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Engadget Primed: Camera metering explained
Primed goes in-depth on the technobabble you hear on Engadget every day -- we dig deep into each topic's history and how it benefits our lives. You can follow the series here. Looking to suggest a piece of technology for us to break down? Drop us a line at primed *at* engadget *dawt* com. Is learning how to meter with your camera really necessary? With all the intelligent models out today, who needs it, right? Well, you may, depending on the type of killer photography you hope to produce. When it comes to the person behind the camera, there are a few types of photographers. First, there's the photog who just wants to snap away, not terribly concerned about how their photos turn out -- or, at the very least, not interested in knowing how to alter the camera. If this describes you, that's fine -- the latest-and-greatest compact cameras may be your cup of tea. But then there's the amateur shooter who desires a better understanding of how their cameras determine exposure, and if you fit into this category, this piece should be right up your alley.Metering is not a subject you can easily master, let alone explain entirely in an article of this length, but we can give you an idea of how it all works. I consistently see the faces of my workshop students glaze over as I wax rhapsodic about the wonders of metering, but I also notice wry smiles from time to time, which shows me the wheels are turning -- they begin to realize all the things they can do if only they can conquer this aspect of photography. However, comprehension and applied mastery are two separate balls of wax. Putting what you learn to practice is the start, and you can improve over a number of months, but true metering control in any situation requires years of practice.So for our 2012 pre-apocalyptic installment of Primed, we'll break down the world of camera metering, giving you a bit of history, dissecting the main components, describing what your camera wants to do and telling you what the future may hold. By the end, you'll have a better understanding of this vital photographic topic... either that or you'll be in a nice deep sleep.Note: Check out our recent Primed articles on aperture and image sensors to add to your metering knowledge.
Friday Favorite: Photomatix Pro
There are few times I have used software that really caused my jaw to drop. Photomatix Pro did just that. It's a Mac OS X utility that allows you to create what are called High Dynamic Range (HDR) images from separate digital exposures taken at different shutter speeds (exposure levels). These pictures are far more colorful and impressive in their tonal range and saturation.Many digital cameras have something called AEB, or Automatic Exposure Bracketing. You click the shutter once, and the camera takes 3 pictures instead of just one. In my case I usually shoot a normally exposed image, then one 2 stops under, and another one 2 stops over. If your camera doesn't have AEB you can do this manually.Photomatix Pro combines the three exposures you've taken into one, and tone maps the image into a JPEG or TIFF that displays a really wide dynamic range. The result is often a stunning picture, with little loss in the shadowy areas, and no blown-out highlights. It's hard to do if you are shooting people because they will move between the 3 exposures, but works great with landscapes. A tripod is recommended, but I've done just fine handheld and Photomatix Pro will automatically line up (register) the 3 images.Words can't describe the difference, so I've included a few examples to look at. There are other Mac apps that do similar things, but I've had the best luck with Photomatix Pro. They also make a Photoshop plug-in and one for Aperture, but I think the full program is the best. Newer versions of Photoshop also support the creation of these HDR images, but the results are not as spectacular in my view. There is also a free, basic version of the program that lets you combine 2 images, but it is simply not as effective.You can search for a lot of information on HDR photography on the web. I have found this site to be very good, and it reviews the different software that is available. It's very easy to overdo the look of HDR images, and Photomatix Pro gives you lots of control. You can make your images really good, or outlandish. The control is in the hands of the photographer. To many, HDR will be old hat, but a lot of photographers haven't tried it, and will be pleasantly shocked at the results. Since you can download Photomatix Pro for free, if you are serious about digital imaging, I'd give it a tryout. If you buy the full version it is US$99.00.Here are some examples of how HDR imaging works. Of course these images are reduced in quality and resolution, so they only hint at the differences.%Gallery-65254%
