Now the mobile phone at f2.0 large aperture, like Vivo Xplay 3S, millet 4, Lenovo K920 and other “old mobile phone” with a f1.8 aperture.
This made a lot of wrong thought buddy to stop getting seems very easy way, even doubt why now most SLR lens aperture is F2.8-F16?
This, although mobile phone and SLR aperture on the same name, but in fact they are completely different products. Here we simply say.
What is the aperture
Whether it is a mobile phone camera, or the camera lens, the aperture is used to control a lens light component.
The larger the aperture, the more light into the sensor through the lens. In simple terms the larger the aperture, the more light, the picture is bright; and small aperture, the screen will dark (if the shutter speed is constant).
The aperture size is expressed as the value of F (such as f1.0, f1.4, f2.0, f2.8, f4.0), the F value is greater, the aperture open more small, into the light will be less; the smaller the F is, the larger the aperture, the more light into the.
What is the role of large aperture?
Is a large aperture in the night camera has the advantage, because of the larger aperture means the same environment, the unit time to enter the light will be more photos will become more bright, but also has a faster shutter speed, the shutter and the faster the more conducive to the anti shake.
The two is the more shallow depth of field (bokeh), the relationship between aperture and depth is, the larger the aperture depth is small, the larger the aperture is small depth of field.
As a result, the large aperture benefits do more. So the question is: why not get the aperture SLR?
Mobile phone with SLR is not the same
First of all, also has a large aperture lens SLR, but more expensive, such as the Leica NOCTILUX-M 50mm f/0.95 APSH, a single lens is more than 8 yuan.
Secondly, do large aperture is really better than the SLR mobile phone is more difficult. Said little professional point, mobile phone camera and SLR lens is not the same, the photosensitive element mobile phone is very small, SLR is great.
Because of the structure, lens coating glass, mobile phone camera and SLR Lens are different, SLR is the zoom lens, is to correct different focal lengths, so use a high refractive index glass more, and aspheric lens.
But this is the consequences of the lens aberration more, more, so as to reduce the need to stop, the lens stray light scattering.
In short, deep, high sense of SLR view, zoom capability is not better than the mobile phone. So don’t take mobile phone camera and SLR Lens compared, although a small number of functions than the SLR, but not blind self-confidence, to challenge the SLR shooting, it will be hit even SLR mother can’t recognize.