EOS 50D SLR
EOS 50D SLR
Canon EOS 50D SLR Review
By Movable Type Admin
Features & Controls
Like the 40D, the 50D uses magnesium alloy and an integrated grip to give the body a light yet very sturdy feel. The same basic shape and control layout make it an easy adjustment for anyone upgrading from a previous Canon EOS model camera. It also also includes the sealing material lining that was introduced on the 40D to improve the dust and water resistance.
Canon's newly-designed 15.1-megapixel APS-C sized CMOS sensor 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.
Making its debut on the 50D is Canon's new DIGIC 4 processor.
Using advanced signal processing technologies provide faster operations, finer details and more natural color reproduction than the previous Digic III processor. It also allows the camera to enable Face Detection Live mode that can detect and focus up to 35 faces. Featuring the improved Auto Lighting Optimizer, the camera corrects brightness and contrast automatically. Finally it allows for Peripheral Illumination Correction for up to 40 of Canon's EF lenses.
While it is based on the EOS 30D's mechanical shutter unit, the shutter of the EOS 50D is now more reliable with a
contactless switch instead of a contact switch for running the 1st and 2nd curtains. Shutter durability is approximately
100,000 cycles, the same as the EOS 30D's shutter. The shutter release lag time with SW-1 ON is approximately
0.059 sec. between SW-2 ON and start of exposure. The time lag between simultaneous SW-1/SW-2 ON and the start
of exposure is approximately 0.126 sec. Time lag is calculated with the aperture stopped down 3.5 stops or less and
excludes AF operation time. Viewfinder blackout time is about 0.1 sec.
EOS 50D is compatible with all Canon lenses in the EF and EF-S lineup, ranging from ultra-wide angle to super telephoto
lenses. Canon lenses employ advanced optical expertise and micron-precision engineering to deliver unprecedented
performance in all facets of the photographic process. Special optical technologies, such as Aspherical, ultra-low dispersion,
or fluorite elements are featured in the universally acclaimed L Series lenses, and Canon's Optical Image Stabilizer
technology in select lenses minimizes the effect of camera shake. Using Canon lenses, photographers can truly
maximize the quality and performance of the EOS 50D.
Using Canon's new 18-200mm f/3.5-5.6 EF-S IS, you will appreciate the lightweight and compact lens with the wide magnification range. This standard zoom lens features a wide focal length range from normal to telephoto equivalent to 29-320mm in the 35mm format. It features an Optical Image Stabilizer for up to 4-stops of effective correction even at full zoom. Since Canon's optical image stabilization system is in the lens, not in the camera, you can see the stabilized, steadier images through the viewfinder. And the circular aperture can give beautiful background blur effects.
Each IS lens system is designed and optimized for its specific
application, yielding a level of performance unattainable by in-body, shifting-sensor techniques. Additionally, you
see the image stabilization effect in the viewfinder. The image is steady; accurate framing is possible; the AF
point can be placed precisely, and the photographer can concentrate on the shot and capture the best moment.
The flash unit in the EOS 50D is the same as the unit in the EOS 40D. Its Guide Number is 43/13 (feet/meters) at ISO 100.
Flash coverage is effective for focal lengths 17mm and higher, with some limitations based on the size of the lens.
If the built-in flash is fired rapidly in succession, the flash firing will be stopped to prevent heat damage to the built-in flash
cover and fresnel lens (diffuser).
The new Canon Speedlite 430EX II is the ideal accessory for the Rebel XS. It has a maximum guide number of 141 ft./43m at ISO 100. This unit is also great for bounce flash, with a tilting and swiveling flash head. It automatically zooms the flash head to cover lenses ranging from 24mm up to 105mm or longer with the EOS Rebel XS. Of course, it works with the camera to provide full E-TTL II automatic flash exposure. The 430EX also has a powerful AF-assist beam, which allows the camera to autofocus in near total darkness, on subjects as far as 32.8 ft. (10m) from the camera. Improving on the previous model (the 430EX), the new 430EX II is quieter, offers full flash control from the camera menu with compatible EOS Digital SLR cameras, has a faster recycle time ( approx. 20% faster than the 430EX), and since it is compatible with Canon's wireless E-TTL, the 430EX II can be used as an affordable "slave unit".
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