselves, building epic franken-rigs from old projector lenses which were once used in picture houses all over the world to showcase studios’ prestige pieces. These projector anamorphs are made by some of the world's finest lens makers and unsurprisingly, are becoming less readily available as word spreads of this growing, forum based community. Bell and Howell, Kowa, Schneider Kreuznach, Iscomorph and Lomo are commonly purchased projector lenses which are then combined with additional optical elements to produce truly functional anamorphic lenses. The projector lenses are often sourced from online auction websites and from private vendors. As word spreads about the availability of projector lenses, the market price has increased drastically.



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