Nikon D90, AF S DX NIKKOR 18 105 lenses, there are a few questions, ask the master for help, thank y

1. If the problem is not clear, it can be manual or automatic.

2 No harm.

3 No harm.

I look at your problem, I guess you use a digital camera too much.

I thought that the automatic mode was that the lens moved by itself and zoomed by itself.

For SLRs, regardless of manual mode or automatic mode, zoom is manual.

And it is possible to focus manually, however, in autofocus mode, after focusing on your hand, press the shutter halfway, and the body will autofocus again (equal to the previous manual focus has no effect).

In manual focus mode, after manual focusing, press the shutter to focus directly.

1.It is not full-time manual focusing, and if manual priority focusing is supported in auto mode, M A will be marked on the lens.

2.When you turn on the machine, it is best not to rotate the focus ring, the 18-105 itself is a little out of focus, and then use the automatic mode to focus manually, it is difficult for the machine to find the focus point, and the accuracy will be affected for a long time.

3.It's okay to turn it off, but I'm wondering, what's the use of turning the focus ring when the machine is turned off?

- 105 sets of heads. It is priority focusing.

2. There is no damage.

3. There is no harm either.

I'm also a d90 user. Learn from each other.

Nikon's machine is not very recommended, it is not as good as Canon in terms of cost performance, 600D with 18-55, rich configuration, good imaging. Feel and weight are OK, for beginners who love photography, this is a very good model, easy to use, easy to control, 18-55 is also suitable for novices, **low.

The focus ring cannot be turned after the focus is locked.

There is no damage. There is no damage to this AFS lens.

First question: ......

The second question: it does not affect.

The third question: it does not affect.

nikon is what Nikon means.

D90 SLR Package refers to the Nikon D90 SLR Camera Package refers to the machine that includes the lens.

AF-S is Nikon's ultrasonic focus motor.

DX refers to a half-frame machine, D90 is a DX-type machine, and D700 is FX quality, also known as full-frame.

18-105 is the focal length of the lens, from 18 wide-angle to 105 medium telephoto f, which refers to the aperture of the lens from wide angle to medium telephoto.

g is the index terminal.

ED means that the lens contains ED lenses, whose function is to make the image quality and color more beautiful, and VR is Nikon's image stabilization technology.

The D in D90 stands for digital.

AF stands for Auto Focus

AF-S is an autofocus with an SWM ultrasonic motor.

DX is the meaning of Nikon Half Frame, and the focal length is approximately equal to the multiples of the full frame (fx), and f is its maximum aperture float range.

G stands for Nikon's digital head, and the difference between D and D is that the aperture ring is canceled and the aperture needs to be adjusted on the machine.

ED stands for ultra-low dispersion lens, which can greatly improve image quality.

VR is Nikon's anti-shake system, and its counterpart to Canon is IS.

The above parameters are mainly those of the lens. Mainly 18-105 focal lengths, 18 apertures are, 105 is the maximum aperture.

The Nikon D80 display F-lens is also mounted.

Hello dear, when the screen on the Nikon D80 camera is displayed"f--", this usually means that the camera does not recognize the maximum aperture of the lens. This could be due to one of the following reasons: The lens you installed is not being installed correctly.

Please make sure that you have the mirror head in place and locked it tightly. The lens you have installed is not a Nikon lens or is not compatible with your camera. Make sure you have a Nikon lens that is compatible with your camera.

There may be a problem with the electronic connection of the lens. Remove the lens from the camera and clean the attachment points to make sure they are free of dust or dirt, then reattach the lens and try to shoot again. If you still see"f--"Try using another lens, and if the problem persists, contact a Nikon service center or a professional repairer for help.

Summary. The reason why the Nikon D80 shows that the F- lens is also fitted is the F--"The error indicates that there is no lens installed at this time. However, if the lens is already attached, it may mean that the lens is not properly connected and the camera is not connected to the lens.

Try using a dry cloth to clean the CPU contacts on the lens and then attach the lens again.

The Nikon D80 display F-lens is also mounted.

The reason why the Nikon D80 shows that the F- lens is also fitted is the F--"The error indicates that there is no lens installed at this time. However, if the lens has been installed, it may mean that the lens is not properly connected and the camera is not connected to the lens. Try to make the front bench durable dry cloth clean the CPU contacts on the lens, and then attach the lens crutter again.

1.That's the aperture value of 2The aperture is a device used by Zhenlu to control the amount of light that passes through the lens and enters the photosensitive surface of the fuselage, which is usually in the lens.

To express the aperture size, we use the f-number. 3.Aperture f-number = focal length of the lens and diameter of the lens aperture.