Although PC lenses do not work with autofocus, the focus points and focus lock confirmation in a digital SLR viewfinder can still come into use when working with one of these lenses. When focusing manually, simply select a focus point on your subject and use the focus lock LEDs in the camera viewfinder to confirm when your focusing or the lens tilt has brought this point of the subject into focus. When working with very shallow depth of field, this confirmation indicator can be most reassuring — a final check before pressing the shutter.
Tilt and shift lenses may seem like a more rarefied and expensive optic to have in your camera bag, but recent years have shown a diversification of their use from the original purpose of correcting converging verticals. Although built around optical principles that predate digital technologies by centuries, it is the onset of digital imaging that has extended their appeal.
The higher your viewpoint the better the resulting effect. On a PC lens it may be possible to alter the viewpoint sufficiently for the offending obstruction to move just beyond the edge of the viewfinder. Always fix your camera and lens onto a good quality tripod to ensure absolute steadiness when making your required tilt and shift adjustments. Both Nikon and Canon make specialist tilt and shift lenses.
These are fixed focal length, non-autofocus optics from wide-angle to short telephoto. Tilt and shift effects require a tripod, preferably one that is solid and rock steady. Fully extended shooting height is 1.
These cameras may seem like museum pieces, but they still have distinct advantages over digital SLRs for manipulating depth of field and perspective control. This was published in the March edition of Geographical magazine. Want to stay up to date with breaking Geographical stories? Join the thousands following us on Twitter, Facebook and Instagram and stay informed about the world. Marco Magrini explores the complex issue of carbon markets —…. The youth found marching outside the COP26 conference in Glasgow….
Will China's climate pledges be enough to achieve Xi Jinping's…. Net zero. James Wallace, chief executive of Beaver Trust, shares an unlikely…. The winners of the most hotly anticipated photography competition have…. Search Search How can you achieve perspective control in your images? In this article I will discuss the concept of perspective control and what it means in our photographs. To achieve In-camera Perspective Control you must have either a view camera or a tilt shift lens.
More information about the Cambo cameras can be found at the end of this article. Perspective control is the process of composing or editing of images to ensure that vertical parallel or near parallel lines remain parallel or near parallel. Typically however this might not result in the image we want. As shown in the image below:. Perspective distortion occurs when the sensor plane is not parallel to lines that are required to be parallel in the photo.
Most commonly this happens when the camera is tilted or pointed upwards—typically to include the top of a building or more sky or as in this case more of the tree-tops. They are tools that allow me to create pictures with ease that would be nearly impossible to create in any other way. They will always have a place in my camera bag, and they might deserve a place in yours too. The ability to control the lens plane separately from the image plane used to be found almost exclusively on view cameras or specialized medium-format cameras like the Fuji III.
But a surge of new perspective control lenses has brought view camera capabilities to DSLR cameras and the results speak for themselves. In architecture, for example, perspective control lenses allow me to place the camera in a perfectly level position while I simply raise, lower, or shift the lens separately from the camera to include what I want in the frame. When photographing products, cars, food, or anything that requires sharpness across the entire image, the perspective control lens allows adjustment to the depth of focus as well.
There are things you can do to change the perspective of an image. By moving around your camera, you can gain a better viewpoint than your usual eye level. It is easy to fall into the habit of photographing every scene from eye level. You notice something that catches your eye, and you want to capture the fleeting moment. Take a step left or right to find a better vantage point. Even moving one metre can have an immense effect on your image.
But the foreground does. The closer the foreground, the bigger the impact. You may find you are able to naturally frame that mountain with the trees. It could be the best or the photograph you have taken. At the very least, you have tried a different perspective and seen the impact it can have. This is even more important when photographing architecture.
If you made the trip to shoot something special, you need to make good use of your time. Walk around the structure and photograph it from different lateral positions. You may find that the idea changes with each movement. Change your position or the position of your camera. That way, you can find some interesting and new perspectives. Imagine you are photographing a street scene. You decide to get down to the perspective of a medium-sized dog. You will look at the world in a whole different way.
We all observe the street through the same eyes, day in and day out. But change your vertical position, and you have an interesting take on a mundane place or scene.
Trying a higher perspective gives you a different viewpoint of an object. If you are photographing a building from street-level, you only capture a small part of it. You can angle your camera up we discuss this in-depth in the next paragraph.
But that will give you perspective distortion. Try going across the street and getting up high. Then you can show the building from the side without the distortion. Changing your angle allows you to see and show the world from a different aspect. All the interesting building details are above the first floor.
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