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]
Search Results for: histogram
Auto ETTR
While I was in New Zealand, we took a helicopter ride from Queenstown to Milford and back. I had an outside seat, and made some aerials of the beautiful mountains and valleys. I couldn’t use the M9 for two reasons. First, the buffer was too small. The second reason involved exposure. The only way to… [Read More]
Going from digital to chemical photography
It’s not fair of me to criticize what Tillman Crane had to say to digital photographers who are thinking about trying the chemical world without saying what I’d say. So here goes, without the space limitations that encumbered Crane. As in the previous post, my assumption is that the digital photographer is already working with… [Read More]
ETTR in perspective
As we’ve seen in the previous posts and in one comment thread, the main reason – some say the only reason – to use the expose-to-the-right method is to achieve minimum noise. If you’re using an iPhone, that’s important all the time. With a point and shoot camera, it’s important most of the time. With… [Read More]
Headroom in ETTR exposures
It was clear in the previous post that a two-stop overexposure using expose-to-the-right (ETTR) was not recoverable. Is there enough headroom in the Lightroom/D4 pair for a one-stop overexposure? Let’s find out. Here it the correctly-exposed image and its histogram: Here is a one-stop over image and its histogram: Here’s what I could do in… [Read More]