Well that's it really. What happens to the sensor over time? Each photocell is being fed a voltage every time we make an image. How long does a sensor last and is there loss in image quality the more one uses the camera?

Im about to buy a used camera (Sony A9). My question is with DSLR there is the shutter count amount, that indicates about how much use there has been with the camera, excluding video. So you can estimate the amount of use of the camera/sensor.


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4. There is a 2 year warranty for the used camera, but I asume sensor wear is not included usually on Sony/reseller warranty. What are the most critical parts that I should be aware when buying a used camera.

The used camera is 800$ less than a new one thats why im intersted. For my peace of mind I just wanna know how to be sure the sensor/IBIS etc are in good condition, and it would last me as long as buying a new one.

The shutter on the A9 is rated for 500,000 cycles, so 5,000 actuations is nothing and suggests a camera that has only been lightly used. What's the rest of the camera condition like - is it consistent with light use? If it's had a hard life and been used for primarily video work then I would expect to see signs of wear on the camera body itself

Of course modern digital cameras are marvels of electrical and mechanical design, and there is plenty to go wrong with them. Dropping onto the ground and submersion into water seem to be the most common sources of failure.

A camera imaging sensor is an entirely electronic device - like a computer or a radio - so it doesn't really wear out. A sensor can be abused by improper cleaning and use. You can check for abuse by looking at the sensor and just taking some photos.

The shutter is a mechanical device that's mounted on top of the sensor. Since it's mechanical it can wear out. Just like the mileage of a used car, the shutter count indicates how much the camera has been used. Also like a high-mileage used car, a camera with a high shutter count may fail tomorrow or years from now. The price of a high-shutter count camera should be lower to reflect this risk that you, as the buyer, is agreeing to accept.

Used camera dealers in the USA will usually allow a few days for the buyer to examine the camera and return it for a full refund if they don't like it. Some dealers will offer a warranty for a few weeks or months. It's important that the buyer (that's you) read the fine print to learn about these details.

No mirrorless camera has shutter nor mirror covering the sensor. I have moved to mirrorless since the Sony nex6. It's 8 years ago. I own 8 mirrorless cameras and by simply paying attention I have only had to send sensor for cleaning twice on two different bodies.

Thanks, to you and everyone else, I feel confident of buying the used camera now. Only thing I will just consider before I buy is the 2 year warranty vs 5 year warranty with (800 $ more). If there is a button failure etc after the 2 year period maybe I can get is fixed for under 800 $ so it would even it out.

The LowePro PhotoSport Outdoor is a camera pack for photographers who also need a well-designed daypack for hiking and other outdoor use. If that sounds like you, the PhotoSport Outdoor may be a great choice, but as with any hybrid product, there are a few tradeoffs.

If you want a compact camera that produces great quality photos without the hassle of changing lenses, there are plenty of choices available for every budget. Read on to find out which portable enthusiast compacts are our favorites.

What's the best camera for travel? Good travel cameras should be small, versatile, and offer good image quality. In this buying guide we've rounded-up several great cameras for travel and recommended the best.

Above $2500 cameras tend to become increasingly specialized, making it difficult to select a 'best' option. We case our eye over the options costing more than $2500 but less than $4000, to find the best all-rounder.

Body-worn cameras are widely used by state and local law enforcement agencies in the United States. They are worn principally by officers in the performance of duties that require open and direct contact with the public. Despite their widespread and growing adoption, the current evidence regarding the effectiveness of body-worn cameras is mixed. Some studies suggest that body-worn cameras may offer benefits while others show either no impact or possible negative effects. The mixed results of these studies strongly imply that additional research is needed. In particular, more studies employing randomized control trials [1] are needed.

Based on these reviews and the existing research on the impact of body-worn cameras use, it is clear that further research is essential to determine the value of body-worn cameras use and potentially the more effective ways body-worn cameras could be deployed. Given the growing use of body-worn cameras, it would be best to build in rigorous evaluations as law enforcement agencies expand their use of this technology.

Developed by the NIJ-funded NLECTC Sensor, Surveillance and Biometric Technologies Center of Excellence, A Primer on Body-Worn Cameras for Law Enforcement provides an introduction to body-worn camera systems. The report discusses the functions and features of body-worn camera systems and highlights issues and factors that law enforcement organizations should consider before and during implementation.

Agencies should consider how body worn cameras will meet their mission needs and requirements prior to procurement and use of the technology. To provide general guidance to law enforcement practitioners, NIJ, NIST and the FBI developed a table listing operating characteristics and associated functionality descriptions based on existing technical resources about criminal justice use of video.[5],[6] The operating characteristics and associated functionality descriptions in the table can help agencies determine what they need as they consider the commercial products available.

Having said the above, I do shoot small amounts of video and only experienced camera shutdown on a Sony Nex7. The other cameras 7DII and 5DIV don't shut down. I've never observed any noticeable image quality change so what little they may change over a few years of use is insignificant.

it was explained to me that camera shutter failure will occur more likely sooner and more often than sensor failure...meaning video usage won't shorten the life of your camera as much as taking photos with the shutter mechanism. hope that makes sense...cheers.

silicon is the very most common base material, but any material that can be 'grown' with very high purity and then 'doped/mixed' with another material which turns it FROM either a conductor (most usual) or insulator into a material that will 'release/generate' electrons when struck by energy known as 'photons' (light) can be used as a 'camera' sensor-a semiconductor-neither a normal conductor nor insulator-but can be made to conduct electrons in a controlled manner.

Answer: so NO there is no difference of a normal tv video sensor (although normally 1/3" or 2/3" size, some use 3 such sensors, 1 for each color for increased sensistivity) vs the camera sensors we use. ff782bc1db

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