A while ago, I began hearing a term that I wasn’t familar with: lookup tables (LUTs). Curious, I “looked up” the definition, and was mildly puzzled to see it defined as a series of values in table format that helps you interpret or translate another set of values.
What does that have to do with photography? As it turns out, every part of a digital image is a set of values – for size, dimensions, camera settings, colour space, etc. We’ve long had the ability to manipulate any one value to our liking through the sliders we see in modern editing software. Now it seems we also have the ability to redefine broad swaths of data at once. Find out how. Continue reading “Looking at Lookup Tables (LUTs)”

In the past, this would have caused me to breathe more rapidly, excitement building, as I surveyed the options ahead. Not this time. Not for any of them. And I’ve been trying to figure out why. 
What are filters and why are they separate from adjustments? And what the heck is rasterizing anyway? Or the difference between “rasters” and “vectors”? And what is “rendering”? And of course, the single most important concept – non-destructive vs. destructive editing.

I’ve been hearing and reading quite a bit about this thing called computational photography. It is such a new field that what’s in and what’s out, or even the language with which it is communicated, is not yet well defined. But it can be applied to any form of optical capture, whether in the science lab or in the artist’s studio.
That said, there is both artistic and practical value in marking a photograph as yours. This post looks at some of the more popular ways to do that.