Q:SLR camera lens 18-135mm and 18-200mm What is the difference?

The quality of the two lenses are different. In general, high-power focal length lens imaging quality will be almost. So in the picture quality 18-135 is better than the 18-200.

Q:Camera lens material problem

Resin is light, low cost, but the optical performance is not good, such as light transmittance, color difference, what difference is worse than the optical glass, but the problem is not used in the card machine, because the card itself is not good imaging, no need to use expensive The glass lens. Of course, the stress is generally glass. There is nothing in the camera parameters that relates to the lens material.

Q:SLR lens filter function and type

One, UV (UV) mirror: ????????The mirror can basically eliminate the impact of ultraviolet light and stray light on the film, while the protection of the role of the lens. Photography in the highlands is necessary. Second, the sky mirror: ????????Absorb ultraviolet light, all day apply. Outdoor photography can reduce the sunlight by the scattered light caused by the shadow part of the blue phenomenon, to maintain the natural color. Also used as a protective lens. Third, red mirror (R): ????????Absorb the blue light, can produce a romantic effect of the sky or daytime shooting similar to the effect of the moon, and have the function of absorbing ultraviolet light. Shooting generally need to increase the exposure of three, the specific requirements according to the requirements of the shooting and the depth of the filter to master. This mirror is generally used for black and white photos, can also be used for color photography.

Q:Do you want to give the camera when you come back?

See what you buy Some only sell bare metal with some hedging Generally speaking, the price is bare metal prices in fact the best not to hedge their own with a good match

Q:Camera lens on the 5.0-60MM1; 3.4-5.9 What does it mean

At the minimum focal length of 5.0 mm, the maximum aperture is 3.4; at the longest focal length of 60 mm, the maximum aperture is 5.9. In addition, because the focal length is changing, it also tells us that this is a zoom lens.

Q:SLR camera lens should always hang UV mirror or polarizer?

The two filters are functionally different from the one that is the underlying protective filter (UV mirror) and the other is a functional filter (such as a polarizer, a center mirror). The polarizer is gray and opaque ; Uv mirror is colorless and transparent; function that: uv mirror is the main function is to absorb the wavelength of 380 micro-millimeter of ultraviolet light, and the lens to play a protective effect such as dust and water.

Q:SLR camera lens all the features of the scene to choose the basic common sense

In the telephoto: 85-135MM, because of its small deformation, photographer and the subject to maintain a relatively relaxed distance, and soft shallow depth of field, is usually used as a portrait lens. Telephoto: 200MM or more, bird watching, stage, capture, sports focal lengths.

Q:How do I recognize the SLR camera with a telephoto lens and a short focus lens?

So when you distinguish, look at the lens of the focal length, you know is wide-angle lens, the standard lens or telephoto lens! For example, Canon 16-35, is a large wide angle - wide angle lens. 50F1.2 is the standard lens. The 70-200 is the standard - telephoto lens.

Q:What is a 135 single lens reflex digital camera?

2,35mm film specifications for the 24mm × 36mm, this specification is the most widely used traditional camera film specifications, so in the photography industry to form a tradition, that is, as a reference, as many times in the marked metric length The unit "m" is also converted to the English length unit "feet" and is noted later. We know that the focal length indicates the distance from the lens to the focal plane, that is, the distance from the lens to the film or the sensor. The precise definition of the focal length is "the distance from the focal point to the lens optical center". For digital cameras, the focal length is usually very small, which is due to the current digital camera commonly used image sensor specifications are very small - the diagonal length is usually not more than 25 mm, so the lens from the focal plane close, resulting in focal length Far less than the traditional 35mm camera is much smaller, the common 3x zoom optical lens is usually 6-18mm or 7-21mm or so. Coupled with different digital camera image sensor specifications are different, the lens marked on the real focal length of the number is also 7-21mm, in fact, converted to 35mm camera lens focal length is not the same. However, the real reason for marking the number of focal lengths with a 35mm camera is that most photographers can not understand why the lens focal length of a digital camera is so short that it can not understand the complex conversion relationship and convert the equivalent of 35mm camera lens focal length with this conversion relationship

Q:SLR camera lens Cha Cha's ring is how the matter

2. If the lens has an anti-shake function and is turned on. Canon lens image stabilization is IS image stabilization, Nikon is VR anti-shake. As long as the start of the anti-shake, half-press the shutter when the sound will appear sasa, which is inside the anti-shake at work (is to capture the shock).