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Why is the perception of lighting
and illumination on photos
different from the reality
(actual visual perception)
Dr. Hilmi OR, FEBO
(Fellow of European Board of Ophthalmology)
Eye Surgeon
İstanbul - Turkey
Why is the perception of lighting
and illumination on photos
different from the reality
(actual visual perception)
Why is the perception of lighting
and illumination on photos
different from the reality
(actual visual perception)
Photography
Hilmi OR, AFIAP*, Master of Arts,
Student for Doctorate
(* Artist of International Federation of
Photography)
Why is the perception of lighting
and illumination on photos
different from the reality
(actual visual perception)
Hilmi OR
Hilmi OR
Member of
” Turkish National Committee on Illumination”
Student for
”Doctorate in Forensic Sciences”
Financial disclosure
I have
no financial support from any company or
financial benefit from techniques
mentioned
in this presentation.
OR, Hilmi
Marmara Üniv. Güzel Sanatlar Enstitüsü Fotoğraf Yüksek
Lisans Tezi: “Görme ve Fotoğraf Sanatındaki Fotoğraf
Çiziminin Karşılaştırılması” 2007
Light drawing
n
n
Eye >>> “seeing”
Photography >>> image “photograph”.
Görme algılaması
(göz sabit)
OR, Hilmi
Marmara Üniv. Güzel Sanatlar Enstitüsü Fotoğraf Yüksek
Lisans Tezi: “Görme ve Fotoğraf Sanatındaki Fotoğraf
Çiziminin Karşılaştırılması” 2007
OR, Hilmi
Marmara Üniv. Güzel Sanatlar Enstitüsü Fotoğraf Yüksek
Lisans Tezi: “Görme ve Fotoğraf Sanatındaki Fotoğraf
Çiziminin Karşılaştırılması” 2007
1.0
0.1
Görme algılaması
Görme algılaması
(göz sabit)
(göz sabit)
OR, Hilmi
Marmara Üniv. Güzel Sanatlar Enstitüsü Fotoğraf Yüksek
Lisans Tezi: “Görme ve Fotoğraf Sanatındaki Fotoğraf
Çiziminin Karşılaştırılması” 2007
OR, Hilmi
Marmara Üniv. Güzel Sanatlar Enstitüsü Fotoğraf Yüksek
Lisans Tezi: “Görme ve Fotoğraf Sanatındaki Fotoğraf
Çiziminin Karşılaştırılması” 2007
CF
Görme algılaması
Görme algılaması
(göz sabit)
Yarbus (1967)
Gaze: First 2 seconds: 6 foveal fixation >Screening Stop!
Yarbus
Attention to different issues: Eye browser movements!
Looking freely
Age?
Financial status
Yarbus (1967)
Gaze: First 2 seconds: 6 foveal fixation >Screening Stop!
Perception of the eye without movement
Color Photography of the same plane
Perception of the eye with searching an
exploring movement
The extension of the best view
area in photography and the eye
The extension of the best view
area in photography and the eye
Rod cells in retina –
Black and white photography
Perception of the eye with searching
an exploring movement
BW photography of the same plane
Perception of the brain with
searching an exploring movement
The extension of the best view
area in photography and the eye
The cone cells in the retina –
Color Photography / Photosites
The cone cells in the retina –
Color Photography / Photosites
The cone cells in the retina –
Color Photography / Photosites
Seeing
Seeing
Cyclops
The mobility of the eye –
The stationary of the camera
Light adaptation without
changing the resolution.
n
n
n
n
Eye: daylight > dark place
10 log (10.000.000.000)
Photography: White > black: 10 stops!
3 log (1.000)
Light adaptation
changing the resolution.
n
Eye adaptation to dark: 20-40 minutes.
Only rods > Visual acuity drops!
n
Photography: Pixelisation
n
Colours
seen –photographed -printed
Lens and imaging system
of the eye – of the camera
The imaging plane
in the eye – in photography
The imaging plane
in the eye – in photography
Motion perception –Motion imaging
Motion perception –Motion imaging
Motion perception –Motion imaging
Motion perception –Motion imaging
Depth perception in the eye
and in photography
Colour constancy
Color memory and color adaptation
of human eye and brain
The silhouettes
The silhouettes
The silhouettes
Conclusion
n
Photography seems to be similar to
visual perception in normal human
vision.
Conclusion
n
n
Photography seems to be similar to
visual perception in normal human
vision.
But there are many details in visual
perception by human brain, which
cannot be imitated in photography.
Thank you…
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