Archive for January, 2007

Digital Camera Idea: Programable Interface

Friday, January 12th, 2007

A number of things can make us wish our digital camera behaved differently. Either it is because we prefer something to work another way or because we got used to it the other way based on a previous camera.

Several manufacturers offer some form of customization. Pentax cameras, for example, have a programable green or function button. Several of them can also customize what gets reset each time the camera is turned off. Canon DSLR cameras have dozens of custom-functions which alter their behavior.

Each such camera offers a different set of customization. Each customization is good, but why not have them all? The main burden is the camera’s limited interface. Having hundreds of options would make menu navigation long and tedious. The easy-to-implement solution is to offer software-based customization. Most digital cameras already have sophisticated firmwares. What is left is to write software which can manipulate a camera’s firmware to customize it. For those who wrote a camera’s firmware it should not be difficult.

Imagine how we could customize our camera’s interface. Small things like self-timers could easily be customized in duration and number of shots, like some Canon SD-cameras do. Not only could we decide which option gets reset when the camera is powered-off, like most Pentax cameras, we could also decide what it gets reset to. We could make menus and options more efficient by removing those not used and ordering the menus by usage frequency. Why keep the choice of resolution, digital zoom or kelvin white-balance when we do not use them? If there is a print or share button, we could reprogram it to do something useful, like change ISO. Even views could be changed, chosing which item gets displayed on the LCD and under the viewfinder could make a viewfinder less cluttered.

A lot of digital cameras are limited by their firmware. These limitations could be overcome. Take exposure compensation for example,most cameras only allow 2 stops either way. There is no real reason for that, all the camera needs to do is some simple math. Customzing its firmware, this could easily be increased. The same is true for number of bracket shots and bracketing steps.

Just imagine the possibilities…

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On Manipulating Images

Friday, January 5th, 2007

There is a lot of talk about the wether images should be manipulated or not. Some people write huge articles about it, some argue it out endlessly in forums and discussion groups. Here is the simple truth:

Manipulated Photo Through Plane Window

  • Photography is an art.
  • Manipulating images is an art.
  • An artist can do one of the two or both.

No one should be offended by manipulated images or artists who do it. Wether such images are admissible in court is another story. Art is art, no matter the technique used. You can be offended by people who lie though. If an image is appealing because it was manipulated, so be it! But the truth should not be hidden.

It is OK to be good at manipulating images but not to lie about it. I one saw an image posted in an online gallery, its caption read: this image is unmanipulated, so don’t ask!. Below, under techncal details, there was the camera used, f-stop, shutter-speed and the following: USM, dodge, burn, levels, adjustements to bring out colors. Enough said!

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Sony Cybershot DSC-H5 Full-Review Posted

Thursday, January 4th, 2007

A full-length review for the Sony Cybershot DSC-H5 was just posted at Neocamera. The H5 is the 7 megapixels flagship ultra-zoom camera from Sony. This is a full-featured camera equipped with a stabilized 12X optical zoom lens, a high-resolution 3″ LCD, full-manual controls, custom white-balance and a DVD-quality movie mode.

As far as specifications go, the Sony H5 boasts some of the highest numbers available. The Panasonic Lumix DMC-FZ50 and Panasonic Lumix DMC-FZ30, which also have a stabilized 12X optical zoom, boast more megapixels but have smaller LCD screens.The only camera which truly exceeds the H5′ specifications lacks stabilization but has a 15X optical zoom, 3.5″ LCD and 8 megapixels sensor. That is the rarely seen Samsung Pro 815. It was reviewed a year ago at DP Review.

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Digital SLR Models, Are They All The Same?

Tuesday, January 2nd, 2007

Until last week, the DSLR model page looked like an excersize in repetition. Every model had exactly the same set of icons. Except for megapixels, memory and battery types, all the feature icons were the same: SLR, high-ISO, full-manual controls, custom white-balance, hot-shoe, night photography and action photography.

Of course, DSLR cameras are expected to have all those features, since they form the higher-end of the digital camera market. However, within the DSLR market, there is a range of capabilities, performance and price. Case in point, the Canon EOS 5D costs 7 times more than the K110D! Such price difference could not be justified if all DSLR cameras were all the same.

Given that there are differences among DSLRs, some of them more subtile than others, a new set of Neocamera icons was added for the purpose of distinguishing between DSLR cameras. These new icons are explained directly in the revamped DSLR model list page.

The choice of new icons came down to selecting the major differences which improve the usability and capability of a digital SLR camera. Obvious ones are stabilization which can drastically reduces the cost of lenses, dust-reduction which reduces maintenance and weather-proofing which enables more photographic opportunities. Spot-metering and depth-of-field preview are also among the new icons. Canon and Nikon use these features to separate otherwise similar entry-level models from higher-end models. Ironically, spot-metering is the simplest form of metering and the cheapest to implement.

A more subtle area was viewfinder sizes. For frequent photographers, the viewfinder’s size can greatly affect the usability of a camera. For this, we evenly divided current viewfinder sizes in 4 steps from Small to Extra Large.

The final subset of new icons replace the old continuous drive icon. All digital SLR have continuous drives but their performance vary greatly. As such, the new continuous drive icons indicate relative speed and duration of the drive. Fast is at least 4 FPS, slow is less than that. Infinite means the camera can fill up completely its memory card without slowing down. Long means that a camera can shoot for at least 5 seconds continuously. Short bursts are not that long and are more useful for people photography to capture fleeting expressions rather than to follow action. Note that the slower the drive, the less frames are required to quality for a Long Continuous Drive icon.

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