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Nikon D7000

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Nikon D7000 Flash

Like the D90 and D300S, built into the Nikon D7000 is an unusually capable pop-up flash unit, which operates in one of five main modes: Front-Curtain Sync, Red-Eye Reduction, Red-Eye Reduction with Slow Sync, Slow Sync, and Rear-Curtain Sync. Front-Curtain Sync fires the flash at the beginning of the exposure, with every shot. 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 rather than at the beginning, producing light trails that appear to follow (rather than precede) moving subjects. In all flash modes, the flash fires with every exposure. Closing the flash disables it completely. Holding down the Flash Mode button while turning the Sub-command dial adjusts the overall brightness of the flash from -3 to +1 EV in one-third-step increments.

Besides the main flash modes listed above, the D7000's onboard speedlight can also be used in manual mode, as a repeating flash, or as a commander in Nikon's Creative Lighting System. (See below for more on that last item.) The D7000's internal flash is fairly powerful, with a guide number of 12 meters or 39 feet at ISO 100 in full manual mode. Nikon normally provides a second, slightly lower GN for auto flash mode (as the iTTL auto mode expends some power on metering preflashes), but did not do so for the D7000.

The built-in flash's normal X-Sync speed is 1/250s, but there's a 1/320s (Auto FP) option at reduced range. FP flash sync speeds as high as 1/8000s are available the with optional SB-900, SB-800, SB-600 or SB-R200 external flash units.

Repeating Flash Options

While we've never personally felt a need for a stroboscopic flash on a camera, we can imagine it being used for a variety of creative effects, as well as being highly useful for scientific applications. The D7000's onboard speedlight can be used as a stroboscope, using the Repeating Flash option in Custom menu e3. Through this menu, you can set the power level from 1/128 to 1/4 power, the number of flashes from 2-35, and the frequency of flash pulses from 1 to 50 Hz (1-50 shots/second). As you might expect, the number of times you can have the flash fire varies inversely with the power of each discharge: At the maximum 1/4 power, you can only get two pops in rapid succession. The maximum of 35 flashes in sequence is only possible at the 1/128 power setting, moving up to 1/64 power decreases the maximum number to 25, and so on. Also note that you'll of course have to have a long enough shutter time to accommodate your flash series, so you'll likely have to visit custom setting menu e2, to change the maximum shutter time permitted with the flash.

Also included on the Nikon D7000 is an external flash hot shoe, just behind the pop-up flash compartment. (The image at left shows the included cover installed.) The hot shoe accommodates Nikon accessory flash units, as well as a wide range of third party flashes. The full range of flash sync modes remains available for compatible flash units, but third-party models may not support all modes. Unlike the D300S and professional models, a PC sync socket is not provided by the D7000.

3D Color Matrix II Flash Metering
The "3D" aspect of the Nikon flash metering system is that it uses subject distance information from the lens (only available with lenses that contain CPUs) to guide its exposure decisions. This is particularly key with flash exposures, because flash illumination falls off quite strongly as the subject gets further from the camera. We at IR are huge fans of Nikon's flash technology; it's really a case of technology working perfectly in the service of creativity. The camera just quietly does its job, so you can focus on composition, color, interacting with your subjects, etc. It doesn't remove the creative decisions of how you want to light your subject, it simply removes the technical legerdemain from the equation. It won't by any means turn a duffer into a pro photographer, but it'll certainly take an average shooter a long way in that direction.


The D7000 with Nikon's Creative Lighting System
Nikon has long been a leader in flash technology, but in late 2003, they significantly upped the ante, by announcing their Creative Lighting System. This system of flashes and supporting camera bodies lets the photographer control up to three separate groups of remote flash units, with an essentially unlimited number of individual strobes in each group. The exposure and operating mode of each group of flashes can be controlled independently, and exposure is metered through the lens (TTL) for all units.

Flash Commander Mode

On the D7000, the internal strobe can both act as a controller and also contribute to the exposure; it can control two groups of remote strobes, and can use any of the four available channels to communicate on. The screenshots at right give some idea of the options available. The built-in flash can operate in either TTL or Manual exposure mode. In TTL mode, you can vary its exposure over a range of -3 to +3 EV. In Manual mode, you can vary its power from full power (1/1) to 1/128 power. Each of the two groups of remote flash units can be operated in either TTL, AA (Auto Aperture), or Manual mode. Auto Aperture mode is the exposure mode that will be familiar to users of non-TTL metered autoexposure flash units, in which you set the camera at a given aperture setting, and then the flash measures the light reflecting back at it and adjusts its output to produce a given level of reflected light. The remote flash groups can be adjusted over a +/- 3EV auto exposure range or the same 1/1 to 1/128 power levels as the built-in flash unit.

This degree of control directly from the camera is really remarkable, and can save you some serious money if you're planning on taking advantage of Nikon's Creative Lighting System. If you don't need to control more than two groups of external strobes, you won't need to buy an SB-900, saving you at least $400 at retail. If you're interested in macro flash photography, you won't need the SU-800 controller that comes as part of Nikon's R1C1, going with the simpler R1 kit instead. That'll save you a good $200-250 at retail. Likewise, compared to Canon's wireless flash system, there's no need for a separate controller with the D7000, again saving you several hundred dollars.

A full treatment of this system is beyond the scope of this review of the D7000, but we have a bit more detail on it posted as a separate article: See our Nikon Creative Lighting System review for more info.


Flash Test Results

Coverage and Range
A fairly powerful flash with uneven coverage. Slightly above average exposure compensation required.

Flash coverage, at 18mm Flash coverage, at 105mm
Normal Flash, +1.0 EV Slow-Sync Mode, 0 EV

Coverage. Nikon claims the D7000's flash coverage is 16mm. As you can see from the wide-angle shot taken with the kit lens above, coverage at 18mm is not very even. While the kit lens itself has some considerable falloff in the corners of the frame wide-open (about 3/4 EV), much of what we see above is the fault of the flash. Coverage is more even at full telephoto.

Exposure. When it came to exposure, the D7000's flash underexposed our Indoor Portrait subject somewhat at its default setting, requiring a +1.0 EV exposure compensation adjustment (the average is about +0.7 EV for this shot). The camera's Slow-Sync flash mode produced a good exposure without flash exposure compensation (0 EV), though with a stronger orange cast from the background incandescent lighting.


Flash Range: Wide Angle
6 ft 7 ft 8 ft 9 ft 10 ft 11 ft
Click to see D7000FL06W.JPG
1/60 sec
f3.5
ISO 100
Click to see D7000FL07W.JPG
1/60 sec
f3.5
ISO 100
Click to see D7000FL08W.JPG
1/60 sec
f3.5
ISO 100
Click to see D7000FL09W.JPG
1/60 sec
f3.5
ISO 100
Click to see D7000FL10W.JPG
1/60 sec
f3.5
ISO 100
Click to see D7000FL11W.JPG
1/60 sec
f3.5
ISO 100
12 ft 13 ft 14 ft 15 ft 16 ft
Click to see D7000FL12W.JPG
1/60 sec
f3.5
ISO 100
Click to see D7000FL13W.JPG
1/60 sec
f3.5
ISO 100
Click to see D7000FL14W.JPG
1/60 sec
f3.5
ISO 100
Click to see D7000FL15W.JPG
1/60 sec
f3.5
ISO 100
Click to see D7000FL16W.JPG
1/60 sec
f3.5
ISO 100

Flash Range: Telephoto
6 ft 7 ft 8 ft 9 ft 10 ft 11 ft
Click to see D7000FL06T.JPG
1/60 sec
f5.6
ISO 100
Click to see D7000FL07T.JPG
1/60 sec
f5.6
ISO 100
Click to see D7000FL08T.JPG
1/60 sec
f5.6
ISO 100
Click to see D7000FL09T.JPG
1/60 sec
f5.6
ISO 100
Click to see D7000FL10T.JPG
1/60 sec
f5.6
ISO 100
Click to see D7000FL11T.JPG
1/60 sec
f5.6
ISO 100
12 ft 13 ft 14 ft 15 ft 16 ft
Click to see D7000FL12T.JPG
1/60 sec
f5.6
ISO 100
Click to see D7000FL13T.JPG
1/60 sec
f5.6
ISO 100
Click to see D7000FL14T.JPG
1/60 sec
f5.6
ISO 100
Click to see D7000FL15T.JPG
1/60 sec
f5.6
ISO 100
Click to see D7000FL16T.JPG
1/60 sec
f5.6
ISO 100

ISO 100 Range. At wide-angle, the Nikon D7000's flash exposures started our bright at 6 feet, and target brightness didn't start dropping off noticeably until about 13 feet, though images at 16 feet were still usable. At the telephoto end, flash intensity started out a bit dim at 6 feet, but didn't drop-off noticeably until about 10 feet, and became gradually dimmer from there on.


Manufacturer-Specified Flash Range
Wide Angle Telephoto
Click to see D7000FL_MFR111WM0100.JPG
11.1 feet
ISO 100
Click to see D7000FL_MFR070TM0100.JPG
7.0 feet
ISO 100

Manufacturer Specified Flash Range. The Nikon D7000's flash is rated with a Guide Number of 12 (m) at ISO 100, though it's unclear if that's just in manual full-power flash mode, or also applies to iTTL auto flash. The GN works out to be just over 11 feet at f/5.6 and about 7 feet at f.5.6, the maximum apertures of the kit lens at wide-angle and telephoto respectively. As shown in the test shots above, the Nikon D7000 produced a slightly dim exposures (underexposed by about 1/2 EV at wide-angle and 1/5 EV at telephoto), but that is likely due to the default Balanced Fill-flash Matrix Metering mode which takes into account the white surfaces. (The ISO 100 Flash Range series in the prior section used spot metering mode, as the target is quite small at longer distances. Switching to spot metering disables Nikon's Balanced Fill-flash metering, which would ignore the background. Those results were significantly brighter at the rated distances.)

Note: Our standard test method for flash range uses a fixed setting of ISO 100, to provide a fair basis of comparison between cameras. This wasn't performed for the D7000, as flash range is lens dependent, and the camera ships body-only in the US. We have however also begun shooting using the manufacturer-specified camera settings, at the range the company claims for the camera, to assess the validity of the specific claims. The specified range has been calculated for the lens and aperture used in the test shot above.