Canon Eos 5d Vs 5d Mark Ii
The technology of ISO settings on digital cameras replica of the nominal speed films of yesteryear. In very general terms, the ISO is the sensitivity of light sensor in the same way that the speed of the film were more or less sensitive to light. But there are differences between film and digital sensors, in particular, the adjustment increases the sensitivity in a digital camera, the sensor output is also amplified. This is known as grain for the use of film at high speed. Thus, although has the potential to increase the ISO at any time firing, compensation for increasing the amplification or accumulation of an excessive burden on the pixels is the increased digital noise. And the result of digital noise is a total loss of resolution and picture quality.
Partly because of the 5D Mark II has relatively pixels important because the sensor and Canon has done a good job of applying advanced noise reduction internal processing, the 5D Mark II stands out as the best performance even with high sensitivity settings, particularly in the exposure time of 30 seconds or less.
In this cleverly taken From point-and-Shoot, ISO sensitivity auto control sensor according to the mode of shooting where you are in any or Creative Auto, P, Tv or Av, the camera selects a range between ISO 100-3200. Change M, B, or add a Speedlite and dams Auto ISO 400. Auto ISO is displayed as an A on the screen LCD and when you select is at the bottom of the ladder by turning the main left after pressing the button to select the ISO.
ISO range and function of custom options
The 5D Mark II offers a wide range of ISO sensitivities, including automotive and configuration 100-6400 or 1/3-stop increments 1/2-stop increments, set using options C Fn I-01. The ISO range will be expanded to ISO 50 (Shown as L), 12800 (shown as H1), and an incredible 25,600 (displayed as H2) by the creation of C. Fn I-03. Note that the reduced ISO 50 the dynamic range of highlights by about one stop, which makes this less useful sensitivity to light high contrast. ISO 50 can be useful in a studio, a flexibility in the choice of the opening.
With the 5D Mark II, Canon offers an option to reduce or eliminate noise in long exposures.
With the noise reduction at long exposure option, using available C. Fn II-01, the noise is virtually eliminated all or processing device that is very capable, but it has almost as much time to complete the exhibition.
Setting ISO extended range ISO
To change the ISO setting on the 5D Mark II, follow these steps:
1. Press the Select button ISO above the LCD panel. The ISO setting being displayed on the LCD and viewfinder.
2. Turn the control button quickly for the right to establish greater sensitivity or left to create a lower sensitivity. ISO settings of the camera and turn the dial. If you have enabled ISO using the expansion C. Fn II-01 and ISO 50 is presented as L, ISO 12800 is indicated as H1 and H2 is represented by 25,600. The ISO option you select remains in effect until you change them again.
To enable the expansion of ISO, follow these steps:
1. Press the Menu button, then the slope of the multi-controller custom function (orange) menu.
2. Press the Set button. Screen Service is personalized, and custom function control number in the upper right of the screen is activated.
3. Turn the control knob for rapid C. Fn I number to 03 and then press the Set button. The expansion control ISO is active.
4. Turn Speed dial clockwise to select option 1: On and press the Set button. ISO expansion remains active until you change it.
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Tim Hetherington Canon EOS 5D Mark II