Birding Image Quality Tool

A blog on bird identification from photographs

Pages

  • Home
  • Introduction
  • Quick Reference Guide
  • Image Quality Tool
  • Spotlight - On Birds and Light
  • Spotlight - On Colour
  • Spotlight - On Field Marks
  • Spotlight - On Forensic Image Analysis
  • Spotlight - On Gestalt
  • Spotlight - On Human Bias
  • Identification : Resolution
  • Identification : Focus
  • Identification : Exposure
  • Identification : Colour
  • Identification : Artefacts

Spotlight - On Field Marks


A SUMMARY - BIRDING IMAGE QUALITY TOOL REV. 4.0


Light and Avian Anatomy

LIGHTING AND AVIAN ANATOMY

LIGHTING AND BARE PARTS

SHADOW TOPOGRAPHY

BOLD AND BLAND RETRICES AND REMIGES


Typical Field Marks

SHAFT-STREAKS AND TRAMLINES

FEATHER CENTRES AND SUBTERMINAL MARKS

FRINGES, NOTCHES AND TIPS

COLOURS

THE BOLD AND THE BLAND

SUMMARY OF FIELD MARKS
False Field Marks

 FALSE FIELD MARKS

FALSE FRINGES

FALSE CONTRAST

FALSE MALAR STRIPE

BOLD AND BLAND RETRICES AND REMIGES



 Analysis

 FIELD EXPOSURE TEST

 FOCUS TEST

COLOUR SATURATION

WHITE BALANCE TEST

GREY SCALES AND GULLS PART 1

GREY SCALES AND GULLS PART 2

GREY SCALES AND GULLS PART 3

GREY SCALES AND GULLS PART 4

GREY SCALES AND GULLS PART 5

TONAL GRADIENT ILLUSIONS

BOLD AND BLAND RETRICES AND REMIGES

COMPARATIVE PHOTOGRAPHIC ANALYSIS (CPA)

RINGER'S (BANDER'S) GUIDES

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Most Popular Posts

  • Birds and Light - UV Light
    CSI Birding HERE  is a useful if somewhat dated summary of UV vision and patterning in birds. Many flowers have amazing hidden UV patt...
  • Field Marks - Grey Scales and Gulls (Part 2)
    In the posting Grey Scales and Gulls (Part 1)  I found an effective way to replicate the famous Kodak Grey Scale in our digital space (sRGB...
  • Birds and Light - Against The Sky (Part Two)
    In Part One  I highlighted why photographing birds against the sky is one of the major challenges in bird photography.  The sky is always b...
  • Gestalt - Comparative Photographic Analysis (CPA)
    When visiting Swedish birder Sture Persson encountered a smallish swift with a white rump at Bull Island, County Dublin on the 25th Decembe...
  • Forensics - 'Cosine Fourth' Law of Illumination Falloff
    Vignetting is the falloff of illumination in an optical system towards the edge of the image.  Birders who digiscope would be very familia...
  • Gestalt - Gestalt Keys (Primary Projection)
    For those new to gestalt and gestalt keys please read the introductory post ( HERE ) and the essential principles of gestalt keys ( HERE ) ...
  • Gestalt - Limitations of CPA and 3D Modelling
    In my two most recent postings I have showcased two novel and potentially powerful techniques for exploring the thorny subject of gestalt f...
  • Forensics - Femto-photography
    In a photo we may marvel at the frozen movement of a bird, captured in one thousandth of a second.  High-speed cameras have existed...
  • Gestalt - Gestalt Keys (The Principles)
    For those new to gestalt and gestalt keys please read the introductory post HERE before proceeding. A Secure Solution By now hopefully ...
  • Colour - Plumage Morphing
    In this Birding Frontiers posting the late, and sadly missed Martin Garner  describes a phenomenon often attributed to Siberian Chiffchaf...

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