Digital Camera Image Sensor Size
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Cisco-Linksys Wireless-N Internet Home Monitoring Camera $129.99 Send live audio and video to a smartphone or web browser anywhere in the world! The Cisco-Linksys wireless-N internet home monitoring camera connects to your network wirelessly, and delivers a live audio/video stream to a smartphone or browser anywhere. Also captures video streams and sends email alerts with video clips upon motion detection…. |
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Logitech Alert 750e Outdoor Master Security System with Night Vision $349.99 Keep an eye on things day and night, indoors or out with the Logitech Alert 750e 961-000337 Outdoor Master Security System. Set it up yourself, count on it when you need it. With the Logitech Alert 750e Master Security System you get everything you need, a smart, weatherproof, night-vision camera; powerful software; and free viewing online or on your mobile. Setup is simple, using your existing el… |
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GE 45233 Wireless Camera with Night Vision $35.91 The 45233 Wireless Color Camera features Night Vision technology. Objects and images can be seen in little or no light up to 10 ft. The camera uses a special image sensor that automatically detects available light levels. It turns on/off the Infra-Red (IR) LEDs on the front of the camera. These LEDs provide artificial light that allows the camera to see in the dark. Night Vision will appear as a B… |
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PYLE PLRD92 9-Inch Flip Down Monitor and DVD Player with Wireless FM Modulator/ IR Transmitter $366.99 9” 16:9 wide screen TFT-LCD monitor DVD/ VCD CD-R/RW MP3 patible IR transmitter ready for wireless headphone Built-in FM modulator 640 x 234 pixels resolution: Contrast ratio: 500:1 Viewing angle: 140 (left/right) 120 (top/down) Overhead console with twin dome lights with LED NTSC PAL auto switching multiple systemIncluded remote control… |
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Pyle PLCM35R 3.5-Inch TFT LCD Monitor/Night Vision Rear-View Camera $139.99 3.5” TFT LCD Stand Monitor with 2 video inputsNTSC system Dimensions: 3.8” x 3.5” x 0.7” Brightness: 200 cd/m2 Contrast: 200:1 Camera CMOS waterproof 1 1/4” flush mount housing Image Sensor: OV7910 Color CMOSTotal Pixels: 510 x 492 Resolution: 380 TV lines Night vision low lighting capable 10 I/R LED lights Power supply: DC12V 200Ma… |
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JVC KD-AVX77 El Kameleon DVD/CD/USB Receiver with 5.4-Inch Monitor, Proximity Sensor, Touchscreen Controls, Built-in Bluetooth, iPod/iPhone USB 2.0 $475.99 Amazon.com Product Description Both innovative and stylish, exclusive El Kameleon technology provides the ultimate anti-theft security advantage. The KD-AVX77′s faceplate converts to a stealthy black appearance when the power is turned off–appearing unnoticeable to potential car stereo thieves. Once powered on, El Kameleon comes to life as a full function Multimedia player–complete with a unique… |
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ColorVision Spyder2PRO Win/Mac $249.00 Amazon.com ColorVision spyder2pro is a comprehensive system for professionally calibrating all types of monitorsâincluding front projector displaysâand for creating custom printer profiles for any PrintFIX Plus-supported printer. The Spyder2PRO system includes both the hardware and the software to make sure you workflow begins with accurate, on-screen color. The award-winning Spyder2… |
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Logitech HD Pro Webcam C920, 1080p Widescreen Video Calling and Recording (960-000764) $74.00 The Logitech 960-000764 C920 HD Pro Webcam takes video call quality to another level with its 1080p high-definition video capture. It also has a maximum resolution of 15MP to provide photos with amazing quality. This webcam has a built-in dual stereo microphone, making it ideal for video calls. With these features, video conferencing has never been as much fun; get one now…. |
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Microsoft LifeCam Cinema 720p HD Webcam – Black $37.50 Connect with clients and coworkers in HD720p HD widescreen sensorAuto focusTrueColor technology for bright and colorful videoClearFrame technology for smooth detailed video… |
Digital Photography Help!!?
I know about technology and stuff, but not digital..I have a few questions..
1.The processed quality of a digital photograph depends on its
A.lens size
B.file size
C.image sensor.
D.resolution….im like 90% sure its this one, i just like to be 100%.
2.A__________is one component of a color image.
A.color mode—I think it is color mode, am i correct?
B.RGB
C.GIF
D.channel
3. What kind of lighting comes from a single light source?
A.soft light—I’m not that sure on this one.
B.diffused light
C.automatic flash
D.hard light
4.When side lighting is used at a sharp angle, the photographer can emphasize…….
A.the color of an object
B.the pattern of an object
C.a silhouetted object
D. the texture of an object—is it this one?
5.All cameras contain______(I’m not sure if its A or C)
A.a lens, an aperture and a shutter
B.pixels, an image sensor, and memory cards.
C.a lens and a shutter
D.an LCD panel and a lens.
1. A combination of lens quality, sensor size and quality of post processing .. but in the end it falls on the photographer to use their skills, NO different from using film
2. This is a very poor question …
3. An unmodified single light will provide hard lighting
4. D is correct
5. A is the only choice .. C leaves out the aperture
Okay all that said, what do these questions have to do with the practical application of the skills you learned in class. Tests like this are a waste of time. I grade my students on their completion of each assignment, 50% on technical perfection and 50% on creativity. Extra credit is given for class participation.
At the end of the course, there is a final presentation and a review of the students notes. The completeness of the notes are worth 5% of the total grade … an excellent book of notes with additional research can add an additional 5% to their total grade.
As Ben Franklin said, “Tell me and I forget. Teach me and I remember. Involve me and I learn.”
Photographic Moment Episode 12: Digital SLRs and Image Sensor Size
Digital Cameras Explained
A lot of digital cameras can be found on the market today. There are tens of brands with hundreds of models. It becomes a problem usually if one has to choose out of such a wide variety.
A digital camera like an analog camera has a lens in front with a photosensitive sensor behind it, which in case of an analog camera is the photosensitive film. The sensor is an analog circuitry with electronics converting the light falling on it into digital signals, which are then processed and stored onto the cameras memory. Smaller or compact cameras have small sensors while SLRs tend to have bigger sensors. They make the camera bigger but their quality is better. The sensor as stated is an analog device. As a general rule, the smaller an electronic device is, the more noise it tends to produce. In case of compact cameras, the sensors are smaller, so as to save space inside the camera’s already small body and that is why compact cameras tend to have lower quality images. On the other hand, images from an SLR are of better quality because of its sensor size(others reasons also, but sensor is one of the main).
With an analog camera, the film has speed, printed as ISO 100, 200, 400, 800… The film speed is basically the level of sensitivity of the film. An ISO 200 film is twice as sensitive as an ISO 100 film. This means that it requires half as light to produce a picture of the same brightness as an ISO 100 film. In digital cameras, one can also set the speed of the sensor, it’s also marked in ISO 100, 200 and so on. As the sensor in digital cameras is an electronic device, an amplifier is used to amplify the signal from the sensor. The problem with such a system is, that by amplifying the signal, the noise from the sensor is also amplified and therefore is more visible in images as a result. This can be clearly seen in digital images from cameras where higher ISO settings has been used. But this on the other hand gives an advantage, as stated earlier of higher speed or lesser requirement for light.
With digital cameras, images are stored on memory cards. This makes it easy to make copies and with software available readily on the market, editing can also be done.
Different cameras have different functionalities. Chosing a camera can be a daunting task but if one has his/her requirements and usage in mind it’s just a matter of little research until one finds what he or she wants.
About the Author
Just a common guy with a degree in engineering. Working as a developer for an electronics company.