Canon EOS 1D Mark III User Guide - Page 35

A top continuous shooting speed of 10 fps is attained in both the One-Shot AF and AI Servo AF modes even though the EOS-1D Mark III has about 1.23 times more pixels than the EOS-1D Mark II N. This was made possible by the new drive mechanism (a new bound/ bounce prevention mechanism for the reflex mirror's downward motion, a dedicated motor for mirror cocking, and a dedicated motor for shutter cocking), a CMOS sensor enabling 8-channel high-speed signal reading, a newly-developed shutter unit, and Dual DIGIC III Image Processors for high-speed image processing. 10 fps DDR SDRAMs with double the Maximum burst capacity of the EOS-1D Mark II N's memory chips are employed for the buffer memory, facilitating high-speed data transfer. Together with Dual DIGIC III Image JPEG Large RAW RAW + JPEG Large EOS-1D Mark III (10.1M/10fps) 110 30 22 1D MarkIIN (8.2M/8.5fps) 48 22 19 Processors for parallel processing of images, a maximum burst of *The number of maximum burst apply to a 1GB (for EOS-1D Mark III)/512MB (for 1D MarkIIN) Memory Card based on Canon's testing standard. approximately 110 shots in JPEG Large (quality 8), approximately 30 shots in RAW, and approximately 22 shots in RAW+JPEG is attained at 10 fps. The maximum burst varies depending on the subject, memory card performance, recording quality, ISO speed, drive mode and Picture Style setting. The shutter-release mechanism is the same as the EOS-1D Mark II N's. The shutter-release stroke and torque are the same as well. However, to make Shutter-release stroke and pressure State Stroke Normal position SW-1 ON 0.6mm SW-1 ON to SW-2 ON 0.3mm Beyond SW-2 ON 0.2mm Pressure 85g /3.0 oz. 350g /12.3 oz. - vertical shooting feel the same as horizontal shooting, the vertical grip's shutter- release stroke and torque have been altered. They are now almost the same as with horizontal shooting. Also, to make the camera operation feel the same as that of the 1D Mark II N, the shutter-release time lag from SW-1 ON is 55 ms (up to 3 stops from the maximum aperture). The viewfinder blackout time is 80 ms (87 ms with the 1D Mark II N). The shutter-release time lag at maximum aperture can be shortened to approx. 40 ms with C. Fn IV-13 [Shortened release time lag]. Metering and Exposure Control The EOS-1D Mark III incorporates a newly-developed, 63-zone metering sensor linked to the 19 AF points. The metering sensor is located at the rear of the pentaprism. The 19 AF points in the Area AF are a highly favorable match for the metering sensor's zones. The metering range is EV 0 to EV 20 (at 23°C/73°F, EF 50mm f/1.4 USM lens, ISO 100). VIII. ROCK SOLID RELIABILITY 35