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 / 2014 / July / Archives for 7th

Archives for July 7, 2014

Zeiss 35mm f/2 Biogon ZM on the a7S

July 7, 2014 JimK 5 Comments

I need a break from the lens cap pictures. Let’s see how legacy glass does on the a7S. The Zeiss 35mm Biogon in the Leica M-series mount is a delightful little lens. Small, and with nice controls, it seems like it was made for cameras like the alpha 7 series. However, it is the toughest… [Read More]

The Last Word

Sony a7S RN vs ISO corrected for amplifier gain

July 7, 2014 JimK Leave a Comment

There’s a way to look at read noise vs ISO setting that’s different than the curves I presented in yesterday’s post. It’s a bit less intuitive, but, if you can get your head around it, it can give useful insight into how the sensor works. Rather than presenting the standard deviation of the noise in the raw… [Read More]

The Last Word

July 2014
S M T W T F S
 12345
6789101112
13141516171819
20212223242526
2728293031  
« Jun   Aug »

Articles

  • About
    • Patents and papers about color
    • Who am I?
  • Good 35-70 MF lens
  • 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 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

  • JimK on Backing up photographic images
  • Jeff Wolford on Backing up photographic images
  • Barry Goyette on My lack of productivity
  • JimK on Scanning black-and-white negatives with a GFX 100S
  • Andrew Freeman on Scanning black-and-white negatives with a GFX 100S
  • JimK on Sony a7RIV continuous drive mode precision
  • Richard Creamer on Sony a7RIV continuous drive mode precision
  • JimK on Smallrig L-bracket for Nikon Z9
  • Petert Orr on Smallrig L-bracket for Nikon Z9
  • Christian on How fast is the Z9 shutter?

Archives

Copyright © 2023 · Daily Dish Pro On Genesis Framework · WordPress · Log in

Unless otherwise noted, all images copyright Jim Kasson.