Calibrating Lenses for Standard Scales of Reproduction with Digital SLR cameras

Young, Stephen; Lake, Amy

doi:10.1080/17453050802040486

Cited by 5 publications

(5 citation statements)

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“…The calibrated lens will have an alternative linear scale, which corresponds to a full-frame camera. Young, et al published the details of the calibration technique that involves photographing a ruler [11]. The horizontal dimension of a full-frame sensor is 36 mm.…”

Section: Reviewmentioning

confidence: 99%

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A Review Of Oculoplastic Photography: A Guide For Clinician Photographers

Ong¹,

Yap²,

Wai³

et al. 2016

Cureus

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Clinical photography in the field of oculoplastic surgery has many applications. It is possible for clinicians to obtain standardized clinical photographs without a studio. A clinician photographer has the advantage of knowing exactly what to photograph as well as having immediate access to the images. In order to maintain standardization in the photographs, the photographic settings should remain constant. This article covers essential photographic equipment, camera settings, patient pose, and digital asset management.

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Section: Reviewmentioning

confidence: 99%

“…Here is a table (Table 1), containing the measurements of the image of the ruler [11] at various magnification ratios. The table compares three different cameras.…”

Section: Reviewmentioning

confidence: 99%

A Review Of Oculoplastic Photography: A Guide For Clinician Photographers

Ong¹,

Yap²,

Wai³

et al. 2016

Cureus

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show abstract

“…Therefore, the lens has to be calibrated to produce an alternative linear scale, which provides a field of view equivalent to a full frame camera. The details of the calibration technique have been published [ 5 , 13 ].…”

Section: Discussionmentioning

confidence: 99%

“…The calibration process is essential to achieve comparable magnification in line with the Westminster reproduction ratio. The Westminster reproduction ratio is used by professional medical photographers, and this standard was based on the 35 mm film camera [ 5 ]. The images, which were captured in RAW file format, were downloaded into Adobe Lightroom software version 5 (Adobe Systems, Inc., San Jose, CA) for conversion into TIFF files.…”

Section: Methodsmentioning

confidence: 99%

Standardized Photographic Views in Oculoplastic Surgery: How to Capture Quality Images Outside a Photographic Studio

Ong

Kalantzis

Yap

et al. 2016

Cureus

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PurposeThe aim of this paper is to demonstrate fundamental photographic techniques and standardized views in oculoplastic disease and surgery outside of a photographic studio.MethodsA Canon EOS 60D digital single lens reflex (DSLR) camera, which was fitted with a Canon EF-S 60 mm USM macro lens, was used to photograph the subject. A Canon MR-14EX Macro Ringlite was used to illuminate the subject. Informed written consent was obtained for publication of the photographs used in this study. The photographs were taken in an ophthalmology clinic using standardized photographic settings at various magnification ratios. The magnification ratios were recalibrated and adjusted to accommodate the smaller sensor size in-line with standardized medical photography guidelines.ResultsWe present a series of core views for various oculoplastic and orbital disease presentations.ConclusionsIt is possible to capture quality standardized digital photographs in a busy clinical environment without the need for a dedicated photographic studio.

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“…WB is a process of removing the unnatural color cast from an image (1,7,14,32,34,35,37,38) . Different light sources can have different color temperatures.…”

Section: Wbmentioning

confidence: 99%