the last word

Photography meets digital computer technology. Photography wins -- most of the time.

  • site home
  • blog home
  • galleries
  • contact
  • underwater
  • the bleeding edge
You are here: Home / Archives for 2015

Archives for 2015

Single-image IR hill photos

December 31, 2015 By JimK Leave a Comment

These are from earlier in the week, as a weak storm front came through. They’re all infrared single exposures; I haven’t tackled any composites from recent captures yet.

More infrared hill images

December 29, 2015 By JimK Leave a Comment

Infrared hills

December 28, 2015 By JimK 3 Comments

Yesterday, I showed some color images of the hills that I made recently. Today, it’s equal time for the B&W infrared ones.

Winter hills in color

December 27, 2015 By JimK 3 Comments

We’re getting to the point where the winter grass is beginning to grow high enough that it’s visible over last year’s dead grass. Time for a few color shots.  

More on gamma and gamut

December 25, 2015 By JimK Leave a Comment

In this post, I opined that the gamut of an RGB color space did not depend on its gamma, or nonlinearity, subject to some constraints on the nature of the nonlinearity and the precision of the specification of the values. Thanks to a discussion with a DPR poster who I only know as JDin Oregon,… [Read More]

  • 1
  • 2
  • 3
  • …
  • 65
  • Next Page »
December 2019
SMTWTFS
« Nov  
1234567
891011121314
15161718192021
22232425262728
293031 

Articles

  • About
    • Patents and papers about color
    • Who am I?
  • How to…
    • Backing up photographic images
    • How to change email providers
  • Lens screening testing
    • Equipment and Software
    • Examples
      • Bad and OK 200-600 at 600
      • Excellent 180-400 zoom
      • Fair 14-30mm zoom
      • Good 100-200 mm MF zoom
      • Good 100-400 zoom
      • Good 100mm lens on P1 P45+
      • Good 120mm MF lens
      • Good 18mm FF lens
      • Good 24-105 mm FF lens
      • Good 24-70 FF zoom
      • Good 35 mm FF lens
      • Good 60 mm lens on IQ3-100
      • Good 63 mm MF lens
      • Good 65 mm FF lens
      • Good 85 mm FF lens
      • Good and bad 25mm FF lenses
      • Good zoom at 24 mm
      • Marginal 18mm lens
      • Marginal 35mm FF lens
      • Mildly problematic 55 mm FF lens
      • OK 60mm lens on P1 P45+
      • OK Sony 600mm f/4
      • Pretty good 16-35 FF zoom
      • Pretty good 90mm FF lens
      • Problematic 400 mm FF lens
      • Tilted 50 mm FF lens
      • Two 15mm FF lenses
    • Found a problem – now what?
    • Goals for this test
    • Minimum target distances
      • MFT
      • APS-C
      • Full frame
      • Small medium format
    • Printable Siemens Star targets
    • Target size on sensor
      • MFT
      • APS-C
      • Full frame
      • Small medium format
    • Test instructions — postproduction
    • Test instructions — reading the images
    • Test instructions – capture
    • Theory of the test
    • What’s wrong with conventional lens screening?
  • Previsualization heresy
  • Privacy Policy
  • Recommended photographic web sites
  • Using in-camera histograms for ETTR
    • Acknowledgments
    • Why ETTR?
    • Normal in-camera histograms
    • Image processing for in-camera histograms
    • Making the in-camera histogram closely represent the raw histogram
    • Shortcuts to UniWB
    • Preparing for monitor-based UniWB
    • A one-step UniWB procedure
    • The math behind the one-step method
    • Iteration using Newton’s Method

Category List

Recent Comments

  • JimK on Roles of camera and raw developer in determining color
  • chris on Zeiss Batis 135 on Nikon Z7
  • JimK on Zeiss Batis 135 on Nikon Z7
  • chris on Zeiss Batis 135 on Nikon Z7
  • FredD on Roles of camera and raw developer in determining color
  • JimK on Roles of camera and raw developer in determining color
  • JimK on Roles of camera and raw developer in determining color
  • Nate on Roles of camera and raw developer in determining color
  • Jack Hogan on Roles of camera and raw developer in determining color
  • Zé De Boni on Roles of camera and raw developer in determining color

Archives

Unless otherwise noted, all images copyright Jim Kasson.