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

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Archives for 2011

Resampling for printing in Lightroom

February 2, 2011 JimK 2 Comments

I imported the 240 ppi printing target from the previous post into Lightroom and printed it to the 3880, selecting 360 ppi as the print resolution. Here’s what I got: The trees are fuzzier then the Photoshop bicubic example in the previous post. The letters are much fuzzier. The two lines with single pixel spacing… [Read More]

Technical

Resampling for printing — basic alternatives

January 31, 2011 JimK 1 Comment

After a couple of false starts, I created the following test image for resampling tests: The test image has a smooth gradient in the upper left corner, a series of lines at two tones and two angles in the lower left corner, two characters of Zone V antialiased text, and a crop from an actual… [Read More]

Technical, The Bleeding Edge

Inkjet printing on Epson, part 4

January 29, 2011 JimK 9 Comments

Before moving on to optimum resampling strategies in practice, which is where I’m going with this Epson printer testing, I thought I’d take a look at what happens with the 3880 at 1440/720 dpi resolution and “finest detail” unchecked. I used ABW mode, and the same paper as for the other tests. The first thing… [Read More]

Technical

Inkjet printing on Epson, part 3

January 28, 2011 JimK 3 Comments

I thought I’d look at the way the Epson 3880 and the driver resample images at 2880/1440 dpi. I took the now-familiar grating at 700 ppi, and resampled it in Photoshop using nearest neighbor. This is what I got: Then I printed a 700 ppi image using ABW. Here’s what it looks like: The pattern… [Read More]

Technical

Inkjet printing on Epson, part 2

January 28, 2011 JimK Leave a Comment

I thought I’d compare the Epson driver’s color mode to the Advanced B&W (ABW) mode that I used in yesterday’s post. Here is the test grating at 360 ppi, printed at 2880/1440 dpi: Except for some color shifts that vary with gray level, it looks a lot like the ABW print. At 720 ppi, it looks like… [Read More]

Technical

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Articles

  • About
    • Patents and papers about color
    • Who am I?
  • How to…
    • Backing up photographic images
    • How to change email providers
    • How to shoot slanted edge images for me
  • 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 35-70 MF 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 16-35mm zoom
      • 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 20 mm f/1.8 FF lens
      • Tilted 30 mm MF 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

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