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Martin Hong

Aliasing / Moire Solution for Canon 5D MarkII

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Mosaic Enginnering has develop this filter that fits inside Canon 5D MarkII. The VAF 5D2 filter consists of multiple layers of birefringent optical material including lithium niobate and crystalline quartz.

 

PRZY-1000231A-344px.jpg

 

PRZY-1000237A-344px.jpg

More details reposted from the official website:

http://www.mosaicengineering.com/products/vaf-5d2.html

 

Optically corrects most aliasing and moiré artifacts in 5D Mark II HD video.

No reduction of 5D Mark II 1080p video resolution for most lenses.

True optical correction before video image capture – no postproduction software filters or processing.

Easily installed or removed in less than 20 seconds.

5Dmk2 H.264 codec compresses with better quality with the VAF-5D2, because false, high-frequency, aliased image components are eliminated before compression.

 

MSRP $385 (USD).

 

Four Examples of Aliasing:

 

(http://www.vimeo.com/26299355)

This video illustrates the effectiveness of the VAF-5D2 at mitigating the well-known, severe aliasing artifacts produced by the 5D Mark II when photographing fabrics, architectural patterns, and other subject matter with fine detail. Note that this video has been cropped to 720p, rather than resized from the original 1080p, so that the full 1080p resolution is retained within the cropped field of view. The full-frame 1080p video and the original unmodified 5D2 camera files are available at http://www.przyborski.com/mosaic_downloads.html.

 

Zoom Lenses (

)

This video specifically demonstrates the performance of the popular Canon 24-70mm f/2.8L and 70-200mm f/2.8L IS zooms with the VAF-5D2. Again, the full-frame 1080p video and the original unmodified 5D2 camera files are available at http://www.przyborski.com/mosaic_downloads.html.

 

Wide-Angle Lenses (http://www.vimeo.com/26764997)

For certain lenses of about 24mm FL and wider, the VAF-5D2 can induce some softening at the outermost edges of the field of view, especially with wide apertures. Nevertheless, and depending of course on scene composition, these lenses often remain usable with the VAF-5D2 in many typical situations. This video was shot with the Canon 24mm f/1.4L and 35mm f/1.4L lenses as a demonstration. Once again the full-frame 1080p video is available at http://www.przyborski.com/mosaic_downloads.html.

 

On-Air Commercials (http://vimeo.com/27069461)

These two on-air, regional TV commercials were shot using the VAF-5D2, and show what can be achieved with 5D Mark II. Again the full-frame 1080p video is available at http://www.przyborski.com/mosaic_downloads.html. Courtesy Eat'n Park Hospitality Group, Inc.

 

Demo; Installation and Removal (

)

This is a short informational video introducing the VAF-5D2, and illustrating its installation into and removal from the Canon 5D Mark II. (Note that this video was not itself shot with the 5D2.)

 

lens.case-wo-filter.jpg

Fabric lens case in 5D Mark 2 1080p video;

600×400 pixel crop from 1920×1080 frame.

lens.case-w-filter.jpg

Identical lens, aperture, and imaging conditions,

but video acquired with VAF-5D2 filter.

 

carpet-wo-filter.jpg

Office carpeting in 5D Mark 2 1080p video;

600×400 pixel crop from 1920×1080 frame.

carpet-w-filter.jpg

Identical lens, aperture, and imaging conditions,

but video acquired with VAF-5D2 filter.

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