Bottom line, the Canon 1D Mark IV is one of the fastest digital SLRs on the market today. We only wish the buffer size was bigger to better accommodate the fast frame rate. At 10 frames-per-second, it only takes about 2.5 seconds to fill the buffer when shooting full size RAWs.
The camera features an ISO setting range from 50 to 204,800 which can be selected automatically or adjusted manually. Like all Canon DSLR full frame cameras, the 1D X does not feature a built in flash. The camera can shoot 14 frames per second continuous shooting JPEG (with mirror locked up, no autofocus) and 12 frames per second continuous shooting in RAW, JPEG, RAW+JPEG with full auto focus and lens aberration correction. According to Canon, the maximum shooting rate is reduced to 10 fps at ISO settings of 32,000 and higher. The camera's viewfinder has an estimated magnification of .76x and 100% field of view.
When I tested with an f/1.8 lens at f/2.2, it slowed to about 11.5 FPS (it has to wait for the blades to flap around), and at f/5.6, where the blades really have to move, it only clocked 8.5 FPS, in manual focus at ISO 100 at 1/1,000 manual shutter speed.
I clocked this with a Junghans 1/10-second mechanical stopwatch as a target to mark seconds clearly, since electronic LCDs don't move fast enough. For people trying this at home, it turns out that the EXIF clock times are written accurately, so you can look at the capture times and not need a stopwatch.
There are a lot of buttons, which helps us set things fast. There are so many buttons that the manual devotes four printed pages to cover the external buttons, two to show what's in the finder, two explaining the top LCD and one page just for the rear B&W text LCD.
See page 139 for a trick 4-step no-menu method to set manual white balances. There are five preset memories for manually-set white-card white balances, a great help for shooting in crummy light, or different studios.
See page 139 for a trick 4-step no-menu method to set manual white-card balances. There are five preset memories for manually-set white-card white balances. 1 unit shift = 5 mireds (half a decamired; a4 shift. = A2 filter)
The Canon 5D Mark IV sports a high-end, complex autofocus system that can be fine-tuned for practically any situation. Since the goal of this article is to provide recommended settings and not particularly focus on what each camera feature does, I am not going to spend a lot of time explaining why I chose a particular setting. The below autofocus settings are provided as a guidance to what worked well for me when photographing birds, so your mileage might vary. My recommendation would be to read Chapter 4 in the camera manual to understand what each autofocus setting does in detail. 2b1af7f3a8