Nikon F80D Chinese manual is urgently needed.

In order to give a quantitative result, the partial power consumption of F80D camera is measured by using the 10A file of a 4-and-a-half DT930FG digital multimeter. Warning: If you have no practical experience in electronic circuits, please don't repeat this test. ) During the test, two lithium batteries that have consumed more than half of the power are used.

behaviour

numerical value

explain

Close, or

Automatic shutdown:

0 ma

Therefore, it is not closed for a long time in the open state and does not consume electricity.

Open it, or

Tap the shutter:

98 ma

Auto focus off

Door b is activated:

202 ma

According to the instructions, this state can be used for 6 hours, so the lithium battery CR 123A is 1.2 ampere-hours.

Depth of field prediction

Button press:

98 ma

The power consumption is the same as that in the startup state, but there is current during the transition.

High speed focusing:

390 ma

AF24-85/2.8-4 lens, 85mm segment, macro to lengthen the focal length, lens cover makes the camera unable to find the focus, look back and forth.

Film rewinding:

370 mA (common coil)

3 10 ma (silent film)

Both are averages.

Other actions:

Difficult to measure

Such as filming, winding, shutter, etc. , are instantaneous action.

Other Nikon cameras have this for reference.

Second, the machine vibration test

Test purpose: When the shutter is started, the vibration of the mirror will affect the imaging.

Tested equipment: Nikon F80D+24-85/F2.8-4+MB- 16, weighing 570g, 602g and 247g respectively.

Tripod: male figure 055CSH+352RC. The camera is installed through its quick loading plate.

Setting: the camera is pointed horizontally, and the small mirror on the reflective surface is attached to the back with thin double-sided tape (removed from the fax machine).

The laser pointer is placed on another tripod. Because it has been used continuously for a long time, it is connected with an external adjustable power supply and adjusted to low light, so that it is comfortable to observe, does not hurt people and does not age, and the light is directed at the small mirror of the camera. After reflection, it travels 5 meters and is mapped on the coordinate paper on the wall.

With this setting, the tiny vibration of the camera can be observed very sensitively.

The measurement results are as follows: Nikon F80D+MB-16+AF24-85/F2.8-4+055CSH+352RC with 5000 mm reflected light path.

measure

serial number

Vibration reading

Focal plane vibration, micron

test condition

comment

millimetre

50 mm

100 mm

tripod

Tripod central axis

cell box

Starting enrichment system

1

0.4

2.0

4.0

Complete extension

retract

no

self-portrait; selfie

2

0.6

3.0

6.0

retract

retract

be

self-portrait; selfie

three

0.6

3.0

6.0

Complete extension

retract

be

self-portrait; selfie

four

0.8

4.0

8.0

retract

Complete extension

be

self-portrait; selfie

five

1.0

5.0

10.0

Complete extension

Complete extension

be

self-portrait; selfie

six

1.5

7.5

15.0

Complete extension

retract

be

Use the cable to release.

highest

seven

1.0

5.0

10.0

Complete extension

retract

be

Cable release swing

eight

5.0

25.0

50.0

Complete extension

retract

be

Press the shutter by hand

nine

0. 1

0.5

1.0

Complete extension

retract

be

self-portrait; selfie

Add a bracket, as shown.

Remarks: Lines per millimeter = 1000/ micron focal plane vibration value.

Some inferences and ideas:

1. Set up a tripod and shoot in a proper way. At short focal length, the vibration is very small and can be ignored.

2. Avoid exerting force on the camera during the shutter opening process, including pressing the shutter by hand and exerting force on the fuselage through cable release (even wind blowing). );

3. Because the vibration consequences are proportional to the focal length (assuming that the mechanical mass is constant, such as most zoom lenses), the equivalent vibration increases when the focal length is long;

4. The increase of battery box is not conducive to machine vibration;

5. Try not to extend the central axis of the tripod;

6. Adding support at the lens will effectively eliminate the machine shock (see figure, indigenous method);

The movable ring on the tripod leg is said to be used for screwing screws. Look at Manfutu's advertisement, and its "long lens camera bracket" (359) is used in this way. Later, we found a rod antenna with a rubber head screwed on it, which can achieve this goal more effectively;

7. If the tripod is placed on the wooden floor, people will have a great influence on walking during exposure, and the reading can reach more than 5mm;

8. In order to measure the distortion of the camera in the axial direction of the lens, connect the lens to the side of the camera and measure it again. Therefore, the distortion is almost unobservable and can be ignored.

8. Due to the limitation of measurement conditions, the measurement result is a comprehensive maximum, and the actual mechanical vibration should be less than the measurement value.

Third, spot metering

Measurement method:

Stick an A4 white stool on the camera with a tripod, 50cm away from the focal plane of the camera, and fix it with adhesive. Adjust the focal length of AF24-85 lens to 50mm, and draw it on white paper with a pencil according to the area and grid of the viewfinder. Find a red LED with high brightness and cut off the round head to make it a point light source, which is insensitive to angle; Adjustable regulated power supply is connected in series with 1KW resistor, so that the current of LED is 7.5mA；; A short pencil tip with a total height of 4cm is connected behind the LED and fixed on the battery CR 123A, so that the whole LED can only move in parallel; The camera is set to manual aperture F4, and the indoor lighting is dark at night. Move the luminous combination and find the most sensitive point as 1/750. In order to cancel the automatic shutdown, the cable release is installed, so that the shutter is always in a half-pressed state and will not be turned off for a long time; Set the shutter to 1/350, and move the lighting combination to make the indicated exposure time change between 1/350 and 1/500; Try to move and keep the above conditions satisfied, so that you can draw an "isochronous curve" on white paper with a pencil; Also set the exposure time to1180, 1/90, 1/45, and draw the other three curves; Finally, the measurement results are smoothed and sorted.

Measurement result (size on A4 paper, mm, sensitive area has been corrected to compensate for the error caused by parallel method):

1. The metering area is basically rectangular.

2. The spot metering rectangle of the camera is slightly lower, about 2mm.

3. viewfinder size: 257x 174.

4. The area where the sensitivity is reduced by one level: 17x 16, and its area is 0.6 1% of the viewfinder area.

5. The area for reducing the sensitivity in the second step: 2 1x20, which is 0.94% of the viewfinder area.

6. The area with the sensitivity reduced by three levels: 25x22, with an area of 65438+ 0.23% of the viewfinder area.

7. The area where the sensitivity is reduced by four steps: 30x25, with an area of 65438+ 0.68% of the viewfinder area.

8. The black frame in the central focus area has a shielding effect on photometry, and the shielding effect on point light sources reaches more than 2 levels.

From this point of view, the spot measurement area of 1% in the specification is effective, which is equivalent to cutting off the insensitive area about 2.5 files smaller than the center, but the so-called circle should be square.

Fourth, trap focusing.

Example:

1. I want to take a picture of MM coming out of the front door. How to take it? Set up the tripod and telephoto, adjust the focal length, focus and position, then press and hold the cable to release and watch and wait at any time. However, MM just doesn't know when it will appear.

2. If you want to take a shot of an object being taken away (stolen) or moved by others;

There are many examples of this, such as filming a bug crawling on a piece of white paper (although the white paper is in focus, the camera doesn't think so-there is no contrast). When did the electricity come (although the camera won't shoot it when focusing in the dark)? After the phone call, the light came on. Time is recorded on the film) Butterflies come out of pupae, mice come out of holes and crows come back to their nests. Who is cleaning the windows?

The method of catching traps on F80D;

1, set the option 1 1 to 4: only use the AF-L button for autofocus;

2. Set the focus mode to S-AF;

3. Set the shooting mode to single shot or continuous shooting;

4. Use the fuselage duplex position to reach the predetermined position, and press AF-L for autofocus;

5. Open your body double, and press the shutter at this time. Because there is no focus, the camera does not focus automatically, so it does not shoot;

6. Use the cable to release, press and lock the shutter, and the camera will be in trap mode! !

7. Once an object enters the pre-measured body double position, the camera will automatically shoot without human intervention.

It's best to set it to continuous shooting mode, and you can take one picture for every MM (or you will really be continuous shooting if MM doesn't leave after it appears). In addition, the focus in step 4 can also be manually completed or corrected: after the focus mode is set to M range, just pull back to S range, and the focus can be set to any one of five. But it is best to set it as the center point, otherwise the reaction will be slow.

Of course, electricity will be consumed during the trap. The measured opening of door B is similar to that of door B, both of which are 100mA. Two lithium batteries can be used for 6 hours at 20 degrees. If you want to save electricity, use MB 16 and No.5 batteries.

After testing, in order to be able to shoot traps, it is necessary to ensure that the subject enters the line of sight and focuses for a certain period of time before shooting. Otherwise, if an object passes by quickly, even if it is already in focus, it can't be photographed. This time is estimated to be 0.05-0. 1 sec after many measurements. Estimation method: focus on a distant object, shoot continuously, hold down the shutter after blocking another nearby object, shoot automatically whenever the object moves away, and stop when it moves back. Change the removal time until there is no reaction.

In actual combat, if you accidentally find an old lady about to enter the trap originally designed for MM, you can block the camera with your hands or other objects.

The landlord has worked hard to help the newcomers.