How does choice sheet turn over camera lens? Above all the functional application that we should know to camera lens has what type and every kinds of scene, choose to suit oneself by different type classification next.
Can divide camera lens roughly from picture fixed position for APS picture scene, full frame, 4/3 picture, medium picture scene, this kind differentiates basically is to be aimed at the sheet of different picture to turn over camera to use. What also say we are used is the camera of what picture, the corresponding camera lens that chooses what picture with respect to need. The camera of different of course picture is OK mount is other of the camera lens of picture (should block buccal correspondence only) , the picture that just gets can have cut out, install full frame camera lens on the camera of APS picture for example, equivalent focal length is 1.5 times the left and right sides, what if film with 50mm camera lens,get actually namely is 75mm anxious paragraph. Use APS camera lens on full frame camera likewise, gotten picture should compare full frame camera lens narrow.
Focussing camera lens is anxious paragraph it is fixed immutable camera lens, for instance of 50mm, 85mm, 100mm focus camera lens, because focus camera lens machinery,construction wants relatively simple, so easier production gives the camera lens of bigger aperture, such we can use big aperture to get more takes smooth amount below darker environment, make sure the picture is normal exposure, at the same time big aperture also can get better setting theory turns the result. Theoretic the picture acutance that focuses camera lens to film and simple sense are close friends at scorch camera lens. This also is why mainstream film films what choose is to focus movie scene. The price that focuses camera lens of course also should compare alterable anxious camera lens a bit expensive.
And what scorch camera lens points to is alterable anxious paragraph camera lens, for instance beautiful can the camera lens of 16-35mm, 24-70mm, 70-200mm is scorch camera lens, the advantage of scorch camera lens depends on the result that push-pull camera lens can achieve below the circumstance of not mobile seat number, what place of scorch camera lens enclothes is anxious paragraph often grow quite, can satisfy us to be in already so of a few special setting film demand, also can avoid ordinary change camera lens. Of course if be acme most beg a picture to be mixed character big aperture, focussing camera lens is first selection undoubtedly.
From anxious paragraph differentiate camera lens can be divided again super- extensive role, extensive role, standard, long anxious, long shot, small be apart from wait for camera lens, different anxious paragraph the picture range that camera lens gets is distinct also. Exceed extensive role to also can call pearl eye camera lens, show 20mm is the following commonly anxious paragraph camera lens, the picture field of vision that exceeds wide-angle lens to film is very wide, clairvoyant the concern is strong, comfortable in harmony photographs the setting with building, scenery and great spectacle. But effect of depth of field is not apparent. And wide-angle lens and exceed extensive role very similar, those who point to is 20-35mm anxious paragraph camera lens, the visual concussion that wide-angle lens brings an appearance wants second with exceed wide-angle lens, clairvoyant relation is apparently a lot of more convergent also, suit to film a few great respect are mixed panoramic, of course wide-angle lens also suits to film in narrow space athletic camera lens, because clairvoyant relation is moved,feel can stronger.
Standard camera lens shows 40-60mm is anxious commonly paragraph camera lens, this kind of camera lens is close to the visual perception of person eye to suffer quite, filmed picture is relatively commonplace, visual impact is not strong, multi-purpose at filming figure is reached realistically picture. And in 85mm above anxious paragraph camera lens can say for telephoto lens, telephoto lens can pull the object of far close, create a vacuum compressed8 feeling, suit to film from far. Long shot camera lens is to show 200mm above is anxious paragraph camera lens, main good point sees namely far, multi-purpose will film the object of further place, film the moon reachs bird for instance. Small be apart from camera lens is a kind of more special camera lens, the construction that passes interior can magnify filmed object, build the visual perception of a kind of microcosmos, basically use at filming and so on of a few flowers, insect compares small object.
Constant what basically be aimed at with float aperture is alterable anxious camera lens, float aperture is to show scorch camera lens is when change focal length, aperture also can change as focal length, and constant aperture won't appear this kind of circumstance, constant aperture is to show camera lens is in all focal length paragraph can use its nominal the biggest aperture, namely aperture is changeless. Constant the production cost of aperture camera lens wants aperture of tower above float a lot of, general more professional camera lens is to use constant aperture, constant aperture camera lens also suits to film video is used quite.
Be opposite automatically anxious camera lens is the camera lens that points to to there are AF and MF switch on camera lens, AF moves switch when film, camera lens can identify a central issue automatically, and the hand moves pair of anxious camera lens to do not have this function, use pair of him Jiao Huan to anxious need the hand is moved undertake is opposite anxious.
Before be sure to keep in mind to be being bought or choose camera lens, the camera in wanting to understand your hand first is mouth of what shot clip, the camera lens of every manufacturer is right due and different card mouth, for example beautiful can F of EF card mouth, Ni Kang blocks an opening, if you chose to block a different scene with camera,installation does not go up, still have even if choose the camera lens that agrees with camera picture. Choose to focus camera lens or scorch camera lens according to utility next, be in again next what focus or oneself find to want in scorch camera lens is anxious paragraph, for instance extensive role, long anxious. See the aperture size of each Jiao Duanjing heads namely finally, those who choose to suit oneself is OK.
