In the previous post, we saw that, with standard settings the D4 shows minor clipping in its true raw histogram at the metered exposure for a moderate contrast subject, even though the in-camera histogram looks clipped at that exposure. In this post, I will show what happens when you find the correct ETTR exposure by… [Read More]
Testing for ETTR, part 1
[This is the first in a looong series of posts on the topic. If you want to skip the evolution of my ideas and go right for the conclusions, click here.] Conventional wisdom among camera users, especially if people taking pictures with cellphones count as camera users, is that JPEG is plenty good enough, and… [Read More]
Looking at true raw histograms
If you want to follow along with me as I explore the world of true raw histograms — defined as histograms in the native color space of the sensor — you’re going to need a a program you probably don’t have. The one I suggest is called Rawdigger. Point your web browser here, and download… [Read More]
Raw histograms
For the past nine months, I’ve been using the Betterlight scanning back. The software that runs the back has a capability that, as far as I know, is unique among all the current crop of digital cameras: it will display the histogram of the captured image in its native color space. In fact, that is… [Read More]
JPEG 2000
In the January, 2013 issue of Shutterbug, which arrived at my house last week, David Brooks has his usual column, “Q&A Digital Photography”. A reader asks a question about an earlier column (that I didn’t notice) that said the JPEG 2000 used lossless compression. Mr. Brooks gives the following answer: The file formats supported by… [Read More]
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