What's the difference between Canon SLR 550D and 500D?

As an alternative model of 500D, the performance of Canon 550D has been comprehensively improved, and the overall performance can also be described as comprehensive transcendence. In line with the principle of buying new digital products instead of old ones, there is basically no problem in choosing 550D.

Comparison of New and Improved Functions of Canon 550D

1,180000 pixel improved CMOS photosensitive element (15 1 10000 pixel CMOS is 500D).

Canon 550D is equipped with a new CMOS image sensor with about18 million effective pixels, which can achieve high-precision performance. This CMOS image sensor, developed and produced by Canon, has achieved a unit pixel area of 4.3×4.3 microns under the new technology with higher integration. Not only that, it also has high-speed 4-channel data reading performance, supports wide ISO sensitivity range of 100- 12800, real-time display shooting function and full HD short film shooting function.

Multi-channel data reading, Canon 550D can read 14 bits of large-capacity data at high speed, and the effective pixel is about18 million. Therefore, continuous shooting speed of about 3.7 frames per second and full HD (resolution 1920× 1080) short film shooting of about 30 frames per second can be realized.

The CMOS image sensor carried by Canon 550D adopts a brand-new photodiode structure, which improves the aperture ratio (photoelectric conversion efficiency). At the same time, the transistor inside the pixel is improved to improve the signal-to-noise ratio. Because noise is better suppressed, the common ISO sensitivity range is extended to ISO 100-6400. In addition, the dynamic range has also been expanded, and even when shooting at high ISO sensitivity, the camera can obtain rich hierarchical performance.

Canon 550D adopts seamless microlens, which can improve the light concentration. Gap-free microlens is a high-end technology to improve light concentration by changing the shape of microlens and eliminating the gap between adjacent microlenses. In addition, the distance between microlens and photodiode is shortened, and the concentration of light is also improved. Therefore, low noise shooting at high ISO sensitivity can be achieved.

2. Brand-new LCD(550D is 3 inches, 3: 2, 1.04 million dots; 500D is 3 inches, 4: 3,920,000)

The back LCD of Canon 550D is a 3.0 "widescreen LCD with an aspect ratio of 3:2. The general digital SLR camera, including 550D, has an aspect ratio of 3:2, so the captured image can be displayed in full screen. In addition, the high-definition image quality of the rear LCD is about 6.5438+0.04 million points. The visibility of real-time display shooting and short film shooting is also very high. When the display is enlarged, sufficient resolution can also be obtained, and the focus of the image can be easily confirmed.

The liquid crystal display on the back of Canon 550D is coated with five layers. Especially the anti-reflection coating, by coating 1 layer on the liquid crystal panel and 1 layer on both sides of the resin protective layer, a total of three anti-reflection coatings are coated to reduce the reflected light. Outside the sun room, the reflection of the LCD on the back is suppressed to ensure its good visibility. In addition, the 1 fluorine coating is used to prevent the adhesion of dirt such as dust. Moreover, in order to prevent scratches, a 1 hard coating is applied, and five layers of coatings act separately to ensure the LCD screen is clear. The brightness of the LCD on the back is adjustable in 7 levels, which can be adjusted according to the shooting environment to obtain better visibility.

3.63 zone double-layer photometric sensor (500D is a zone 35 sensor, which can't sense color).

In order to get more suitable exposure, Canon 550D adopts the same 63-zone double-layer photometric sensor as the high-end model 7D. Photometric sensor is equipped with color detection function, which can detect the color information of red light and blue light in RGB. When shooting, you can correct the exposure deviation and focus error caused by the type of light source or the color of the subject.

Canon 550D's exposure compensation range can reach level 5, so it can easily show the extreme high-profile and low-key. This function can also be used flexibly in HDR (Presentation Technology). In this case, multiple images with different exposures are shot and synthesized.

4, a variety of short film shooting functions (7 times digital zoom short film editing, short film shooting special menu, full manual control, etc. )

Canon 550D is equipped with short film clipping function with digital expansion of about 7 times, which refers to the function of cutting out local images when shooting short films and recording them with standard definition quality (resolution 640×480, 60 frames/second or 50 frames/second). This can achieve a telephoto effect of about 7 times the effective focal length of the lens. For example, if you use a standard lens of 50mm, you can get a telephoto effect equivalent to a focal length of about 560mm (converted into a focal length of 35mm) by shooting with this function. It can play a great role in shooting close-ups of inaccessible objects such as wild animals. Note: the telephoto effect of the short film cutting function of about 7 times cannot be changed at will, that is, the digital zoom ratio cannot be selected at will.

In short film mode, you can use manual exposure to set shutter speed, aperture value and ISO sensitivity. Because exposure can be controlled manually, when shooting scenes with a large proportion of the sky or very dark white subjects, scenes that are difficult to be shot by general exposure control can also be exposed appropriately. By fixing the exposure settings, you can get a stable exposure even if you shake the camera up and down. You can also consciously show high-profile or low-key effects. In addition, when automatic exposure is used, exposure compensation of +/-3 levels can be performed.

Canon 550D adopts high-end technology that can suppress noise, and can shoot short films with ISO sensitivity as high as ISO 6400. Therefore, even in a dark room or at night with less light, you can actively shoot short films. If a large aperture fixed-focus lens is used, the shooting field will be further expanded.

When shooting a short film by manual exposure, you can suppress the overflow of highlights by turning on the priority of highlight tone, and shoot a short film with smooth hierarchical transition. For example, when shooting white clouds and blue sky, or shooting a wedding scene with a black tuxedo and a white wedding dress, the brightness of the picture varies greatly. Using this function can play a very good role.

5, the central focus on improvement

Canon 550D has 9 autofocus points. Nine focus points are widely distributed in the viewfinder, which is convenient for autofocus under various compositions. At 8 o'clock except the central autofocus point, a single set of corresponding F5.6 beam detection horizontal autofocus sensors which are good at capturing the subject is installed. Three groups of linear autofocus sensors are arranged in a cross shape at the central autofocus point, which further improves the capture speed and accuracy of autofocus. Specifically, the central autofocus point has not only the autofocus sensor corresponding to the transverse line of F5.6 beam detection, but also the autofocus sensor corresponding to the longitudinal line of F5.6 beam detection and the autofocus sensor corresponding to the longitudinal line of F2.8 beam detection, which has higher focusing accuracy. Therefore, when installing a lens with a maximum aperture greater than or equal to F2.8, the central autofocus point can use the corresponding F5.6 beam autofocus sensor and the corresponding F2.8 beam autofocus sensor to focus more accurately, thus achieving high-speed capture and accurate focusing of the subject. (Canon 500D has only two sensors, and the central focus is distributed in a cross shape. )

6. Automatic ISO can set the upper limit manually.

When Canon 550D selects the creative shooting area mode, it can change the maximum value automatically selected by the camera ISO sensitivity through the ISO automatic maximum setting function. It can be set within the range of ISO 400-6400, and the unit is 1. For example, in a shooting scene where image quality is the priority, the highest value can be set to ISO 400 to control the generation of noise; When you want to shoot at a higher shutter speed, you can set the highest value to ISO 6400, and users can choose different ISO sensitivities according to the scene.

7. continuous shooting's speed is a little high, but the number of sheets in continuous shooting has dropped (the number of sheets in continuous shooting has declined).

Canon 550D can achieve a continuous shooting speed of about 3.7 frames per second in both single autofocus mode and artificial intelligence servo autofocus mode. About18 million effective pixels, although the amount of data processing required for each image has increased, the maximum number of JPEG (large/thin) shots is about 34. In addition, the maximum number of shots in 14-bit RAW quality is about 6. (Under the quality of 14-bit RAW, the maximum number of shots in 500D is 9. )

8. Brand-new battery, supporting SDXC mass memory card (SDXC card is not supported in 500D).

Canon 550D uses a new battery LP-E8, and its capacity is improved (8. 1Wh: 7.4Wh) compared with the battery LP-E5 used in 500D. When using the optical viewfinder to shoot still images, you can shoot about 550 pictures (when there is no flash at 23℃). In addition, even in high-power real-time display and short film shooting, the large-capacity battery allows users to enjoy long-term shooting.

In addition, Canon 550D also supports large-capacity SDXC cards. Compared with the SDHC card with a maximum capacity of only 32GB, the SDXC card has a maximum capacity of 2TB(2000GB).

9. Add Q key (speed control button)

Canon 550D is equipped with speed control screen function, which can directly and conveniently adjust aperture value, ISO sensitivity, metering mode and image quality. In the same picture (under different shooting modes, the adjustable setting items on the speed control picture are different. ) camera settings without having to choose from different menus. Various functions are displayed in large fonts and icons on the screen of the speed control screen, which is very easy for even entry-level users to operate. Moreover, the 550D is equipped with a speed control button to display the speed control screen, which further improves the operability.

10, you can add copyright information.

Canon 550D can input the author and copyright details in the camera to prevent unauthorized use by third parties. Input information is added to the captured image data in Exif data format. Using the software supporting Exif specification, you can confirm the input copyright information, or you can confirm it through the original Canon software digital photo professionals attached to the 550D.

1 1, supports HDMI-CEC, and can be controlled by TV remote controller.

Canon 550D supports HDMI-CEC specification. Use the HDMI cable HTC- 100 (sold separately) to connect the camera to an HDMI-CEC-compatible TV, and you can remotely operate 550D video playback through the TV remote controller. The so-called HDMI-CEC specification refers to the industry specification that transmits control signals through HDMI cables, thus connecting all devices and making universal operation possible. Under this specification, the common operation of multiple audio-visual devices can be realized.

550D can display 9 still image indexes, play slides, display shooting information, rotate images and play short films through the TV remote control.

Many parts and technologies of Canon 550D are shared with the middle and advanced digital SLR 7D, and its performance has indeed reached the peak of the current entry-level digital SLR. As an updated product, the 550D has indeed completely surpassed the old 500D. I believe that as long as the inventory of the 500D is almost cleared and the price of the 550D comes down, everyone will soon forget the once brilliant model of the 500D.