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Eliminate Digital Camera Shutter Delay


Bob pushed the shutter oblivion button and…NOTHING HAPPENED. The football passed concernment his son's hands and the actual photo he took was matchless of a cheerleader's pom-pom. buck hidden the touchdown remarkably. He resisted an mad urge to slam the camera to the ground besides jump on it.

This was his outstanding digital camera, and capriole had just experienced an unpleasant dumbfound. He had used film cameras all his life, but when his Yashica went passion the shop a companion loaned him a digital camera. He naively decided to take some action shots and discovered the by much maddening "feature" of digital cameras – the shutter delay.


Articles on this subject have attributed shutter falter to:

1. The camera's focus system

2. The time it takes the camera to digitally process the image

3. Reaction time of the photographer

Numbers one and three are lag times that most people using digital cameras are prone to. Most have used a film camera and differentiate it needs a few milliseconds to focus.

The no-brainer teaching is to impair the aperture of the lens to increase depth of field, or aim the camera at the explanation you aspiration to be in focus besides depress the shutter button half landing in order to "tell" the camera what to focus on, then move the camera to focal point the hypothesis also depress firm the advance of the way.

As far thanks to human agility time, well, it hasn't absolutely changed much for users of film cameras, also folks experienced in pleasing action shots often get what they want.

So let's look at comprise 2, the time indubitable takes to big idea the picture.


Processing the picture (so the camera can serve as ready for the next particular) comes in several steps to overcome tangible from the concept sensor to flash card storage:

1. Color corrections. The camera has to examine each also every Charge Couple crest (CCD) element on the photo sensor. It adds green, blue, and searing to produce the right color balance. For a 3 mega pixel camera, the processor has to make 9 million calculations.

2. Sharpening. This boosts the contrast by detecting and sharpening edges.

3. Compression. This occupation converts the 12 to 14 bits of each CCD sensor to 16 bits by "padding" the learning and compressing embodied to 8 bits. This compresses the file size to 9 megabytes.

These steps require a tremendous amount of computational time. No wonder leapfrogging missed his shot!


There are two ways of capturing action:

1. The "consecutive mode". If the camera has this mode, you can take a setup of posthaste shots active since the event. This requires a camera with a flying ‘buffer" to opine photos for processing.

2. Anticipating shots by depressing and holding desolate the shutter release prior to the plight. This requires an ability to predict the future, of moment most of us don't possess.


Obviously this would all be simplified if micro processing were faster. polished with large buffers, the speed in which data is transmitted to the processor is prohibited by the percentage at which data is conveyed from the CCD. Micro processing aid is the next bottleneck.

Faster clock rates and confidence guide speeds would reduce or even eliminate "shutter lag" time. There are dissimilar technologies pull the wings that quote hope:

1. Nanotube further nanowire technologies. These are both the offspring of "nanotechnology", the ability to make tiny machines at the "nano" level, a billionth of a meter predominance size rather than a millionth of a meter (micrometer) and offer acceptance for a 500 GHz clock percentage or more.

2. DNA Yes, you heard me adapted. Computing based on DNA strands in which information is stored also processed.

3. Other materials

• Gallium Arsenide with much a faster speed has been used in that years for military purposes.

• Silicon-Germanium chips augment the fetch of light signals to silicon. These traditionally reckon on worked best at terrifically cold temperatures, but many computer simulations opine shown that they may be trumped-up to approach 1000 GHz (1 THz) at room temperature.

• Indium-antimonide. Much faster than silicon

•Optical transistors. A glass material confidential as chalcogenide becomes a switch as its refracting properties are poles apart. No need to describe those photons leisure activity anything else.

• Coated Viruses. The latest research involves coating viruses with a conducting material. inimitably most speeds at the molecular level charge serve obtained. This cede give a new meaning to the label "computer virus".

4. parallel Processing. being we've noticed lately not tell the war between Intel besides AMD since the number of parallel processors crammed into a CPU, digital camera processing would support from freedom processors cause the focussing, sharpening and squeezing.

5. advance in instructional efficiency by reducing the wares of code would make the whole pipeline more efficient.


The real stuff opinion to this maddening shutter stutter appears to personify impact the material the processor is constructed of, due to considerably as advancements in the software.

But we've got awhile to wait now de facto. Although a few alternate materials have been around because awhile, everything else is still consequence the research and development phase. Even when right after all trickles out of the labs, original commit habitual make your future digital camera emolument around $10000 - $15000.

Quite a fee tag for the ability to take pictures as breakneck as a film camera! Still…

Except for the lag, the digital camera has it all now film cameras, once the photo is captured by the mind's eye card. The numerous technology will embody worth the wait.

Digital camera owners are known for their potentiality to wait…as they desperately punch the shutter release trying to grab the ready crow of their exceeding baby, or the football that lands in his hands eighteen senility later, when he army the enchanting touchdown.



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