As the name suggests, this is a lens particular suited to portraiture by virtue of its focal length and a fast maximum aperture. In portrait photography, you get better facial perspective if you stand back a little from the subject. This means you need to use a slightly longer focal length than usual to fill […]
This is a key part of the optical viewfinder system of a digital SLR. It’s a five-sided prism inside a housing on top of the camera that reflects the image captured by the lens and formed on the camera’s focusing screen so that it’s the right way up and the right way round for viewing […]
Perspective control lenses have special tilt and shift movements for correcting converging lines (shift movement) in architectural images, for example, and adjusting the plane of sharp focus (tilt movements) for objects at an angle to the camera. By applying a vertical shift you can bring the top of a tall building into the frame without […]
A made-up word to describe somebody mid-way between an amateur photographer (consumer) and professional (prosumer). A ‘prosumer’ has typically gone beyond snapshot photography has become interested in photography as a hobby or ultimately a profession, and has a certain amount of technical knowledge.
A lens with a fixed focal length, as opposed to a zoom lens. Prime lenses are more restrictive, but they tend to produce better optical quality with fewer aberrations and offer a wider maximum aperture. They also tend to be lighter and smaller, and many photographers find that having to change position to get the […]
An override option in program AE mode which shifts the shutter speed and aperture combinations in favour of faster shutter speeds or smaller apertures. This is often quicker than swapping to aperture-priority or shutter-priority mode if it’s for a single picture.
In this mode, the camera chooses combinations of shutter speed and lens aperture automatically to give a good compromise between safe shutter speeds (no camera shake) and reasonable depth of field (smaller apertures).
Printers don’t always produce accurate colours, particularly when using third-party papers or inks. A printer calibration kit will measure the colours produced by the printer and then create a software printer profile which adjusts the colour data sent to the printer.
A special noise reduction tool in DxO Optics Pro which uses extremely sophisticated noise reduction analysis and processing to achieve much better results than normal noise reduction. It’s very processor-intensive, though, so you can only preview the effect on small areas of the image at a time, and processing the full image can take a […]
Specific adjustment settings, or groups of settings, saved for re-use. Presets are used widely by image-editing and effects software to apply a sophisticated set of adjustments to a photo with a single click.
Here, the camera tracks subject in continuous autofocus mode and uses its movement within the frame and any changes in its distance from the camera to work where it’s going to be at the moment the shutter fires.
The brand name for Canon’s more advanced compact digital cameras. They include long-zoom compacts, bridge cameras and Canon’s more sophisticated high-end compact cameras, which feature extensive manual controls and larger sensors.
Normally, if you apply a vignette effect to a photo and then crop the photo you will crop off some of that vignette effect at the edges, too. However, Lightroom’s ‘post-crop’ vignette will re-apply the vignette settings after the image is cropped so that you don’t lose the effect. MacPhun’s Luminar has a Vignette filter […]
Most cameras have a built-in flashgun which pops up automatically in low light or can be popped up by pressing a button. The flash can provide emergency light, but it’s harsh and short range. In many instances it’s best to leave the flash off and use higher ISO settings.
Polarising filters darken blue skies and can cut through reflections and glare in water, glass and polished surfaces. They come in two types: linear polarisers are cheaper and older and don’t work well with modern autofocus systems; circular polarisers are more expensive but they are the type needed for modern cameras.
It’s about the easiest way of describing simple digital cameras that are inexpensive and designed for novices. They offer fully-automatic shooting modes that don’t require any particular photographic know-how and zoom lenses which cover most everyday needs. They quality is only average, though, and there’s little scope for overriding the camera.
A software tool designed not to be used on its own, but as an add-on to programs like Photoshop and Lightroom. Plug-ins typically offer specialised tools and effects not usually found in regular image editing programs.
A generic term for tools or modes which show where pictures were taken. Smartphones will tag any photos you take with them with the current location automatically. Very few cameras have the GPS hardware necessary to do this, but it is possible to add the location information later by dragging photos on to a map […]
Low-cost image-editor for Mac and iOS which has a clean and simple interface but powerful editing, retouching, selection and layering tools and a range of customisable effects. It also has painting tools and vector drawing tools, making it equally suitable for art projects, illustrations and diagrams.
This is where straight lines near the edge of the picture appear to bow inwards. It’s not as common as barrel distortion, but you do see it quite a lot with telephoto zoom lenses when the lens is set to its maximum focal length. You may not notice it with many types of subject, but […]