Exposure Compensation

Basic Photography and Playback: Auto Mode

Exposure compensation is used to alter the exposure from the value suggested by the camera to make pictures brighter or darker.

1 Press o (exposure compensation).

• The exposure compensation guide and histogram are displayed.

	2 Use the rotary multi selector to adjust the
	exposure and press the kbutton.
	• When the subject is too dark: adjust the exposure
	compensation to “+” side.
	• When the subject is too bright: adjust the exposure
	compensation to “–” side.	Exposure compensation
	• Exposure compensation can be set to values between	Exposure compensation
	• Exposure compensation can be set to values between
	–2.0 and +2.0 EV.	Histogram

•If a setting is not applied by pressing the k button within a few seconds, the selection will be cancelled.

•When set to any value other than 0.0, the value is displayed with the Hicon in the monitor.

3 Press the shutter-release button to take the picture.

•To turn off exposure compensation, repeat from step 1 and set the value to 0.0, then press k.

CExposure Compensation Value

The exposure compensation value applied in A(auto) mode is stored in the camera’s memory even after the camera is turned off, and reapplied the next time A (auto) mode is selected.

DUsing Exposure Compensation

•The camera tends to lower exposure when the frame is dominated by brightly lit objects (for example, sunlit expanses of water, sand, or snow) or when the background is much brighter than the main subject.

•Negative compensation may be called for when large areas of the frame contain very dark objects (for example, a swath of dark green leaves) or when the background is much darker than the main subject.

DUsing the Histogram

A histogram is a graph showing the distribution of tones in the image.

•The horizontal axis corresponds to pixel brightness, with dark tones to the left and bright tones to the right. The vertical axis shows the number of pixels.

•Increasing exposure compensation shifts tone distribution to the right, and decreasing it shifts tone distribution to the left.

36 • Use as a guide when using exposure compensation and shooting without the flash.

S640 specifications

Nortel Networks S640, a notable member of the Nortel product line, offers a comprehensive solution for enterprises requiring high-performance network equipment. Known for its reliability and extensive features, the S640 has gained traction in various industries, addressing the demand for robust telecommunications and data networking.

One of the primary characteristics of the S640 is its advanced switching capabilities. It operates at Layer 2 and Layer 3, making it suitable for diverse network topologies. The switch is capable of managing a high volume of data traffic efficiently due to its scalability, accommodating growing network needs without compromising performance.

The S640 is equipped with Power over Ethernet (PoE) technology, which simplifies the deployment of connected devices like IP cameras and VoIP phones. This feature not only reduces the need for separate power supplies but also enhances installation flexibility.

Another vital feature of the S640 is its support for Quality of Service (QoS). This functionality ensures that critical applications receive priority over less essential traffic, leading to improved performance for services such as voice and video over the network. QoS management is especially crucial in business environments where it is necessary to maintain operational efficiency and user satisfaction.

Security is paramount in modern networks, and the S640 addresses this with a range of integrated security features. It supports advanced authentication mechanisms such as IEEE 802.1X, ensuring that only authorized devices can access the network. Additionally, features like virtual LAN (VLAN) support help isolate different segments of network traffic, bolstering security and management capabilities.

The S640 also emphasizes energy efficiency, making it an environmentally friendly option for enterprises concerned about their carbon footprint. Nortel has designed this equipment to meet various energy standards, reducing consumption while delivering optimal performance.

In summary, the Nortel Networks S640 stands out in the crowded networking market through its powerful switching capabilities, support for PoE and QoS, robust security features, and commitment to energy efficiency. This combination of characteristics makes it an ideal choice for enterprises looking to upgrade their networking infrastructure to meet contemporary demands. With its reliable performance and versatile functionalities, the S640 continues to be a significant asset in the evolution of network technology.

Nortel Networks S640 user manual Exposure Compensation, Press o exposure compensation

Models: S640