TAILIEUCHUNG - Complete Guide to the Nikon D200- P4

Complete Guide to the Nikon D200- P4: As with all my books, a full draft was reviewed by volunteers to weed out unclear language and misstatements. This book is better because of them. | Digital converters ADC . These converters have a relatively simple job which is to evaluate the number of electrons they see at each photosite and convert that into 12-bit digital values that are then passed on to the rest of the camera s circuitry. Another wrinkle enters into play here as well Nikon is adjusting for white balance while the signal is still in the analog domain . before the ADC does the conversion to digital . Nikon calls this color preconditioning. More on that in the section on White Balance see page 272 . Tip For a fuller discussion of how sensors work see http . Power The D200 uses two batteries only one of which is user-accessible. The main battery is an 1500mAh 37 Lithium-Ion EN-EL3e pack which is similar to but not the same as the EN-EL3 used in the D50 D70 D70s and D100. Each EN-EL3e battery weighs about ounces 75g which makes carrying multiple batteries painless. The differences between the EN-EL3e and the previous EN-EL3 and EN-EL3a are 1. The EN-EL3e stores more mAh than the EN-EL3 1500mAh versus 1300mAh the EN-EL3a was also 1500mAh . 2. The EN-EL3e has a third connection terminal that the camera uses to monitor the battery condition. It s this third connection that makes it impossible to use older EN-EL3 and EN-EL3a batteries in the D200 the camera will 37What s mAh mean That stands for milliamp hour. In other words the battery could provide a constant 1500 milliamps of current for an hour. Since the camera at idle draws less than 3mA which would mean that the camera could be left on for over 20 days before the battery would go dead. Of course once you start taking pictures and using the many powered features of the camera that number drops considerably. Thom Hogan s Complete Cuide to the Nikon D200 Page 91 not operate at all if it can t get information about the status of the battery. However note that an EN-EL3e battery works in a D50 D70 D70s or D100. To keep the confusion to a minimum .

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