A honeycomb grid is a lighting attachment designed to narrow the light from a flash or continuous lighting source into a tight beam. It gets its name from the hexagonal shape of the holes in the grid. Where other lighting attachments are designed to spread and soften the light, a honeycomb grid is design to […]
High-speed sync is a special flash mode that can overcome the limited flash synchronisation speeds of focal plane shutters.
Autofocus system that combines contrast autofocus and phase detection autofocus. It works using special phase-detection sensors built into the sensor. Contrast AF is typically slow but accurate, while phase detection AF is typically fast if potentially less accurate.
A way of adjusting the colours in an image – the Hue adjustment shifts the colour along a continuous spectrum, while the Saturation adjustment changes its intensity. For example, you can shift the hue of leaves away from yellow towards blue and increase their saturation to make the leaves look ‘fresher’.
Accessory shoe on the top of more advanced cameras that’s designed for sliding in an external flashgun, though these days it may also be used for electronic viewfinders, wireless remote control units and more.
Many programs can store a ‘history’ of all the editing changes you’ve made since you opened an image. Using this you can check what you’ve done and even backtrack to an earlier image state if you realise you’ve made a mistake. Some programs can store the history as part of the saved image file, while […]
A graphical display of the brightness values in the picture. The darkest tones are at the left and the brightest on the right, and the vertical bars show the number of pixels for each brightness value. Histograms are an invaluable exposure aid when taking pictures, and when editing them later.
When you shoot RAW files there is often a little extra highlight detail in the data than is initially visible, and a good RAW converter will be able to recover this detail to correct any ‘blown out’ areas. There’s no much margin for correction, however – typically you might be able to recover 1EV of […]
The lightest tones in a picture. It’s a pretty vague definition, but most photographers take it to mean tones which are at or near a full, featureless white. Retaining or recovering highlight detail – in bright skies, for example – is a big priority for keen photographers.
A photo where the tones are predominantly bright or white. It’s partly the subject that makes a photographer high key – a white cat on a white cushion, for example, and partly the exposure technique – slight overexposure will give a high key look.
More advanced type of compact camera which attempts to match the controls and features of a digital SLR or mirrorless camera but in a smaller body. High-end compacts have larger sensors than regular point-and-shoot models and better lenses with wider maximum apertures.
A process or set of tools for removing an object from a picture or repairing a blemish simply by painting over it. It’s like cloning, except that you don’t have to define a nearby clone ‘source’ to use for the repair – the healing tool chooses and matches pixels automatically.
All DSLRs or compact system cameras which shoot video will have an external microphone socket for better sound quality – but for pro videographers it’s just as important to have a headphone socket for monitoring sound levels while shooting. You only get this on more advanced models.
Software plug-in for creating HDR (high dynamic range) effects from single images or bracketing sets of exposures. It’s part of the Google Nik Collection. You can apply preset HDR styles with a single click or adjust and make your own effects using extensive manual controls.
HDR stands for high dynamic range photography. It combines a series of frames taken at different exposures to capture a much wider dynamic (brightness) range than the camera could capture with a single exposure. These exposures are merged using HDR software.
Standard digital interface for connecting video and display equipment. Cameras have HDMI ports for direct connection to TVs, for example, but more advanced models can also connect to external monitors for video recording, or external video recorders.
‘HD’ stands for ‘high definition’ to distinguish it from older, lower resolution video standards. HD actually comes in two formats: standard HD has a resolution of 1280 x 720 pixels, full HD is 1920 x 1080 pixels. Both use the same 16:9 aspect ratio.
Any photography – obviously – where you’re holding the camera with your hands rather than using a tripod or some other form of camera support. It has special implications for night and low light photography where it’s important to use shutter speeds fast enough to prevent camera shake.