What does nd ir mean in the camera?

What does nd ir mean in the camera? IR lens is an infrared lens, which is mainly used for night vision, and is most used in surveillance cameras!

ND is a kind of filter, which is installed on the lens to reduce ambient light!

What does the wide angle in the camera lens mean! Wide angle refers to the imaging circle equivalent to the size of 35MM film in 135 system.

Lens with focal length below 35MM

Although your 28- 105 has a wide angle of 28, it is only for 35MM film.

The imaging area of digital SLR is smaller than that of 35MM film.

This brings a problem of lens focal length coefficient.

The focal length coefficient of D70S is1.5x.

So the equivalent focal length of your wide-angle end 28- 105 is

28* 1.5=42

Basically close to a header.

So there is no wide-angle effect.

What does AS mean in Nikon lens? Did you say aspheric surface?

It means that the lens uses aspherical lenses, but how many lenses are used can't be seen from the text information of the fuselage.

Using aspherical mirrors is nothing new. Even the lowest-end lens, such as 18-55, is generally believed that the more lenses are used, the more significant the correction effect will be.

Other manufacturers' lenses usually use ASP to indicate that the lens uses an aspherical mirror.

good luck

Are you talking about spirituality? It means that the lens uses aspherical lenses, but how many lenses are used can't be seen from the text information of the fuselage. Using aspherical mirrors is nothing new. Even the lowest-end lens, such as 18-55, is generally believed that the more lenses are used, the more significant the correction effect will be. Other manufacturers' lenses usually use ASP to indicate that the lens uses an aspherical mirror. good luck

Adopt it

What does Nikon 1 series lens PD-ZOOM mean? You mean Nikon 1 NicholVR10-100/4.5-5.6 PD-Zoom lens.

PD ZOOM = power-driven zoom,

That means "electric zoom" and "electric drive zoom", which is different from most zoom lenses. This kind of lens is realized by the user pressing the "push" and "pull" buttons (in fact, many card machines do this), and the corresponding control signal is generated by the circuit to control the zoom motor to drive the zoom lens group to move forward at a certain speed. This is very convenient to operate and the zoom process is smooth (very conducive to shooting videos, not easy to shake hands). But the zoom speed is usually not as fast and accurate as the manual zoom lens.

The lens with electric zoom is either made smaller or has a large zoom ratio. In addition, Panasonic and Olympus M4/3 systems also use electric zoom on several lenses.

What does MR in Nikon lens mean? Mago magnetoresistive head.

Zoom to realize ultrasonic motor.

Some Nikon styles are poorly made. I remember it was a common problem of D70 and D80 pullovers. I feel much worse after the repair.

So some people don't like Nikon very much.

What does VR in Nikon lens mean? VR in Nikon lens means that this lens has optical vibration reduction function;

The specific implementation method is as follows:

There is a lens in the lens, which can be moved as needed. Through the detection circuit, the lens in the lens can be displaced in the opposite direction of vibration, so as to compensate and reduce the image blur caused by the decrease of shutter speed when the illumination is insufficient, thus reducing the requirements of shooting and imaging and improving the film yield.

What does "IF-ED" in Nikon lens mean? The meaning of Nikon lens logo

AI: Automatic Indexing and Automatic Large Diameter Transfer Technology

Published in 1977, the first major change of Nikon F-mount AI refers to the process and method of normal exposure measurement when the large aperture value of the lens is transmitted to the metering system. When the AI lens is installed on the fuselage compatible with AI technology, the large aperture value of the lens is transmitted to the fuselage photometry system by the automatic meshing drive of the mechanical linkage rod to realize full aperture photometry. The first batch of Nikon F2A, F2S, Nikkmart EL2, FT3 and FM all benefited from this technology: the representative lens of Nikkmart AI 50/650.

AI-S: Automatic Indexing Shutter Automatic Shutter Exponential Transfer Technology 198 1 Nikon modified the entire AI lens mount to make it fully compatible with the FA high-speed program exposure mode that was put into use immediately. The new AI-S bayonet nikkor lens is modified according to the orange small aperture number on the lens aperture ring and aperture direct reading ring and the grinding concave on the tool holder. Slots are very easy to identify. When AI-S lens is used in Nikon FA fuselage, it can provide information to the fuselage according to its focal length. When the normal program or high-speed program shutter speed priority automatic exposure mode is selected, they can provide exposure control in a very wide light range (customized for the automatic exposure on the AI-S lens FA, so the automatic exposure linkage of the fuselage can control the aperture of the AI-S lens very smoothly to achieve faster and more accurate exposure control). Representative lens: Nicole AIS 50/ 1.4.

AF-S: silent wave motor.

The lens is equipped with a silent wave motor, which is equivalent to Canon's ultrasonic motor. Traveling waves provide energy for optical focusing. High-precision silent fast focusing, supporting full-time manual focusing. AF-S lens autofocus camera includes F5. F4； f 100； F90XF90F80F70F65d 1； d 1X； d 1H； D 100 The rest of the fuselage is connected with luminous autofocus. Representative lens: 28-70 mm f/2.8 ED-IF AF-S Zoom-Nikkord lens: Distance and focal length data transmission technology returns focal length information to the representative lens. For 3D (scene brightness, scene contrast and scene distance) matrix photometry reference and TTL equalization flash control 1992 representative lens: 28- 105mm f/ 3.5-4.5d AF zoom-Nicole CRC: Close-up correction Close-up correction adopts floating lens design, which ensures that the optical quality decreases during close-up. For example, AIS 24/2.8, AF 85/ 1.4D IF and so on all adopt CRC technology DC: defocus-image control defocus image control. Nikon original lens provides unique defocus image control function. There is a defocusing positioning ring in front of the lens! The aperture value on the ring starts from F2F5.6***4 and is marked with R (scene defocus) and F (foreground defocus) on the left and right sides of the ring respectively, indicating a special fixed-focus lens. Its main feature is that it is very valuable to obtain out-of-focus imaging points by allowing fuzzy control of the background or foreground of a specific object, and it can also help us control all parts of the photo according to the required performance, which is incomparable to similar lenses of its manufacturers. At present, Nikon has only two DC lenses: AF DC 105m. M f/2D, AFDC 135mm f/2ded: ultra-low dispersion ultra-low dispersion lens.

The finger support lens contains ed lens, which minimizes the chromatic aberration of the lens, thus ensuring the excellent optical performance of the lens. Representative lens: 80-200mm f/2.8D ED AF zoom-Nicole.

G-lens and D-lens have the same aperture-free ring design. Aperture adjustment must be completed by the fuselage. At the same time, it supports the design of 3D matrix photometric proofs, which reduces the lens weight and production cost. This lens is fully compatible with F5, F 100, F80, F65, F60, F55, F40 1, PRONEA, D 1 body. F90X, F70, F80 1 and F-60 1 can only use the program exposure mode and shutter priority exposure mode to be compatible with the rest of the fuselage. G-type nikkor lens is easier to operate in theory, and there is no misoperation, because there is no need to manually set a small aperture plastic AF lens to continue. For some photographers who set the lens almost manually, Nikon now has a promotion trend of G-head to represent the lens: 28-80mm f/ 3.3-5.6g af zoom -nikkorif: Internal focus Internal focus technology The so-called internal focus means that when the lens is in focus, the front lens group moves and the focusing lens group floats to complete the focus. When focusing, the lens length remains the same. IF technology uses fast and quiet focusing to represent the lens: 85mm f/ 1.4D IF AF NikkorIX lens 1996. Pronea, a cheap NikonAPS camera, has the same characteristics as plastic AF-D lens and can adapt to non-APS body. Reducing the space reserved for mirrors means that similar lenses are used in 35mm cameras, and the image field is too small to cover 35mm film. APS cameras use standard autofocus lenses. Macro: Macro lens refers to a macro lens with only one lens or a representative lens with macro shooting function: 105mm f/2.8d AF Macro Nicole.

N: Some examples of the new Nikon's improved lens logo are the famous AF 80-200/2.8ED (N).

Not applicable: full-time manual focusing

Such as canon FTM

P lens: built-in CPU lens

The focus motor is built into the fuselage to adapt to the ever-changing strategy. This strategy can make Nikon's new fuselage unable to use the telescope effectively. 1998 Nikon released the manual focus telephoto lens with built-in CPU (P). Meet the advanced automatic exposure function of AF fuselage, thus partially solving the problem. Although P lens looks like AI-S lens, some lenses have the electronic components and most efficiency of AF lens. At present, there are only three kinds of P lenses: 500/4 IF-ED,1200-1700/5.6-8 IF-ED and 45/2.8PC-Shift.

Moving lens to adjust optical axis perspective lens is mostly used in architectural photography.

Radio frequency focusing technology: back focusing group

The focusing of the same RF lens seems to be completed by the rear lens group. Because the rear lens group is smaller and easier to drive, the fast focusing speed is ensured, and the lens length change RF is also helpful to improve the imaging quality. Representative lens: 85mm f/ 1.8D AF Nikkor.

S: Slim thin Nikon has some thin lens logo examples AIS 50/ 1.8 SSIC: super integrated coating super composite coating.

TC: remote converter rangefinder

VR: electronic damping system for vibration reduction

Nikon anti-shake lens code is used to increase the stability of the picture when holding a low-speed shutter. The geometry of VR is F5, F 100, F80, F65, D 1 and D 100. The rest of the fuselage uses lenses to support VR function. Representative lens: 80-400 mm f/4.5-5.6ED VR AF zoom-Nicole.

What do you mean by manual in the camera? Mainly refers to manual focusing, setting aperture and shutter.

For example, Nikon camera uses manual lens, which requires manual setting of aperture, shutter and manual focusing. (The models above D200 can measure light, and the models below D80 do not support manual pan/tilt measurement. )

What do if and ed in Nikon lens mean? AF-S: ultrasonic focusing technology

AF-I: early lens autofocus technology

Three-dimensional matrix photometry technology

ED: ultra-low dispersion lens

Virtual Reality: Image Stabilization Technology

G: There is no aperture adjusting ring.

D: It has the function of transmitting distance to the fuselage.

IF: internal focusing technology

DC: defocused image control function

DX: Digital Dedicated