Canon EOS 20D

Type:	Digital autofocus / AE reflex camera
Lens :	EF and EF-S lenses
Lens connection :	Canon EF-S bayonet (including EF lenses )
Image sensor :	CMOS
Sensor size:	APS-C (22.5 mm × 15.0 mm)
Resolution :	8.2 megapixels
Image size:	3,504 × 2,336 pixels
Format factor :	1.6
Aspect ratio :	3: 2
File formats :	JPEG , RAW (12 bit), DPOF
Exposure index :	100–1,600, expandable to 3,200
Viewfinder :	Roof prism finder
Field of view :	approx. 95%
Enlargement:	0.88 times
Viewfinder display:	Aperture, exposure time, AF information, flash information, white balance correction, ISO value, buffer memory?
Screen :	TFT color monitor
Size:	4.6 cm (1.8 ")
Resolution:	about 232 × 174 pixels (40,368 pixels), 161 ppi
Operating modes:	Single image, continuous shooting, high-speed continuous shooting, self-timer
Frame rate :	5 frames per second
Number of continuous exposures:	23
Auto focus (AF) :	TTL-CT-SIR with CMOS sensor
AF points:	9 AF points
AF measuring range:	Cross sensor
AF modes:	ONE SHOT, AI SERVO, AI FOCUS, (picture can only be taken after focusing, moving subject is tracked with focus tracking, automatic switching between One Shot and AI Servo)
Exposure metering :	Multi-field metering, selective metering, center-weighted integral metering
Regulation:	automatically or manually
Correction :	± 2 EV in 1/3 or 1/2 steps
Closure :	electronically controlled focal plane shutter
Shutter speed :	30–1 / 8,000 s and Bulb
Lightning :	Auto pop-out flash
Guide number :	13 at ISO 100
Flash control:	E-TTL-II auto flash
Lightning connection :	Standard ISO shoe and flash socket
Synchronization :	1st or 2nd shutter curtain
Exposure compensation :	Manual: ± 2 steps in 1/3 or 1/2 steps
Flash functions:	Modeling light, pre-flash to reduce the red-eye effect
Color space :	sRGB , Adobe RGB
White balance :	automatically, manually or via data transfer
Storage media :	CompactFlash
Data interface :	USB
Video interface:	PAL / NTSC , no film recording possible
Direct printing:	Yes
Power supply:	AC adapter ACK-E2, compact adapter CA-PS400, battery charger CB-5L, Battery Charger CG-570, Car Charger Cable CR-560, BP-511
Casing:	Magnesium alloy
Dimensions:	approx. (144 × 105.5 × 71.5) mm³
Weight:	approx. 685 g (without battery and memory card)
Additions:	Remote control via software

The Canon EOS 20D is a digital SLR camera from the Japanese manufacturer Canon , which was launched on the market in September 2004. It is no longer produced.

technical features

The CMOS sensor in APS-C format delivers images at the highest resolution with a resolution of 3504 × 2336 pixels (effective 8.2 million pixels). The camera can take up to 23 images in a row at five images per second. The autofocus has nine measuring fields with a display of the active measuring points in the viewfinder. The images are saved on a CF card and can be transferred to a USB host via a USB 2.0 port . A DIGIC II processor works in the camera .

In flash mode, the camera can only handle E-TTL or E-TTL2 mode, so older system flashes such as the Canon Speedlite 540EZ only work in manual mode or, like the Canon ML-3 ring flash, do not ignite at all. The manufacturer therefore recommends the use of E-TTL-compatible devices from the EX series, such as B. the Canon Speedlite 580EX .

The Canon EF-S - lens mount , allows the connection of Canon lenses EF-S series, by the smaller image circle are specially designed for digital cameras with APS-C sensors and fit entirely on that bayonet. It is also possible to use Canon EF lenses or optics from other manufacturers. Adapters also make other 35mm lenses usable, e.g. B. those with M42 screw thread . The camera housing itself is made of magnesium .

Model variant EOS 20Da

Canon EOS 20Da

The EOS 20Da model is a special version of the camera designed for astrophotography . It has a modified low-pass filter that less attenuates the wavelength range around the alpha line of hydrogen ( H α, Fraunhofer line ) , which is important for astronomical observations . In addition, a focusing aid was built in, which facilitates manual focusing with the help of an enlarged representation on the display, which greatly simplifies operation on telescopes.