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depth of field to have the entire subject rendered acceptably sharp with a pc lens the camera back can be kept parallel to the subject while the lens is moved to achieve the desired positioning of the subject in the image area all points in the subject remain at the same distance from the camera and the subject shape is preserved if desired the camera back can be rotated away from parallel to the subject to allow some convergence of parallel lines or even to increase the convergence again the position of the subject in the image area is adjusted by moving the lens 8 adapters edit low cost tilt shift adapters are available however they can only be used with slr lenses on mirrorless cameras that have a short enough flange focal distance in order to provide infinity focus citation needed thus they are not available for all lens camera combinations the image circle of the lens must be larger than the sensor in the camera in order to avoid vignetting aperture control edit main article aperture control most slr cameras provide automatic aperture control which allows viewing and metering at the lens s maximum aperture stops the lens down to the working aperture during exposure and returns the lens to maximum aperture after exposure for perspective control and tilt shift lenses the mechanical linkage is impractical and automatic aperture control was not offered on the first such lenses many pc and ts lenses incorporated a feature known as a preset aperture which lets the photographer set the lens to working aperture and then quickly switch between working aperture and full aperture without looking at the aperture control though slightly easier than stopped down metering operation is less convenient than automatic operation when canon introduced its eos line of cameras in 1987 the ef lenses incorporated electromagnetic diaphragms eliminating the need for a mechanical linkage between the camera and the diaphragm because of this the canon ts e tilt shift lenses include automatic aperture control in 2008 nikon introduced its pc e perspective control lenses with electromagnetic diaphragms automatic aperture control is provided with the d300 d500 d600 610 d700 d750 d800 810 d3 d4 and d5 cameras with some earlier cameras the lenses offer preset aperture control by means of a pushbutton that controls the electromagnetic diaphragm with other earlier cameras no aperture control is provided and the lenses are not usable camera movements edit main article camera movements tilt edit nikon 24 mm lens which tilts as seen here and also shifts a camera lens can provide sharp focus on only a single plane without tilt the image plane containing the film or image sensor the lens plane and the plane of focus are parallel and are perpendicular to the lens axis objects in sharp focus are all at the same distance from the camera when the lens plane is tilted relative to the image plane the plane of focus pof is at an angle to the image plane and objects at different distances from the camera can all be sharply focused if they lie in the same plane with the lens tilted the image plane lens plane and pof intersect at a common line 9 10 this behavior has become known as the scheimpflug principle when focus is adjusted with a tilted lens the pof rotates about an axis at the intersection of the lens s front focal plane and a plane through the center of the lens parallel to the image plane the tilt determines the distance from the axis of rotation to the center of the lens and the focus determines the angle of the pof with the image plane in combination the tilt and focus determine the position of the pof the pof can also be oriented so that only a small part of it passes through the subject producing a very shallow region of sharpness and the effect is quite different from that obtained simply by using a large aperture with a regular camera using tilt changes the shape of the depth of field dof when the lens and image planes are parallel the dof extends between parallel planes on either side of the pof with tilt or swing the dof is wedge shaped with the apex of the wedge near the camera as shown in figure 5 in the scheimpflug principle article the dof is zero at the apex remains shallow at the edge of the lens s field of view and increases with distance from the camera for a given position of the pof the angle between the planes that define the near and far limits of dof i e the angular dof increases with lens f number for a given f number and angle of the pof the angular dof decreases with increasing tilt when it is desired to have an entire scene sharp as in landscape photography the best results are often achieved with a relatively small amount of tilt when the objective is selective focus a large amount of tilt can be used to give a very small angular dof however the tilt fixes the position of the pof rotation axis so if tilt is used to control the dof it may not be possible to also have the pof pass through all desired points view camera users usually distinguish between rotating the lens about a horizontal axis tilt and rotation about a vertical axis swing small and medium format camera users often refer to either rotation as tilt 1980 nikkor 35 mm lens that shifts shift edit san xavier del bac tucson arizona us if a subject plane is parallel to the image plane parallel lines in the subject remain parallel in the image if the image plane is not parallel to the subject as when pointing a camera up to photograph a tall building parallel lines converge and the result sometimes appears unnatural such as a building that appears to be leaning backwards shift is a displacement of the lens parallel to the image plane that allows adjusting the position of the subject in the image area without changing the camera angle in effect the camera can be aimed with the shift movement 11 shift can be used to keep the image plane and thus focus parallel to the subject it can be used to photograph a tall building while keeping the sides of the building parallel the lens can also be shifted in the opposite direction and the camera tilted up to accentuate the convergence for artistic effect shifting a lens allows different portions of the image circle to be cast onto the image plane similar to cropping an area along the edge of an image again view camera users usually distinguish between vertical movements rise and fall and lateral movements shift or cross while small and medium format users often refer to both types of movements as shift lens image circle edit whereas the image circle of a standard lens usually just covers the image frame a lens that provides tilt or shift must allow for displacement of the lens axis from the center of the image frame and consequently requires a larger image circle than a standard lens of the same focal length applying camera movements edit on a view camera the tilt and shift movements are inherent in the camera and many view cameras allow a considerable range of adjustment of both the lens and the camera back applying movements on a small or medium format camera usually requires a tilt shift lens or perspective control lens the former allows tilt shift or both the latter allows only shift with a tilt shift lens adjustments are available only for the lens and the range is usually more limited tilt shift and perspective control lenses are available for many slr cameras but most are far more expensive than comparable lenses without movements the lensbaby slr lens is a low cost alternative for providing tilt and swing for many slr cameras although the effect is somewhat different from that of the lenses just described because of the simple optical design there is significant curvature of field 12 and sharp focus is limited to a region near the lens axis consequently the lensbaby s primary application is selective focus and toy camera style photography selective focus edit bird s eye view of campos do jordão brazil selective focus can be used to direct the viewer s attention to a small part of the image while de emphasizing other parts with tilt the effect is different from that obtained by using a large f number without tilt with a regular camera the pof and the dof are perpendicular to the line of sight with tilt the pof can be almost parallel to the line of sight and the dof can be very narrow but extend to infinity thus parts of a scene at greatly different distances from the camera can be rendered sharp and selective focus can be given to different parts of a scene at the same distance from the camera 13 with tilt the depth of field is wedge shaped as noted above using a large amount of tilt and a small f number gives a small angular dof this can be useful if the objective is to provide selective focus to different objects at essentially the same distance from the camera but in many cases effective use of tilt for selective focus requires a careful choice of what is sharp as well as what is unsharp as vincent laforet has noted 14 because the tilt also affects the position of the pof it may not be possible to use a large amount of tilt and have the pof pass through all desired points this may not be a problem if only one point is to be sharp for example if it is desired to emphasize one building in a row of buildings the tilt and f number can be used to control the width of the sharp area and the focus used to determine which building is sharp but if it is desired to have two or more points sharp for example two people at different distances from the camera the pof must include both points and it usually is not possible to achieve this while also using the tilt to control dof selective focus using tilt appears in motion pictures such as minority report 2002 director of photography janusz kamiński says he prefers using tilt shift lenses to digital post production as too much digital can detract and it doesn t look organic 15 miniature faking edit main article miniature faking miniature simulation using digital post processing selective focus via tilt is often used to simulate a miniature scene 16 17 18 so much that tilt and shift effect has been used as a general term for some miniature faking techniques 19 basic digital post processing techniques can give results similar to those achieved with tilt and afford greater flexibility and control such as choosing the region that is sharp and the amount of blur for the unsharp regions 20 moreover these choices can be made after the photograph is taken one advanced technique smallgantics is used for motion pictures it was first seen in the 2006 thom yorke music video harrowdown hill directed by chel white 21 22 artist olivo barbieri is well known for his miniature faking skills in the 1990s 23 artist ben thomas s series cityshrinker extended this concept to miniature faking major cities around the world his book tiny tokyo the big city made mini chronicle books 2014 24 depicts tokyo in miniature applications edit in the left photo the camera has been leveled but no shift lens used the top of the house is not in shot in the center photo the same camera is tilted up to take in the whole house the building appears to lean backwards in the right photo a shift or pc lens gives the results wanted when making photographs of a building or other large structure from the ground perspective can be eliminated by keeping the film plane parallel to the building with ordinary lenses this results in capturing only the bottom part of the subject tilting the camera upwards results in a perspective effect that causes the top of the building to appear smaller than its base which is often considered undesirable the perspective effect is proportional to the lens s angle of view with a perspective control lens however the lens may be shifted upwards in relation to the image area placing more of the subject within the frame the ground level the camera s point of perspective is shifted towards the bottom of the frame another use of shifting is in taking pictures of a mirror by moving the camera off to one side of the mirror and shifting the lens in the opposite direction an image of the mirror can be captured without the reflection of the camera or photographer shifting can similarly be used to photograph around an object such as a building support in a gallery without producing an obviously oblique view perspective control in software edit main article perspective control computer software such as photoshop s perspective and distort functions can be used to control perspective effects in post production however this technique does not allow the recovery of lost resolution in the more distant areas of the subject or the recovery of lost depth of field due to the angle of the film sensor plane to the subject areas of the image enlarged by these digital techniques may suffer from the visual effects of pixel interpolation depending on the original image resolution degree of manipulation print display size and viewing distance the effect of using tilt or swing movements is less easily accomplished in post production if every part of the image is within the depth of field it is fairly easy to simulate the effect of shallow depth of field that could be achieved by using tilt or swing 19 however if the image has a finite depth of field post production cannot simulate the sharpness that could be achieved by using tilt or swing to maximize the region of sharpness see also edit brenizer method canon ts e 24mm lens lensbaby another type of movable lens nikon pc e nikkor 24mm f 3 5d ed tilted plane focus view camera a camera type that allows tilt and shift control references edit 1 2 sato haruo tale seventeen pc nikkor 28 mm f 4 nikon corporation archived from the original on 2008 08 28 retrieved 2008 07 10 1 2 ts 35 mm f 2 8 s s c canon camera museum camera lenses all nikkor lenses for digital slr cameras nikon en nikon ca canon tilt shift lenses canon central and north africa january 17 2024 archived from the original on january 17 2024 retrieved january 17 2024 laowa 15mm f 4 5 zero d shift laowa camera lenses 30 october 2020 fujifilm delivers gf 30mm and 110mm f5 6 tilt shift lenses for medium format dpreview 2023 09 12 retrieved 2024 05 29 ray 2000 p 171 ray 2000 p 172 stroebel leslie 1976 view camera technique 3rd ed london focal press p 28 isbn 978 0 240 50901 3 wilson andrew 1 may 2006 shift tilt lenses bring new perspectives vision systems design retrieved 2020 01 23 bond howard may june 1998 setting up the view camera photo techniques 41 45 a transcription is available on the large format page faq lensbaby is the lensbaby like a tilt shift lens stroebel 1976 interview vincent laforet canon usa inc retrieved 2010 04 06 kaminski janusz 2 april 2010 janusz kaminski on the diving bell and the butterfly moviemaker retrieved 2010 04 02 segal david 7 february 2007 can photographers be plagiarists slate retrieved 2007 02 07 rodrigues vailancio 16 november 2008 50 beautiful examples of tilt shift photography smashing magaz...