"OT-SCOPE BY OGISO &amp; TAKEI, " THE WHOLE-SKY PHOTOGRAPHIC INSTRUMENT WITH THE ORTHOGRAPHIC PROJECTION : PART 1. OPTICAL COMPOSITION AND APPLICATION

Ogiso, Sadaaki; Takei, Masaaki

doi:10.3130/aijsaxx.119.0_57

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“…It took roughly 80 years of development to start with cameras using rollable films and another 55 years to produce more sophisticated cameras to take pictures on colour or negative colour films. Then photos of the whole sky could be taken on paraboloidal mirrors placed horizontally under the camera as by the Pleijel´s globoscope (1952) or using the concave lens for the whole sky photos (Hill, 1924, discussed by Longmore, 1964) and by Ogiso and Takei (1966) with orthographic projection lens and fish-eye camera. Another solution was to mount stereographic fish-eye lens directly on the camera, as with the Nikon film camera which was sold with such adjustment from 1980, and even more sophisticated is a digital camera which could send the image directly into computer files, e.g.…”

Section: Developments In Photography To Reproduce Whole Sky Imagesmentioning

confidence: 99%

The Research Search For The Least Beneficial Overcast Sky And Progress In Defining Its Luminance Gradation Function

Kittler¹,

Darula²

2014

Building Research Journal

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Recently illuminance levels under ISO/CIE homogeneous standard sky types were characterised in their relative terms after ISO/CIE (2004, 2003) standardised as normalised by the luminance in the zenith. Sky luminance and horizontal illuminance based on the gradation and scattering indicatrix functions, including the extreme overcast cases frequently encountered in nature, were recently determined in absolute physical units of luminance in kilocandles per meter square and of illuminance in kilolux. The historical search to find energy and visibility critical sky luminance distributions shows a progression of steps in studying the worst or critical overcast situations. That progression has enabled the determination and evaluation of interior illuminance for comparison of the merits of dual daylighting and artificial lighting under established criteria for comfortable visibility.

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Section: Developments In Photography To Reproduce Whole Sky Imagesmentioning

confidence: 99%

The Research Search For The Least Beneficial Overcast Sky And Progress In Defining Its Luminance Gradation Function

Kittler¹,

Darula²

2014

Building Research Journal

View full text Add to dashboard Cite

show abstract

"OT-SCOPE BY OGISO & TAKEI, " THE WHOLE-SKY PHOTOGRAPHIC INSTRUMENT WITH THE ORTHOGRAPHIC PROJECTION : PART 1. OPTICAL COMPOSITION AND APPLICATION

Cited by 1 publication

References 0 publications

The Research Search For The Least Beneficial Overcast Sky And Progress In Defining Its Luminance Gradation Function

The Research Search For The Least Beneficial Overcast Sky And Progress In Defining Its Luminance Gradation Function

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