The difference between a DSLR camera and a telephoto camera

The "appearance" of SLR cameras and telephoto cameras is almost the same, and the difference between them is not just whether they can change the lens as mentioned upstairs, but their framing and imaging principles are completely different.

The SLR is framed with an optical viewfinder, and the photosensitive original is like film, and it is only sensitive when the shutter is pressed, so it cannot be framed with the LCD screen, nor can it be photographed**. (Of course, with the development of science and technology, a single-lens reflex that can be framed with an LCD screen has been developed).

First, the reference is different.

1. SLR camera: A DSLR camera is a camera that records imaging digitally. It belongs to the digital still camera (digital

StillCamera, DSC) and single-lens reflex cameras (SLR).

2. Telephoto camera: A digital camera with a telephoto lens.

Second, the characteristics are different.

1. SLR camera: In the working system of the SLR digital camera, after the light passes through the lens to the reflector, it is refracted to the upper focusing screen and formed an image.

2. Telephoto camera: the focal length is changed by the movement of the lens inside the lens. When shooting distant objects or when the subject does not want to be disturbed, the benefits of telephoto come into play.

In addition, the longer the focal length, the shallower the depth of field, the same effect as the larger the aperture, the shallower depth of field, the advantage of shallow depth of field is to highlight the subject and blur the background.

Third, the principle is different.

1. SLR camera: positioned in the high-end product of digital camera, so in the area of the image sensor (CCD or CMOS) related to the photographic quality of the digital camera, the area of the SLR digital is much larger than that of the ordinary digital camera, which makes the photosensitive area of each pixel of the SLR digital camera far larger than that of the ordinary digital camera.

2. Telephoto camera: The larger the zoom range, the worse the quality of the lens. Two of the most common problems encountered with 10x ultra-large zoom lenses are lens distortion and chromatic aberration. Purple fringing is more severe, and ultra-large zoom lenses are prone to barrel distortion at the wide-angle end.

Hehe, let's not talk about the difference.

Let's talk about your D5000 first, what you bought is just an 18-55 sleeve, and the focal length is very limited. The great advantage of being a DSLR is that the lens can be changed. So if you don't think the focal length is enough, buy another telephoto lens, such as a 70-300 one.

If the original head is too expensive, buy the head of the auxiliary factory, such as Tenglong's 70-300 with anti-shake and macro, which is more than 1,000 yuan.

You can use a 70-300mm lens to bring distant objects closer.

So your model is right for you, but you need to buy another telephoto lens.

Let's talk about telephoto cameras, the so-called telephoto cameras generally refer to ordinary consumer models and models with long focal lengths. For example, Fujifilm S8100 has a converted 35mm equivalent focal length of 27-486mm. The maximum focal length is 486mm, which is definitely a bit farther than your 18-55mm.

But after you buy a 70-300 telephoto lens, your focal length can be converted according to the ratio of multiples, which can reach 105-450mm, so that it can basically be comparable to him. And you are using a DSLR, its CCD is relatively large, and the imaging quality is definitely much better than that of the S8100.

In the auxiliary factory, Sigma and Tenglong have suitable heads. The dragon's is a little more expensive, and it is only one or two hundred short. Besides, more than a thousand people are basically poor people, and only those who are in the first position can make a good living, but ** has gone up.

The two most important features of SLR cameras are that the sensor area is very large, at least more than ten times that of digital cameras, which ensures high image quality, and the other is that the lens can be replaced, and different lenses can be used according to different shooting needs.

Telephoto digital camera is a kind of camera positioned in the low-end camera, optical zoom is more than 7 times, even if the sensor area is very small, so the image quality is not too high, and the lens can not be changed, the cost of the digital camera restricts the impossibility of using high-quality lenses, the general telephoto end image quality will be very bad, the advantage is that it can bring the distant scenery closer to the shooting, probably based on the concept of "shooting better than shooting well" The product was developed.

Telephoto digital cameras all use high-magnification optical zoom, generally more than 10 times, the focal length covers a large area, you can basically go all over the world in one shot, and the comprehensive manual shooting function can be more integrated into the effect you want when shooting, and the fun and space of shooting will be greater.

The biggest advantage of DSLR digital camera: because the size of the sensor is much larger than that of the telephoto camera, the final imaging effect is incomparable with the telephoto digital camera, depending on the shooting environment, the object, and so on, you can replace the corresponding lens to get a more perfect photo, high-speed shutter, high-speed continuous shooting and very small shutter time lag, you can capture and not miss the wonderful moment of high-speed moving objects, the practical high ISO, can bring the quality of photos taken under the bottom illumination is also of practical value, but the body**, In particular, lenses of various sizes** are expensive.

The telephoto simply refers to the length of the focal length, which can bring distant scenes closer. Both DSLR and non-SLR have telephoto, which are two concepts.

The DSLR can be replaced with different lenses to become wide-angle, medium-focus or telephoto cameras, and when you say telephoto camera, you should refer to consumer-grade telephoto cameras, internal sensors, focusing and image processing, which are far from DSLRs.

The DSLR is in terms of the camera itself (the way it is framed), and the telephoto is in terms of the lens (the focal length), and the object is different.

In fact, the biggest difference is in the image sensor, the photosensitive element of a DSLR camera is much larger than that of a telephoto camera.

Still on zoom.

The telephoto camera is the same as the zoom of the card, the lens is fixed, the body comes with a zoom lever, and there is also a digital zoom or something.

The zoom of the DSLR is all manual, and the focus can also be manual, and the flexibility is self-evident.

As for image quality, more expensive telephoto cameras can also use the image sensor of an entry-level SLR, and there are also eyepieces.

The lens can be replaced, and the choice is wider. Don't worry, you get what you pay for Japanese things, so let's buy what you can afford.