Canon EOS 50D with APS-C Size CMOS Sensor

Unlike the 18 months upgrade tradition,Canon has announced the 50D almost exactly a year after the arrival of the EOS 40D, which we're assured will be a sister-model, rather than a replacement. Recent history has seen Canon release new models every 18 months-or-so but it's been a busy year with newcomers such as the Nikon D300 getting a lot of attention in the 40D's keen-amateur/professional segment. The 50D is essentially a 40D body wrapped around a newly-developed 15 megapixel sensor that finally rectifies the situation in which Canon's XXD range trailed the company's entry-level line, in pixel terms. Canon is claiming that the new sensor's design (new manufacturing processes, redesigned photo diodes and micro lenses) mean that despite the higher resolution image noise has improved, something we'll be putting to the test later.

The other big change is the inclusion of a new, high-resolution LCD screen. 920,000 dots mean that it can convey 640 x 480 RGB pixels, making it effectively a VGA standard monitor. Three anti-reflection layers built into the screen do their best to keep it useable in bright conditions, too.

Exceptional Quality Images.
New 15.1 Megapixel CMOS sensor with improved noise reduction, wide range ISO 100-3200 (H1: 6400, H2: 12800), 14-bit conversion for smooth color tones and gradations.

The EOS 50D features a newly-designed 15.1-megapixel APS-C sized CMOS sensor which is capable of recording up to 4752 x 3168 pixels with full 14-bit A/D conversion for extremely fine tonal gradation. Ready to capture images in an instant, the sensor is designed to work with Canon's EF and EF-S lenses with a conversion factor of 1.6x. It's capable of recording at sensitivities previously too noisy for shooting in low light or subjects in motion. With a maximum ISO rating of 12800 combined with a 4-level High ISO speed noise reduction function, images that would have been impossible without the use of a strobe or flash become simple to record.

15.1 Megapixel APS-C Size CMOS Sensor

Canon EOS 50D Basic Features
15.1-megapixel APS-C-sized CMOS sensor with gapless microlenses
6.3 frames per second
3.0-inch LCD with 920,000 pixels
Top Status LCD
ISO range from 100 to 12,800
Shutter speeds 30 seconds to 1/8,000
Compact Flash Type I and II UDMA slots
Lithium-ion battery
5.7 x 4.2 x 2.9 inches (146 x 108 x 74mm)
1.81 pounds (822g) with battery and card, but no lens


Canon EOS 50D Special Features
DIGIC 4 offers faster processing
14-bit A/D conversion
New menu look
Live View with contrast detect AF option
Face detection autofocus in Live View mode
Silent shutter mode in Live View for wildlife shooting
Dedicated Live View button
Peripheral Illumination (vignetting) Correction
Highlight Tone Priority mode
Automatic Lighting Optimizer with multiple levels
New Creative Auto exposure mode gives beginning users more control over background blur and motion blur without having to understand aperture or shutter speed
Three RAW modes: RAW (15.1 megapixels), sRAW1 (7.1 megapixels), and sRAW2 (3.8 megapixels)
RAW modes available in Scene and full-auto modes as well as Creative Zone modes
EOS Integrated Cleaning System for three-phase dust control, removal, and subsequent deletion
Lens AF microadjustment function
Center AF point offers enhanced accuracy along both axes with lenses f/2.8 or faster
Scratch-resistant, anti-glare LCD coating
Capable of bursts of up to 90 Large/Fine JPEGs or 16 RAW images on a UDMA CF card
Multiple levels of noise reduction: Standard/Weak/Strong/None
HDMI output allows display of camera images on HD televisions
UDMA support
Nine cross-type AF sensors
Pentaprism with 0.95x magnification
Mode dial has two Custom modes
My Menu for quick access to common settings
Interchangeable focusing screens
Raw translation software included


In the Box
Canon EOS 50D body
Body cap (plus front and back lens caps if kit is purchased)
Camera strap EW-EOS50D
Battery Charger CG-580
Canon 50D Battery Pack BP-511A
USB cable IFC-200U
Video cable VC-100
Software CD with Digital Photo Professional for RAW conversion
Manuals, registration card

"Pixels" and "CCD size"

In digital camera specifications and the advertisement, "the number of megapixel" is the first thing put into our eyes. The thing so-called pixels, can be understood as a grid components in the photographic settings. The light color and intensity are able to receive to the camera by the unit like such a grid. Therefore, the finer the grid (that is to say, the more pixels), the more detailed particles of the photos. Accordingly the better on the performance of the details on subjects .

Camera specifications have often marked two figures "Total pixels" and "effective pixels". As the name implies Total pixels refers to a total number of pixels in digital camera . But, in fact, the external pixel in camera not used to generate image data.

Therefore, the "effective number of pixels" means the pixels except that pixels not used to genertae image ." for the "effective pixels" will be marked in the existing specifications now, so it's esay to compare this each other in the cameras.

In addition, the photographic element (CCD) size is also very important. Same number of pixels, the greater the photographic element is, the larger size of each pixel will be. The larger size the pixel hae, the amount of data can handle will increase, so the pixels will be able to distinguish the different between micro-light color and intensity. This means a wealth of photos will be able to generated .

Mid-range digital cameras use CCD between 1/2.7-in ~ 1/1.5 inch in general, high-level single-lens reflex camera's CCD will more than 1 inches some times.

Lithium or AA? Which Camera Battery Is Better

Why Lithium Battery

Lithium batteries have a small size, light weight,short charging time . At present, thin shape, fashion beautiful card DC basically using this battery.

AA battery have a large size, is also heavier, so the camera using this battery correspondingly have a larger volume.

AA batteries discharge time become shorter after a dozen times. Lithium batteries can be used a long time relatively, My lithium batteries used 5 years.

Most non-brand AA batteries are so poor that can not be used for shooting, and the good battery is too expensive, and can not charge.

Half of the lithium battery recharge only 2 hours, AA batteries need to charge even one-day.

Why AA Battery

Lithium battery capacity is not great, the general is 600-700mah, only a few have 1000mAh. AA rechargeable nickel-metal hydride batteries have reached at 2500 mAh.

The current lithium batteries have high price, usually spend 50,60 dollars, so it is a large one-time investment of money to prepare a backup battery. If there is no backup battery when encounter no electricity in the shooting, it can only "hope King can not afford", nothing you can do.

If AA battery encountered such a situation, you can buy a temporary contingency alkaline AA batteries everywhere available, there are not hard to buy even the most remote scenic spots. This is obviously a big advantage of AA battery.

If I bought a DC produced few, a few years after the battery match with it might have to stop product, the lithium battery so expensive, can you buy a lot of pieces back-up placed at home?The lithium battery must be recharged in the machine, inconvenient.

I used number of cameras different, feeling the AA battery better, Machines with lithium batteries built in, with the passage of time and aging, consumption declining and battery needs to be replaced.


Not Very Important

Lithium electricity and Ni-MH battery both have not strong memory effect.

Use lithium batteries or AA batteries? in fact, depends on the choice of camera. If you decided to buy a card machine, it basically decided that you can only choose lithium batteries. If you choose manual, feature-rich camera like Canon A-series, generally speaking, you have to choose AA batteries. Ordinary DC use AA is better.

Remember: Which battery to buy is not the most important reason make you to buy the camera.

DISCUSS
Please write your views

Tips in Camera Battery Using and Maintenance

Digital camera is an "electric tiger", which eat a lot of electric, if your battery does not match or pay no attention to saving, the battery will run out when you does not take a few photos. Battery usage could be save by following approach: first, avoid using zoom operation unnecessary; second, to avoid frequent use of flash, flash is a big electrical consumption, we must using as fewer as fewer as we can; Third, use the viewfinder will be better than the LCD when adjust the screen and composition browser. Because most digital cameras are consume more electricity due to open the LCD viewfinder, shut down it will enable the battery backup time growth in two or three times; Fourth, to minimize the use of Continuous function. Most of continuous functions of digital cameras using the cache built-in to preserve digital photos temporarily. Lot of electricity required if use these caches regular. Therefore, to reduce the use of Continuous and dynamic function of the video clips shot will take great help on the power save.   



A lot of tips needed also in rechargeable batteries, rechargeable batteries just bought have very low or no electricity generally, should be charged before use. The charging time depends on the charger and battery used, and the factors such as voltage stability. If this is a battery the first time to use, lithium-ion battery must be charged more than six hours, Ni-MH battery must be more than 14 hours, or you will short the battery life. Normally few charge / discharge process would be taken in order to achieve optimum efficiency. And to ensure the battery life do not charge when when there is residual power in battery. Battery will be very hot After fully charged, loaded in the camera after it cool.
  
Battery cleaning is necessary to avoid the problem of electricity wastage. Maintain both ends of the contact point and the internal battery lid in the battery clean, use a soft, clean dry cloth graze if necessary, do not clean your digital camera, batteries, or charger use sexual or chemical cleaning, such as solubility things. The batteries must be to remove from your digital camera if you plan not to use a digital camera a long time, and full discharge it (some of charger with this feature, if not available, use low resistance electrical short the battery until all the power discharged), stored in dry, cool environment, and not to store the battery with metal objects. Store a battery full charged, we can't put it in purse, pocket, bag or other container with metal objects in to prevent short circuit.

How to Identify Fake Mobile Phone Batteries

Generally genuine mobile phone batteries have following exterior features:      

1, Battery labels using the second printing technology, in a certain light, the color of the bar code part is black than other parts see from the slope, feels with hands, convex than the other parts, all Motorola original batteries have this kind characteristics.      

2,  Zoned with light metal objects, there are across traces similar to pencil on white Department of battery labels surface. 

3, Battery casing made from a special material, very strong, not easily damaged,  The battery unit can not opened by general means.      

4, Batteries have tidy appearance, no extra burr, a certain degree of roughness on the outer surface but feel comfortable, inner surface smooth,  fine longitudinal scratches could be see under the light.      

5, Battery electrodes and cell phone battery sheet have the the same width, "+""-" signed below the battery electrode,  The isolation materials between the charger electrode and the case material are the same, but not integrated.      

6, The battery could be install in the phone comfortability.      

7, Compression part of the battery lock-bit come out appropriate, firmly.      

8, Battery labels clear handwriting, have the battery accessorices model corresponding to this battery.      

9, battery manufacturers should outline clear, anti-counterfeit mark have a good brightness, three-dimensional look. 

10, Have the "sawtooth" burr on the edge of battery labels, this is particularly suited to distinguish between Ericsson Series battery.

Two Important Parameters of The Battery

First of all, I'd like to introduce you two important parameters of the battery - voltage and battery capacity, these two parameters are important criterion in measure of battery performance and attributes.      

Circuit voltage is the electric potential difference between two points. The unit of voltage is V (volts), general one alkaline battery have a voltage of 1.5V, nickel-cadmium batteries and nickel-metal hydride battery are 1.2V, while the lithium-ion battery is 3.6V (a small number of manufacturers' lithium-ion battery have a rated voltage of 3.7V).      

Battery capacity refers to the amount of electricity the battery can stored, express used unit mAh (milliampere hours). We can see it is a composite unit, constitutes multiply by the current units and the time unit. For example, an fully charged battery with 70mA current can be discharge sustained 10 hours in ideal situation, we know that this battery capacity is 700mAh from the section multiplied by discharge current and time, in theory, if discharge it in 700 mA you can only use 1 hours (battery capacity divided by discharge current). In large-scale batteries we would normally use a larger unit of voltage like Ah (An pm) to express (1Ah = 1000mAh).

6 Sony Classic Digtal Cameras

DSC-P/F/V/H/T -- Six Sony Classic Digital Cameras
Since the first digital camera came out, Sony announced five series famous consumptive DC: the Cyber-shot DSC-P, DSC-F, DSC-V, DSC-H, DSC-T. Every series digital camera have the own features, like the sony H series cameras is the long focus camera, the T series is the thin card digital cameras. Now the pixel of the consumptive digital camera even exceed 15M, there will be more larger megpixel cameras in the futrue, but let us recall the some classic sony cameras in our life at one time.


1.Sony Cyber-shot DSC-T100

DC type: card digital camera
Sensor type: Super HAD CCD
Effective pixels: 7.2 million
Optical zoom: 5X
Reduction: IS
Lcd size: 3 inch
Demension: 91.8 × 59.2 × 22.3mm
Battery type: NP-BG1 lithium



2.Sony Cyber-shot DSC-P200

DC type: consumptive digital camera
Sensor type: Super HAD CCD
Effective pixels: 7 million
Optical zoom: 3X
Reduction: No
Lcd size: 1.8 inch
Demension: 104 x 52 x 28mm
Battery type: NP-FR1 lithium




3.Sony Cyber-shot DSC-F505

DC type: consumptive digital camera
Sensor type: Super HAD CCD
Effective pixels: 1.92 million
Optical zoom: 5X
Reduction: No
Lcd size: 2 inch
Demension: 107 x 62 x 136mm
Battery type: NP-FS11 lithium




4.Sony Cyber-shot DSC-V1

DC type: consumptive digital camera
Sensor type: CCD
Effective pixels: 5.09 million
Optical zoom: 4X
Reduction: NO
Lcd size: 1.5 inch
Demension: 99 x 65 x 57mm
Battery type: NP-FC11 lithium



5.Sony Cyber-shot DSC-t3

DC type: Card digital camera
Sensor type: CCD
Effective pixels: 5 million
Optical zoom: 3X
Reduction: NO
Lcd size: 2.5 inch
Demension: 90 x 60 x 18mm
Battery type: NP-FT1 lithium





6.Sony Cyber-shot DSC-T200

DC type: Card digital camera
Sensor type: CCD
Effective pixels: 808 million
Optical zoom: 5X
Reduction: IS
Lcd size: 3.5 inch
Demension: 93.5×59.3×20.4mm
Battery type: NP-BD1 lithium