September 28, 2007
ePHOTOzine
ePHOTOzine, apparently the UK's largest and friendliest on-line photography magazine, looks like a hit. There are tons of articles, tips, reviews and techniques. Check it out, even if you live in France—they won't mind.
D3 Jealousy
Have a look at the ISO these were shot at. There's almost no real noise at ISO 1600, and it's only minor at 3200. ISO 6400, is the new ISO 800 it seems.
September 27, 2007
Normally, photographers use histograms as a tool to evaluate exposure, so when I saw a histogram representing the Manhattan skyline, I was in shock.
September 26, 2007
Photographing Autumn
Ritz Camera has posted two articles related to photographing this autumn season. Check out How to Photograph Football (American Football), and How to Photograph Autumn Color.
September 20, 2007
The Gimp and HDR
It seems that there are lots of people that don't understand that The Gimp is not capable of doing HDR images. There is a simple reason for this, which involves the way The Gimp represents image files. Without being too technical, I'll try to explain.
The Gimp's basic model represents each pixel as 3 different numbers between 0 and 255. This means that it can represent only 16581375 different colors per pixel. I say only, because, if you were to use 3 floating point numbers, from 0 to 1, or 3 numbers from 0 to 65535, or some other power of 2 (minus 1), you then are able to represent many more colors; you become able to represent a higher dynamic range of colors.
Even if The Gimp supported more pixel values, our monitors can't, and we need to use a process like tone mapping to convert the computed HDR image (comprised of some combination of multiple exposures), back into something viewable; something where the range of pixels is made up of 3 integers from 0 to 255 (in the general case).
This doesn't mean The Gimp sucks, because it certainly doesn't; it just means that it has some limitations and one has to be mindful of them. This "problem" of image representation is only really visible if you're looking for ultra-high quality output, like movie producers, and most photo professionals. Amateurs need not worry.
September 19, 2007
The Most Popular Online Photography Tools, as described by Tech Magazine.
September 14, 2007
September 04, 2007
One Exposure HDR
There's been much talk about HDR in the last year and how you have to take multiple shots of exactly the same thing. Unfortunately there are times when this isn't possible, whether it be because you are tripodless at the moment, or there's some action in the shot. Fortunately, if you're shooting RAW files there's hope. (You are shooting RAW right?) Eirikso has a technique for creating HDR images from one RAW file.
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