Enhancing Motion Picture Lens Performance by Digital Calibration and Correction

Metadata

Publisher: SMPTE — White Plains, NY
Doc Type: Conference Paper
Content Type: Original Research
Volume: 2010, No. 10, pp. 1–9
Abstract: To some degree, all lenses used by the motion picture industry exhibit certain distortions which can detract from the ideal viewing experience. This paper presents a lens calibration and correction system which enables these problems to be resolved digitally in post production. For some time lenses such as the Cook 4i and now 5i provide the necessary metadata on focus and aperture settings to enable digital post corrections to be applied. Cameras such the Alexa and RED are capable of capturing this metadata. Many other lenses however may be adapted to provide the necessary metadata by means of a simple encoder. The paper presents how this is achieved followed by a presentation of the digital correction system for enhancing such scenarios as extreme focus pulls. Using digital high definition camera systems the calibration of each individual lens is presented along with the automatic derivation of the required lens database. The full post production work flow through to final image generation is presented.
Publication Date: 2010-10-01
DOI: 10.5594/M001356
Link: https://doi.org/10.5594/M001356
Author(s): Christopher C. Woollard
Keyword(s): Metadata
Copyright: © 2010 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1. Panavision website: In Frame: Honoring our own. EXTERNAL
2. Neil I. A. , “Review of Recent Zoom Lens Developments for 35mm Cinematography at Panavision” , Optical Review Vol. 8 No. 4 2001 . EXTERNAL
3. Clairmont D. , “Cine-style lenses for video cameras” , Broadcast Engineering , 2003 . EXTERNAL
4. Cooke Optics , http://www.cookeoptics.com/cooke.nsf/products/itech.html . EXTERNAL
5. Chrosziel GmbH, Product Catalog 2010 p64. EXTERNAL
6. Tian H. , “Study on the Effect of Object to Camera Distance on Polynomial Expansion Coefficients in Barrel Distortion Correction” , Fifth IEEE Southwest Symposium on Image Analysis and Interpretation, 2002 . EXTERNAL
7. Woollard C.C. , “An Object Server Supporting Metadata for Video Intensive Internet-Based Access” , Journal of the SMPTE , November 2001 Vol. 110 No. 11 . EXTERNAL
8. Sturm P. Ramalingam S. , “A generic concept for camera calibration” , Proc. ECVV, 1998 . EXTERNAL
9. Woollard C.C. , “A Verification System for Cinematographer Image Generation Tools” , Journal of the SMPTE , August 1999 , Vol. 108 No. 8 . EXTERNAL

Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-M001356.json

Reference Tree

Explore all references and references to this document, as a navigable tree.

Open Reference Tree

Reference this Doc

Plain text (ISO 690 compliant)

Preview:

Christopher C. Woollard; Enhancing Motion Picture Lens Performance by Digital Calibration and Correction, SMPTE Meetings and Conferences ( October 2010); SMPTE, 2010. Available at https://doi.org/10.5594/M001356

Snippet:

Christopher C. Woollard; Enhancing Motion Picture Lens Performance by Digital Calibration and Correction, SMPTE Meetings and Conferences ( October 2010); SMPTE, 2010. Available at https://doi.org/10.5594/M001356

HTML (ISO 690 compliant)

Preview:

Snippet:

<span class="citation">Christopher C. Woollard; <cite>Enhancing Motion Picture Lens Performance by Digital Calibration and Correction</cite>, SMPTE Meetings and Conferences ( October 2010); SMPTE, 2010. Available at <a href="https://doi.org/10.5594/M001356" target="_blank" rel="noopener">https://doi.org/10.5594/M001356</a></span>

SMPTE's HTML Pub

Preview:

Christopher C. Woollard; Enhancing Motion Picture Lens Performance by Digital Calibration and Correction, SMPTE Meetings and Conferences ( October 2010); SMPTE, 2010
doi: 10.5594/M001356
url: https://doi.org/10.5594/M001356

Snippet:

<li>
Christopher C. Woollard; <cite id="bib-10-5594-m001356">Enhancing Motion Picture Lens Performance by Digital Calibration and Correction</cite>, SMPTE Meetings and Conferences ( October 2010); SMPTE, 2010
<span class="doi">10.5594/M001356</span>
</li>