What's the difference between a SLR camera and a mobile phone?

SLR cameras are professional photographic equipment, and mobile phones only have the function of taking pictures for our convenience, so there must be a difference between professional and non-professional. For example, just like the relationship between sprinters and sprinters, can the two be compared? Sprinters are not as fast as people even if they retire. But his starting, swinging and sprinting postures are all accurate. This is the difference between professional and non-professional. SLR cameras are all professional athletes. No matter how high the pixel of a mobile phone is, there is no way to compare it. We can compare it from several aspects.

Photosensitive element size

The size of the photosensitive element determines the number of pixels and imaging quality of the photo. Generally speaking, the larger the size of the photosensitive element, the more pixels it can accommodate, and the higher the final image quality. The following figure is a schematic diagram of a camera and a mobile phone:

Only the number marked is the size of the common mobile phone photosensitive element on the market. You can see how different it is.

2. Anti-shake of fuselage

When taking pictures, it is easy to shake the fingers because of the instability of the photographer's hands, which leads to the jitter of the picture. The lighter the camera equipment, the greater the influence of hand shake on its photography. The size and weight of SLR cameras are strictly designed, which can well cope with the picture jitter caused by hand shake.

3. Dynamic range

No matter how to improve the dynamic range of mobile phone photoreceptor, it can't achieve the effect comparable to SLR. The performance of photosensitive elements of standard SLR cameras is much better than that of mobile phones. Under the same shooting conditions, the shooting details are more and the dynamic range is wider.

4. Color range

The photosensitive element of a SLR camera is much larger than that of a mobile phone, and there are naturally many color receptors on the photoreceptor. Shooting the same flower, the bigger the photoreceptor, the more details you get, the better and more accurate the effect.

5. Photosensitive performance

Or a photoreceptor. As a miniature light receiver, mobile phone has very weak light gathering ability, so it is difficult to take pictures in dark light, and the photos are easy to blur. The picture below shows the shooting effect of the mobile phone:

6. Depth of field and virtual reality

Because the depth of field is determined by the distance between the objective lens and the photoreceptor, the focal length of the mobile phone is too short to shoot a beautiful small depth of field, that is, to shoot a good blur effect. But now this has been overcome by many mobile phones and software, so it can only be regarded as a small advantage.

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Single-lens reflex camera (abbreviated as SLR camera), also known as SLR camera (Chinese mainland, Hong Kong and Macao) or monocular camera (Taiwan Province Province), is a kind of camera design, which uses a mirror placed between the lens and film to project the image from the lens onto the focusing screen. Most single-lens reflex cameras observe the image reflected by the pentaprism through the eyepiece, but there are also other forms of viewfinders, such as overlooking viewfinders.

Since1970s, this technology has been widely used, and SLR cameras have become the new favorites of senior photographers and professional photographers.

The main advantage of a single-mirror reflex camera is that the photographer can directly observe the image passing through the lens from the viewfinder, which is called uniaxial reflection framing. Many modern single-lens reflex cameras provide auxiliary focusing devices, including ranging linkage and autofocus functions. In order to reduce weight, many modern single-lens reflex cameras use pentaprism instead of pentaprism.

The paraxial camera uses an additional reflection system to reflect the image to the viewfinder, so that the image obtained on the viewfinder is different from the image taken by the lens. This difference is not serious when the photographer is far away from the subject, but it is very obvious when shooting at close range or macro. However, SLR cameras avoid the parallax phenomenon in close-range and macro photography because framing and photography are the same optical path.

Most SLR cameras have the ability to change lenses quickly, which makes cameras more widely used. The same camera can be used for portrait, landscape, sports and macro shooting. Some early non-single-lens reflex cameras also have this ability.

Most SLR cameras use 35mm film. For most photographers and some professional applications, this film balances the factors such as photo quality, size and cost. Professional photographers who pay attention to the output quality of big pictures will use large-format SLR cameras.