как прошить nikon d40x

Besides the main flash modes listed above, the D40x's onboard speedlight can also be used in manual mode, in which you can set its power output to fixed levels of full, 1/2, 1/4, 1/8, 1/16, and 1/32 power. The D40x's internal flash is fairly powerful, with a guide number of 17 meters or 55 feet at ISO 200 in auto mode, extending slightly to 18 meters (59 feet) in manual mode. The greater range in manual mode is because it doesn't have to expend energy on the metering pre-flash. (Novices should note that 55 feet is the guide number, not the range.

Another note relative to the x-sync speed on the D40x: Its built-in flash is not FP-capable. Basically, this means that the on-board flash can't sync at shutter speeds greater than 1/200 second. There also doesn't appear to be any support for external flash units that are FP-capable.

As noted elsewhere in this review, the Nikon D40x has a 1/200 second maximum x-sync speed.

Flash exposure can be set over a range of -3 to +1 EV by holding the Flash and Exposure Compensation buttons down simultaneously, while rotating the Command Dial. (Flash exposure can also be adjusted via the Shooting Display and Multi-Controller arrow keys, which some users may find more straightforward.)

The flash modes available vary depending on the setting of the mode dial, with some of the more automated/programmed modes restricting your choices. The full list of flash modes includes Auto, Auto+Red-Eye Reduction, Auto+Slow Sync+Red-Eye Reduction, Slow Sync, Slow Sync+Red-Eye Reduction, and Rear Curtain+Slow Sync. Red-Eye Reduction mode fires the (very bright) AF-assist light before the main flash exposure, to reduce the Red-Eye Effect in shots of people. Red-Eye Reduction with Slow Sync works in a similar fashion, but combines the flash with a slower shutter speed for night portraits. (This reduces the harsh effect of nighttime flash shots, allowing more of the ambient illumination into the picture.) Slow Sync mode works with shutter speeds as slow as 30 seconds to preserve color in night shots. Finally, Rear-Curtain Sync fires the flash at the end of the exposure, producing light trails that appear to follow (rather than precede) moving subjects. A Manual flash exposure mode is available via Custom Settings Menu option 14.

Flash capability is also an area where the Nikon D40 and D40x shed some substantial capability relative to the D80, though, in that its built-in flash can't serve as a Commander in Nikon's Wireless Lighting System. You can still use the D40x with a Nikon SB-800 flash to control multiple remote flash units, but the built-in flash doesn't have that ability on its own.

Flash photography has been a particular strength of Nikon SLRs for some time now, and the D40x follows suit, with its implementation of Nikon's 3D Color Matrix II metering for flash exposures. This advanced exposure metering system takes advantage of subject-distance information relayed by the lens to compute more accurate flash exposures than more conventional systems based on reflected light alone.

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Nikon D40X Camera Flash - Full Review