Performance Design And Construction

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LCD Monitor The most obvious external difference between the EOS 20D and the EOS 30D is the new 2.5-inch, 230,00-pixel TFT liquid-crystal monitor with its 170° wide viewing angle and six LED backlight modules. This is the same monitor used on the EOS-1D Mark II N and the EOS 5D, both released in the autumn of 2005. Compared with the unit on the EOS 20D, the new monitor has a viewing angle 1.94 times larger in all directions, is much easier to see in daylight, and has a font size about twice as large and 10% wider. The monitor has approximately 100% coverage for JPEG images and 5 levels of brightness adjustment with a gray chart displayed along with the image.

Design and Construction Some changes have been made to move the EOS 30D in the direction of the EOS 5D.

The new, large monitor is unmistakable. (It accounts for a 20g increase in camera weight.) Shapes around the flash head and lens mount have been changed subtly to suggest Canon's upper-range models. The mode dial now has a metallic finish. The grip below the shutter button has been extended for better purchase with the middle fingers and improved overall handling. A new groove where the middle finger falls improves comfort and security. The body is 2mm thicker than the EOS 20D's, also enhancing comfort and security. Indented surrounds have been added to the row of four buttons on the back of the camera and the Delete key has been given its own location. Like the EOS 20D, the 30D is compact, solid, elegant, durable and purposeful. It is easy to carry and a delight to hold and use. The real design and construction story, though, is the extent to which numerous internal changes have made the EOS 30D a meaningful upgrade over the EOS 20D.

Like the EOS 20D, the EOS 30D's top, front and rear covers are made of a very light and strong magnesium alloy. Also, the left cover, where the USB port, video port and other external interface terminals are located, is made of special engineering plastic which also serves as an electromagnetic shield.

The main body is made of a stainless steel chassis and the mirror box is made of high-strength engineering plastic. Also, the lens mount and imaging element are fixed on the mirror box so that the flange focal distance does not change due to static pressure caused by the mounted lens. The mirror box is fixed solidly on the chassis to attain a body precision on a par with the EOS 20D.

The external paint is the same high-quality black satin leathery finish found on the EOS 5D. It suppresses fingernail scratches and the finer grain of the satin finish makes the

camera more comfortable to grasp.

The EOS 30D's basic internal construction and major parts configuration are the same as those of the EOS 20D. However, parts count data reveal the extent to which the EOS 30D has been reconsidered. The number of circuit boards, 28, is the same as in the EOS 20D, but lead wires have been reduced from 19 to 15. Optical parts count is the same, 20, but mechanical parts have risen from 301 to 338 and electrical parts have risen from 826 to 898. Screws and washers have declined slightly, from 167 to 164. In this tally, the shutter unit and DC/DC converter each count as one unit and the E-ring counts as a washer. It is clear from this and from the following discussion that the EOS 20D got a thorough going-through and that extensive changes have been made to enhance mechanical and electrical reliability, reduce sources of noise and improve overall performance.

The EOS 30D's basic circuit board configuration is based on the EOS 20D's. There are six rigid, printed boards centering on the digital control and camera control circuit boards, and 22 flexible printed boards on which the sensor and switches are mounted. It is different from the EOS 20D in that the 2.5-inch TFT monitor is incorporated; adaptation has been made for a different AE sensor package and soldering by hand has been eliminated.

The digital control circuit board is a highly integrated 10-layer board. It contains the following: the ADIC that converts the output from the CMOS sensor into digital signals, the imaging signal processing circuit that includes the IC that generates the CMOS sensor's drive pulse, the digital imaging processing circuit that includes the DiG!C II, the memory circuit that includes the DDR SDRAM for the image buffer memory, and other items such as the TFT liquid-crystal control circuit. The board's number 2 and 9 layers are GND layers to prevent signal interference between the external-layer pattern and the internal-layer pattern and to prevent undesirable phenomena caused by noise.

The camera control circuit board has six layers. It contains the following: the main microcomputer IC that regulates the camera's operation by controlling the various sensors and mechanical components, the display panel and viewfinder display drive control, the display microcomputer IC that controls various switches and the EEPROM that retains adjustment data (AE, AF, etc).

Mark Usb Control Circuit

To make the camera smaller, the external interface connection circuit board has been separated from the digital control board and both sides are used. It has the USB port (MINI B), conforming to USB 2.0 Hi-Speed, and the video OUT terminal.

The double-sided flash circuit board is the same as the unit in the EOS 20D. It has the flash circuitry, electronic X circuit and the camera orientation circuit.

The power source circuit board has four layers. It has the power source circuits that generate the voltage necessary to operate the camera's circuits.

The sixth, rigid, printed board is on the improved shutter unit.

EF-S 17-55mm f/2.8 IS USM

New Lenses Two new and very different lenses that professional and advanced amateur photographers will find exceptionally appealing will become available at roughly the time that the EOS 30D reaches dealers. They are a large aperture standard zoom and an ultra-fast medium telephoto.

The EF-S 17-55mm f/2.8 IS USM offers superb image quality, on a par with L Series lenses. It has a large maximum aperture which, combined with higher shutter speeds, can minimize subject motion blur. Shallow depth-of-field for separation of a subject from its background is much easier to achieve. The f/2.8 maximum aperture allows a bright finder and extremely precise focusing with f/2.8-compatible AF sensors. The internal stabilization has a sharpness benefit equivalent to a three stop faster shutter speed. Combining f/2.8 with IS makes the new lens outstanding in low light. As an EF-S lens, the new zoom is smaller, lighter and handier than a lens of similar specifications could be, but covers the full 24 x 36mm frame. This new lens would certainly be the "best match" for the EOS 30D except that it causes some vignetting when the built-in flash is used. The EF-S 17-55mm f/2.8 IS USM is expected to retail for $1,149 and is sure to be adopted by photographers of every sort.

The EF 85mm f/l.2L II USM is a revision of the EF85mm f/l.2L USM lens introduced in 1989. Its enormous maximum aperture and handy focal length made it a favorite of wedding, portrait and sports photographers. While its image quality has remained a benchmark, general improvements in AF speed over its years of service make it an excellent candidate for an AF update. A ring EF 85mm f/1.2L" USM USM drive, a high-speed CPU and optimized AF algorithms achieve a great increase in AF speed over the older lens (roughly 1.8x, depending upon camera and conditions). Lens coatings have been optimized as well, minimizing ghosting and flare. Distance information is now provided for flash exposure calculations. The new lens now has a round aperture that helps to produce a beautiful background blur. The new 85mm has the same optical system as its predecessor, 8 elements in 7 groups.

The ground aspherical element, in the third position from the front, minimizes aberrations and provides superb image quality with high resolution and high contrast, even at maximum aperture, true to its L Series heritage. The lens uses a floating construction in which the final group (lens element 8) is fixed and the other lens groups

extend during focusing, suppressing aberration variations at medium and short distances and achieving excellent imaging performance over the entire imaging area.

In sum, wedding.portrait and sports shooters(primarily), as well as fashion photographers and anyone else with an interest in excellent and unique optics, will find the EF 85mm f/1.2L II USM an alluring and sophisticated tool. Itis expected to retail for $2,099.

er oomm 1/1.2L Ii usm cr-ö i/-oomm 1/2.0 is usm er oomm 1/1.2L Ii usm

MTF Graph for EF 05mm f/1.2L II USM

Corrective optics

MTF Graph for EF-S 17-00mm f/2.8 IS USM

Corrective optics

MTF Graph for EF 05mm f/1.2L II USM

MTF Graph for EF-S 17-00mm f/2.8 IS USM




Spatial frequency

Maximum aperture


10 lines/mm

10 lines/mm

10 lines/mm

30 lines/mm

30 lines/mm

30 lines/mm

Spatial frequency (10 lines/mm)

— Radial condition — Concentric condition Spatial frequency (30 lines/mm)

— Radial condition — Concentric condition

• The closer the blue (10 lines/mm) line is to 1, the higher the contrast.

• The closer the black (10 lines/mm) line is to 1, the higher the resolution.

AF speed comparison

AF speed comparison

0.95(m) (Subject distance)

Circular Aperture ComparisLn f/1 4 f/1.3 1/2

Circular Aperture ComparisLn f/1 4 f/1.3 1/2

Shutter Release Although the shutter release mechanism is the same as the EOS 20D's, the EOS 30D's Mechanism shutter button now allows the user to press it completely to take a picture, return it to the halfway position and then press it again to take another picture. This change responds to requests by EOS 10D and 20D users and works the same way as with EOS-1 Series cameras and the EOS 5D. The shutter release time lag from SW-1 ON is approximately 65 ms. (stop down within 3.5 stops ofthe maximum aperture) and the viewfinder blackout time is approximately 110 ms. Both are equal to or shorter than times on the EOS 20D.

Drive Speed and Burst The EOS 30D has a new drive mode called "Low-Speed continuous." Its maximum speed Performance is 3 fps. This feature has been added in response to users' interest in specifying the number of continuous shooting frames and their request for longer continuous shooting even if fewer frames per second is the consequence. Users now have a choice of four drive modes; the other three are single, high-speed continuous and self- timer. An H mark has been added beside the continuous shooting mark on the LCD panel. In the Creative Zone mode, all four drive options are settable. In the Basic Zone modes, single, high- and low- are set automatically depending on the shooting mode and self-timer is settable.

A maximum continuous shooting speed of 5 fps can be attained in both the One-Shot AF and AI SERVO AF modes thanks to the CMOS sensor with 4-channel signal reading and the DiG!C II Image Processor.

With the EOS 20D and a DC motor (non-USM) lens, the maximum continuous shooting speed was 3.5 fps in the AI SERVO AF mode. An improved lens-drive algorithm has made it possible for the EOS 30D to achieve 5 fps under the same conditions.

An improved image processing sequence, in particular enhanced memory management during image processing, has increased the burst capacity of the EOS 30D to 30 frames during high-speed continuous shooting in the JPEG Large/Fine mode, even though the buffer memory capacity is the same as that of the EOS 20D. Also, in the RAW and RAW+JPEG modes, a different image processing method is used so that the maximum burst during high-speed continuous shooting is increased to approximately 11 shots in RAW and approximately 9 shots in RAW+JPEG Large/Fine. (The actual maximum burst depends upon shooting and processing conditions and the type of CF card in use.) In the EOS 20D, the maximum burst in both RAW and RAW+JPEG is 6 shots. The maximum burst is displayed at the bottom right in the viewfinder. "9" is displayed if the maximum is 9 shots or higher; a number from "8" to "0" is displayed if the maximum is fewer than 9. The maximum burst is displayed even when the drive mode is Single or Self-timer or if no CF card is installed. In the B/W mode, the maximum burst will be higher than when shooting is in color.

Image-recording Quality

Maximum Burst

Oil High-Speed QlH Low-speed continuous shooting continuous shooting



















liWi'l A1






• Continuous shooting is possible until the CF card becomes full.

• Continuous shooting is possible until the CF card becomes full.

Viewfinder The viewfinder's basic optical construction, superimposed AF point display, Precision Matte focusing screen and specifications (95% coverage vertically and horizontally, 0.9x magnification with 50mm lens at infinity with -1 diopter, 20mm eyepoint, -3.0 to +1.0 diopter adjustment range) are the same as the EOS 20D's. The FE lock icon, also on the EOS 5D, is an addition to the information display, allowing FE and AE lock to be indicated separately. Because the EOS 30D has a new

spot metering feature, the metering zone mark in the center of the viewfinder has been changed to a spot metering circle which is smaller than the partial metering circle in the EOS 20D.

The quick-return mirror affords a viewfinder blackout time of only 110 ms at shutter speeds of 1/60 second and faster. Mirror lockup of up to 30 seconds is set with C.Fn-12-1. There is no mirror cut-off with lenses up to EF 600mm f/4L USM, a professional specification. A depth-of-field preview button is provided, enabled in the Creative Zone modes. With Canon Speedlites 580EX, 550EX, 430EX, 420EX, MR-14EX or MT-24EX, pressing the depth-of-field preview button fires a modeling flash.

Autofocus The AF sensor/modes/speed, selection ease, AF-assist beam and other AF-related specifications are the same as the EOS 20D's. With regard to AF precision, further fine-tuning has been incorporated compared with the EOS 20D

Metering sensor

E-TTLII Autoflash The specifications ofthe built-in flash are the same as those of the unit in the EOS 20D: E-TTL II autoflash, Guide number 13/43 at ISO 100 in meters/feet, coverage compatible with an EF-S 17mm wide angle lens (equivalent to an EF 28mm lens in full-frame 35mm format), 91.93mm between the optical axis and the flash head center and maximum flash sync speed 1/250 sec. To match the EOS 30D's improved shutter durability, a highly durable Xenon tube is incorporated to increase the service life ofthe built-in flash.

Flash exposure compensation can be set in 1/3- or 1/2-stop increments up to +/-2 stops. FEC for both the built-in flash and a Speedlite can be set with the camera. Autoflash is not possible with EOS-dedicated Speedlites other than the EX-series. The manual flash mode should be used instead, if it is available. ONE-SHOT AFis recommended for flash photography because the AF-assist beam cannot match predictive AI SERVO AF. When in the Landscape or Sports mode, use of an EOS-dedicated external Speedlite is not recommended because the flash would fire at all times whether or not it was desired. The C.Fn-09 setting applies only to AEB and WB-BKT, so, regardless of C.Fn-09 choice, the FEB sequence will follow the Speedlite's setting. Finally, when using the built-in flash, lens hoods should be detached to prevent flash coverage cut-off.

Metering sensor iwrnmr

Power Source, Shooting To compensate for the extra power consumed by the new 2.5-inch monitor, Capacity and Startup Time microcomputer power management has been incorporated. As a result, the number of possible shots exceeds that ofthe EOS 20D.

Battery Life


Shooting Conditions

No Flash

50% Flash Use

At 20°C/68°F

Approx. 1100 shots

Approx. 750 shots


Approx. 900 shots

Approx. 600 shots

• The figures above are based on a fully-charged BP-511A and CIPA (Camera & Imaging Products Association) testing criteria.

• The figures above are based on a fully-charged BP-511A and CIPA (Camera & Imaging Products Association) testing criteria.

With the addition of an "Imminent power exhaustion" step, the battery charge level display now has 4 increments, like the EOS-1 Series cameras and the EOS 5D, so remaining charge can be indicated more precisely.

The EOS 30D can be powered by BP-511A/514/511/512 battery packs. The Battery Grip BG-E2 can accommodate two of these battery packs or sixAA-size batteries, doubling shooting capacity. AC power is possible with the optional AC Adapter Kit ACK-E2.

Thanks to DiG!C II, an improved system processing sequence during startup and shorter startup processes, the EOS 30D boasts the fastest startup time of any EOS digital camera, 0.15 second (approximately). The EOS 20D is itself speedy, at 0.20 second.

Battery Level Indicator

Fully charged

Low charge

Almost completely discharged

Completely discharged


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