Drive Speed And Burst Performance; Viewfinder - Canon EOS 30D White Paper

Drive Speed and Burst
Performance

Viewfinder

The EOS 30D has a new drive mode called "Low-Speed continuous." Its maximum speed
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 manage-
ment 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 maxi-
mum 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
High-Speed
Quality
continuous shooting
30
55
50
100
105
220
11
9
• Continuous shooting is possible until the CF card becomes full.
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
V. PERFORMANCE, DESIGN AND CONSTRUCTION
Maximum Burst
Low-speed
continuous shooting
37
100
60
165
240
850*
11
9
Microscopic view of Precision
Matte focusing screen
22