The Author – Bart Busschots
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Jul
25
Photographing at Dusk – My Approach
Filed Under Photography on July 25, 2014 | Leave a Comment
As with everything in photography, there are an infinity of right ways of capturing that wonderful light you get just before and just after sunset. This is a description of the workflow I’ve settled on after much experimentation. It works for me, and it gives me shots with a look and feel that I like – largely realistic, but with a touch of artistic license to try capture the feel as well as the physicality of the light.
I put a lot of effort into processing my dusk shots, but, my aim is to end with a final product that doesn’t look like it’s been heavily processed. There are two reasons so much processing is needed on these kinds of shots:
- High Dynamic Range – Our eyes have a much greater dynamic range than our screens or a JPEG image can represent, and at dusk, the dynamic range is well beyond what a JPEG can represent, so what our eyes seen, and what you get straight out of a digital camera look very very different indeed.
- Mixed White Balance – Dusk scenes almost always involve mixed white balances across the scene. If you balance for the sky, the ground is usually wrong, if you balance for the ground, the sky will usually be wrong.
Shooting at dusk is all about dealing with these two problems.
Jul
19
TTT Part 19 of n – Text Searches
Filed Under Computers & Tech, System Administration on July 19, 2014 | 1 Comment
In the previous two instalments (17 & 18) of this series we learned how to represent patters with regular expressions, or, to be more specific, with POSIX Extended Regular Expression (or EREs). We used the egrep command to test our regular expressions, but we didn’t discus the command itself in detail. Now that we understand regular expressions, it’s time to take a closer look at both egrep, and it’s older brother grep, both commands for filtering and searching text.