| Canon EOS 50D | |
|---|---|
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| Type | Digital Single-lens reflex |
| Sensor | 22.3 x 14.9 mm CMOS |
| Maximum resolution | 4752 x 3168 (15.1 megapixels) |
| Lens type | Interchangeable (EF, EF-S) |
| Shutter | focal-plane |
| Shutter speed range | 30 s to 1/8000 s, bulb |
| Exposure metering | TTL, full aperture, zones |
| Exposure modes | Full auto, programmed, shutter-priority, aperture priority, manual |
| Metering modes | 35-area Evaluative, Partial, Spot, C/Wgt Average |
| Focus areas | 9 user points (cross type) |
| Focus modes | One-shot, AI Servo, AI-Focus, Manual |
| Continuous shooting | 3 or 6.3 frames/second |
| Viewfinder | Optical, pentaprism/ LiveView LCD |
| ASA/ISO range | 100-3200 in 1/3 EV steps; 6400 and 12800 expansion available |
| Flash | pop-up, sync at 1/250 second |
| Flash bracketing | none |
| Focus bracketing | none |
| Custom WB | 7 presets, Auto and custom 2000–10000 Kelvin, 100 K steps |
| WB bracketing | 3 images, +/-9 levels |
| Rear LCD monitor | 3.0 in (76 mm), 640x480 (VGA) pixels |
| Storage | CompactFlash (CF) (Type I or Type II) and Microdrive (max 32GB) |
| Battery | Li-Ion BP-511A rechargeable |
| Dimensions | 146 x 108 x 74 mm |
| Weight | 730 g (body only) |
| Optional battery packs | BP-511A, BP-514, BP-511, BP-512. BG-E2N grip allows use of AA batteries. |
| Made In |  Japan |
| Retail info | |
| MSRP | Body only: €1299 / $1299 |
The Canon EOS 50D is a 15.1-megapixel digital single-lens reflex camera. It is part of the Canon EOS line of cameras and succeeds the EOS 40D.[1]
Canon announced the camera on 26 August 2008.[2] The camera was released on 6 October 2008.
Contents |
Overview and features
The 50D has many similar characteristics to its predecessor, the 40D. This includes various shooting modes, ability to change ISO and white balance, a pop-up flash unit, and an LCD screen. The LCD screen is the same size (3.0") as the 40D but has a higher resolution (640x480 pixels) than any previous model.
The 50D has a higher pixel count (15.1 megapixels), hence higher shooting resolutions than its predecessor, and like the 40D, has a 14-bit RAW format.
The camera has Live View, which Canon first introduced in the 40D[citation needed], which allows photographers to use the LCD screen as the viewfinder. Because the sensor mirror needs to be in the locked position (see Live preview), shutter noise is reduced in this mode. The 50D also has a dedicated LiveView button on it.
- 15.1 megapixel APS-C CMOS sensor
- 3.0 inch VGA LCD monitor
- LiveView mode
- Wide 9 point AF with center cross-type sensors
- Selectable AF and metering modes
- Built in flash
- Canon EOS Integrated Cleaning System
- ISO 100-3200 (6400 and 12800 with custom function)
- Auto correction of vignetting
- Continuous Drive up to 6.3 fps (90 images (JPEG), 16 images (RAW))
- DIGIC 4 image processor
- Canon EF/EF-S Lenses
- Canon EX Speedlites
- PAL/NTSC/HDMI video output
- File Formats include: JPEG, RAW, sRAW1 (7.1 MP) and sRAW2 (3.8 MP)
- RAW & JPEG simultaneous recording
- USB 2.0 computer interface
- BP-511/BP-511A or BP-512/BP-514 Battery Types (BP-511A battery supplied)
- Dimensions 146 x 108 x 74 mm (5.7 x 4.2 x 2.9 in)
- Approx weight 0.730 kg
Improvements
Changes over the 40D include a higher-resolution sensor (15.1 megapixel instead of 10.1 megapixel). The sensor also has better noise control than previous models[citation needed]. The ISO goes up to 3200 in standard mode, and can be increased to 12800 through the use of a custom function. The burst rate is the same as on the 40D, 6.3 frames per second, though the 40D was advertised as 6.5[3].
The camera uses Canon's new DIGIC 4 image processor. The processor delivers more responsive operation, improved color rendition and near-instant start-up time. A new sensor cleaning system has also been introduced. The camera can also use the Canon Wireless File Transmitter WFT-E3/E3A.
The 50D has a 3" screen--the same size as the 40D--but the resolution is 640x480 pixels, which allows it to show more image detail than any of Canon's previous 3" LCD displays. The 50D features two new Autofocus Modes in Liveview and an HDMI port.
The 50D is offered as a body only or in a package with a new EF-S 18-200mm f/3.5-5.6 IS lens or EF 28-135 f/3.5-5.6 IS USM lens.
Image quality and noise
The 50D adds 5 megapixels to an APS-C sized sensor (compared to the 40D), and as a result the size of the individual photosensors has decreased. To offset the increased noise that inevitably results from smaller photosensors, Canon eliminated the gaps between the microlenses covering the photosensors. Thus the microlenses are larger, and capture more light and direct it to the sensor sites[1].
With high quality SLR lenses, more sensor pixels means greater image resolution. Testing shows that 50D pixels (at ISO levels 400 and beyond) exhibit visibly more noise than the 40D[4]. However, some reviews which states certain higher resolution camera being more noisy have been shown to have questionable test methodology due to neglect of the noise/spatial frequency relationship[5].
References
- ^ a b "Canon Camera Museum - Technology Hall - EOS 50D". Canon. 16 November 2008. http://www.canon.com/camera-museum/tech/report/200809/report.html. Retrieved 2008-11-16.
- ^ Canon (26 August 2008). "Outstanding speed and resolution for the discerning photographer: the EOS 50D". Press release. http://www.canon.co.uk/press_centre/press_releases/cameras_accessories/EOS50D_Press_Release.asp. Retrieved 2008-08-26.
- ^ Askey, Phil (October 2007). "Continuous Drive mode". dpreview.com. p. 13. http://www.dpreview.com/reviews/canoneos40d/page13.asp. Retrieved 02 December 2009.
- ^ Askey, Phil (October 2007). "Continuous Drive mode". dpreview.com. p. 18. http://www.dpreview.com/reviews/canoneos40d/page18.asp. Retrieved 02 December 2009.
- ^ "Myth busted: smaller pixels have more noise...". The Digital Picture.com Forum. April 25, 2009. http://community.the-digital-picture.com/forums/t/1055.aspx. Retrieved 02 December 2009.[unreliable source?]
External links
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